pasar pneumatic hydraulic · a a-2 hydraulic pumps hydraulic pump selection table pump type name...
TRANSCRIPT
qNachi Fujikoshi hydraulic pumps arefinished by high-grade, precisionmachining technology unique to thecomprehensive manufacturer NachiFujikoshi using carefully selectedmaterials and traditional heat treat-ment technology. High performanceand quality are assured with all mod-els of Nachi Fujikoshi hydraulicpumps.
wNoise has been thoroughly reducedon hydraulic pumps, a general sourceof noise on machinery and equip-ment. All models such as the low-noise type IP series can be operatedquietly with little noise.
eAttention has been paid to surfacetreatment and selection of materialsin NACHI hydraulic pumps so thatthey can be applied extensively withfire-resistant hydraulic operating fluid.
qLimit the eccentricity between thedrive shaft and hydraulic pump shaftto 0.05 mm, keep the angle errorwithin 1° and use flexible couplingsfor connections.
wWhen operating hydraulic pumps withbelts, gears and chains, prevent aradial or thrust load exceeding theallowable value from being applied onthe pump shaft. Also, if necessary,install a device that prevents a load(bending force) from being applied atright angles on the shaft. Mounthydraulic pumps so that the pumpshaft is horizontal.
eUse a rigid pump mounting base.rThe direction of rotation is determined
on each hydraulic pump. Operate the hydraulic pump in thecorrect direction of rotation afterchecking the indicated model No. onthe nameplate or the arrow indicatingthe direction of rotation on the body.The direction of rotation is clockwisewhen viewed from the shaft end.
tLimit the suction pressure to withinthe range -0.03 to +0.03 MPa -0.3 to+0.3 kgf/cm2.
yWith external drain type hydraulicpumps, directly connect the drain tothe tank, insert the drain pipe underthe oil level, and limit the drain backpressure to 0.03 MPa 0.3 kgf/cm2.
uWhen connecting steel pipes to thesuction and discharge sides, preventforce pressure from being applied onthe hydraulic pump by the piping.
iSet the clamping length of couplingsand hydraulic pump shafts so that it iswithin at least 2/3 or more of the cou-pling width. Also, use a size of cou-pling that matches the shaft diameter.
oWhen inserting couplings into shafts,insert them gently. When removingcouplings from shafts, be sure to usea pulley extractor. Avoid hitting theshaft when attaching or removingcouplings.
!0Connect to the suction port above thehorizontal to keep oil inside hydraulicpumps.
!1Provide an air bleed valve in circuitswhere it is difficult to release air atstartup.
!2Be sure to use only specified bolts onhydraulic pumps. Use 12T or equiva-lent.
Uni-pumps are compact pump/motorunits which have a motor directly cou-pled to the hydraulic pump. Variable dis-charge volume type vane pumps andpiston pumps are available. As each ofthese pumps are ideally integrated withthe motor, they can be easily installed,and more compact equipment configu-rations can be achieved economically. ¡Standard motor:
totally-enclosed splashproofhousing surface flange cooledself-actuating type (totallyenclosed fan-cooled type)3.7 kW to 4P or less: Class Einsulation5.5 kW to 4P or more: Class BinsulationVoltage 200V…50/60 Hz
220V…60 Hz
qUse mineral oil-based hydraulic oper-ating fluid.
wProvide a suction filter of about 100 to150 mesh on the suction port.
eWhen operating hydraulic pumps at ahigh pressure or when using fire-resistant hydraulic operating fluid, oilcontamination greatly affect pumpservice life. So, use a filter of 25µm orless.
rConsult your agent when using fire-resistant hydraulic operating fluid. When using water- or glycol-basedhydraulic operating fluid, refer to pageN-3 for details on applicable models ofhydraulic pumps.
tFor details on the viscosity ofhydraulic operating fluid, refer to theseparate item "Hydraulic OperatingFluid."
The following describes the meanings ofthe following terms used in this catalog:¡Rated pressure:
The maximum pressure atwhich a hydraulic pump can beused continuously.
¡Maximum operating pressure:The maximum pressure (includ-ing surge pressure) at which ahydraulic pump can be usedwithin six seconds at most with-in 1/10 of the cycle time.
¡Allowable peak pressure:The maximum pressure (setpressure + surge pressure) thatcan be momentarily allowed
¡The following shows the standards inLists of Sealing Parts:JIS standard B2401 (O-ring)JIS standard B2407 (backup ring)SAE standard AS568 (O-ring)
¡Pipe apertures mentioned in this cata-log that are indicated as "G*/*" com-ply with JIS B2351 O-ring seal sys-tems. Note, however, that G3/4adopts dimensions before JIS revi-sions were made in 1990. NachiFujikoshi adopts P24 as the O-ringsize whereas P22.4 is stated in cur-rent JIS standards.
1.Pump discharge flow rate
Qp= (r/min)
q=discharge volume per rotation(cm3/rev)
N=revolution speed(min-1)ηv=volume efficiency
2.Power required for pump drive
WP1= (kW)
= (PS)
P=discharge pressure(MPa)η=overall efficiency
3.Motor revolution spee
N= ·(1–S)(min-1)
f=frequency(50Hz, 60Hz)P=number of motor polesS=slip rate
120·fP
P·Qp44η
P·Qp60η
q·N·ηv1000
Features
Uni-pumps
Management of HydraulicOperating Fluid
Calculation FormulaRequired when Selecting
Hydraulic Pumps andMotor
Installation andMaintenance
A
A-1
Terms Used in This Catalog
NA
CH
I Hyd
raulic P
um
ps
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Hyd
raulic P
um
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Hydraulic Pump Selection Table
Pump Type Name
Type Classifi-cation
RatedPressure
MPakgf/cm2
Displacement cm3/rev
Page
Var
iabl
e pi
ston
pum
psV
aria
ble
disc
harg
e vo
lum
e va
ne p
umps
Inte
rnal
gea
r pu
mp
PVS series variable piston pump PVS
21214
Uni-pump UPV21
214
PZS series variable piston pump
PZS21
214
PZ load-sensitive variable piston pump PZ
21214
PZH series high-pressure variable piston pump
PZH35
357
VDS series compact variable vane pump VDS
771.4
Uni-pump USV7
71.4
VDR13 design series variable vane pump VDR
661.2
Uni-pump UVD6
61.2
VDR22 design series variable vane pump VDR
14143
Uni-pump UVD7
71.4
VDC series high-pressure variable vane pump VDC
14143
Uni-pump
UVN series variable vane uni-pump UVN
881.6
UVC7
71.4
A-3
A-19
A-22
A-35
A-42
B-1
B-4
B-6
B-12
B-15
B-22
B-25
B-37
B-39
C-1
C-14
IPH series IP pump IPH25
255
IPH series double IP pump IPH21
214
1 2 5 10 20 50 100 200 500 1000 2000 5000
3
3
45
45
42 220
2208
28 40
3 8.3
3 8.3
4
4
27.8
27.8
5 44.4
33.35
5
5
88.9
16.1
33.3
3.6 125.9
7.2 251.8
8.1
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Pisto
n P
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A
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PVS SERIESVARIABLE VOLUME PISTON PUMP
0
M
*
*
Dischargeport
Suctionport
Drainport
PVS Series VariableVolume Piston Pumps
8.0 to 45.0cm3/rev21MPa
Features
Design No. 30 is applied on PVS-0B to make the pump more compact and lighter, and reduce noise.Production of PVS-3B has been discontinued. Use PZS-3B.Pressure adjustment 3 type has been added to PVS-1B-22 and PVS-2B-45. (Design No. 20 is applied onlyon PVS-2B-45*3.)
Specifications
Energy-saving Type withDrastically Reduced Loss
A NACHI-proprietary semi-circular bar-rel swash plate that receives pressureon its surface ensures a stable dis-charge volume at all times. This elimi-nates excess
discharge volume, and enables theeffective use of power corresponding tothe load cycle.
This "energy-saving type" conservesenergy, reduces power loss, and helpsto reduce hydraulic costs.
Silent Type That DemonstratesIts Power Quietly
Proprietary low-noise mechanisms areincorporated on the shoe, swash plate,valve plate, and other locations toensure silent operation. In particular, asemi-circular barrel swash plate stabi-lizes operation characteristics to ensuresilent operation.
¡Handling¡Cautions during Pump Installation
and PipingzUse flexible couplings for connecting the
pump shaft to the drive shaft, and pre-vent a radial or thrust load from beingapplied on the pump shaft.
xFor centering of the pump shaft, limit theeccentricity between the drive shaft andhydraulic pump shaft to 0.05 mm, andkeep the angle error within 1°.
cSet the clamping length of couplings andhydraulic pump shafts so that it is withinat least 2/3 or more of the couplingwidth.
vUse a sufficiently rigid pump mountingbase.
bSet the pressure on the pump suctionside to -0.03 MPa or more (suction portflow velocity within 2 m/sec).
nRaise part of the drain piping to abovethe topmost part of the pump body, and
insert the return section of the drain pip-ing into the hydraulic operating fluid.Also, observe the values in the followingtable to limit the drain back pressure to0.1 MPa.
¡Management of Hydraulic OperatingFluid
zUse good-quality hydraulic operatingfluid, and use within a kinematic viscosi-ty range of 20 to 200 mm2/sec duringoperation. Use an R&O type and anti-wear hydraulic fluid of ISO-VG32 to 68.The optimum kinematic viscosity duringoperation is 20 to 50 mm2/sec.
xThe operating temperature range is 5 to60°C. When the oil temperature at start-up is 5°C or less, warm up the hydraulicpump by low-pressure, low-operationspeed operation until the oil temperaturereaches 5°C.
cProvide a suction strainer with a filteringgrade of about 100µm (150 mesh). Besure to provide a return line filter of grade20µm or less on the return line to the tank.(When the hydraulic pump is used at ahigh pressure of 14 MPa or more, we rec-ommend providing a filter of 10µm or less.
vManage the hydraulic operating fluid sothat contamination is maintained at classNAS10 or lower.
bUse hydraulic operating fluid within anoperating ambient temperature of 0 to60°C.
(continued on following page)
Model No.
ItemPVS-0BPVS-1B PVS-2B
Pipe joint size 3/8"or more
1/2"or more
Pipe I.D φ7.6 mm dia ormore
φ12 mmdia or more
Pipe length 1m or less 1m or less
Model No.Volume
cm3/rev
Discharge volume at no-load r/minPressure
adjustment range
MPa
kgf/cm2
Permittedpeak
pressureMPa
kgf/cm2
Rotating speed min-1 Mass
kg
1000min-1 1200min-1 1500min-1 1800min-1 Min. Max.
PVS-0B-8*0-30
1
2
3
8.0 8.0 9.6 12.0 14.4
2 to 13.5 20.4 to 35.7
2 to 17.5 20.4 to 71.4
3 to 14. 530.6 to 143
3 to 21. 530.6 to 214
25
255500 2000 7.7
PVS-1B-16*0-(*)-12
1
2
3
16.5 16.5 19.8 24.7 29.7
2 to 13.5 20.4 to 35.7
2 to 17. 520.4 to 71.4
3 to 14 .530.6 to 143
3 to 21. 530.6 to 214
25
255500 2000 10.5
PVS-1B-22*0--(*)-12
1
2
3
22.0 22.0 26.4 33.0 39.6
2 to 13.5 20.4 to 35.7
2 to 17. 520.4 to 71.4
3 to 14. 530.6 to 143
3 to 21. 530.6 to 214
25
255500 2000 10.5
PVS-2B-35*0--(*)-12
1
2
3
35.0 35.0 42.0 52.5 63.0
2 to 13.5 20.4 to 35.7
2 to 17. 520.4 to 71.4
3 to 14 .530.6 to 143
3 to 21. 30.6 to 214
25
255500 2000 21
PVS-2B-45*0--(*)-12
1
2
3--(*)-20
45.0 45.0 54.0 67.5 81.0
2 to 13.5 20.4 to 35.7
2 to 17. 520.4 to 71.4
3 to 14. 530.6 to 143
3 to 21 .530.6 to 214
25
255500 2000 21
Note) 1. The standard direction of rotation is clockwise when viewed from the shaft end. Consult your agent separately for a counterclockwise direction of rotation.2. A keyed straight shaft is standard. For details on spline shafts, consult your agent separately.
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¡Cautions at StartupzBefore you start pump operation, fill the
pump body with clean hydraulic operatingfluid via the lubrication port.
xAn unload is required when the motor isstarted under condition λ_3. Consultyour agent regarding the circuit.
cMake sure that the pump operates in thedirection of rotation the same as thatindicated by the arrow on the pumpbody.
vAir entering the pump or pipes maycause noise or vibration. At startup, setthe pump discharge side to a no-loadstate, and operate the pump in the inch-ing mode to release any air in the pumpor pipes.
bProvide an air bleed valve in circuitswhere it is difficult to release air at start-up. (See "IP Pumps" on page C-13.)
¡How to Set Pressure and DischargeVolumeThe default pump discharge volume isset to "maximum" and default dischargepressure is set to "minimum". Changethe discharge volume and dischargepressure settings according to your par-ticular operating conditions.
[Pressureadjustment]Turning the pres-sure adjustingscrew CW increas-es the pressure.
[Discharge volumeadjustment]Turning the flowrate adjusting screw CWdecreases thedischarge volume.
Note)· For details regarding the relationship betweenflow rate adjustment length rand pump capacityq, see the tables provided in the installationdimension drawings for each of the pumps.
· Firmly tighten the lock nuts after you have fin-ished adjustments.
[Note]¡Variable control mechanism
Standard typeN* : Pressure compensation type (manual
mode)Option type
P* : Pressure compensation type (remote
control mode)
N*Q* : 2-pressure, 2-flow rate control
R*A&* : Solenoid cutoff controlS
W*A&* : 2-pressure controlS
RQ*A&* : 2-pressure, 2-flow rateS
control w/ solenoid cutoff
C*A&* : 2-cutoff controlS
¡* : Pressure adjustment range0 : 2 to 3.5MPa 20.4 to 35.7kgf/cm21 : 2 to 7MPa 20.4 to 71.4kgf/cm22 : 3 to 14MPa 30.6 to 143kgf/cm23 : 3 to 21MPa 30.6 to 214kgf/cm2
¡&* : Applicable to solenoid specifications A, SA&* : SA-G01S&* : SS-G01
1 : 100V 50/60Hz2 : 200V 50/60Hz3 : DC12V4 : DC24V
122N16B1– – – –PVSDesign No. 30: PVS-0*
12: PVS-1*, PVS-2*20: PVS-2*-45N3 only
Pressure adjustment range [Note] Reference
Variable control mechanism [Note] Reference
Max. pump capacity (cm3/rev) Nominal 8, 16, 22, 35, 45
Mounting method B: Mounting flange type A: Mounting foot type
Pump size 0, 1, 2
PVS series variable piston pump
Auxiliary symbol None:Z:
Side port typeAxial port type(PVS-1*, PVS-2*)
*( )
Explanation of model No
Model No. Injection amount cm3
PVS-0B-8 220
PVS-1B-16, 22 300
PVS-2B-35, 45 650
NQ, RS, WS, RQS and CS types are not available for the PVS-0B-8, and the NQ, RQS and CS types are not available
for the PVS-1B-1622-Z and PVS-2B-35
45-Z.
CW
CCW
Pressureadjustment range
Dis
char
gevo
lum
eD
isch
arge
volu
me
Dis
char
ge v
olum
ead
just
men
t ran
ge
CW
CCW
Pressure
Pressure
N2:3-14MPaDis
char
ge v
olum
eD
isch
arge
vol
ume
Dis
char
ge v
olum
eD
isch
arge
vol
ume
Dis
char
ge v
olum
eD
isch
arge
vol
ume
Dis
char
ge v
olum
e
[Example 1]N*: Pressure compensation type (manual mode)PVS-1B-16N2
P2:3-14MPa[Example 2]P*: Pressure compensation type (remote control mode)PVS-1B-16P2
P2:3-14MPa
sol"ON"
sol"OFF"
[Example 4]R*S*: Solenoid cutoff controlPVS-1B-16R2S2Solenoid specifications200V 50/60HzSS-G01
W2:3-14MPa
sol"ON"
sol"OFF"
[Example 5]W*S*: 2-pressure controlPVS-1B-16W2S1Solenoid specifications100V 50/60HzSS-G01
N2:3-14MPa
Q1:2-7MPa
Discharge pressure
[Example 3]N*Q*: 2-pressure, 2-flow rate controlPVS-1B-16N2Q1
R2:3-14MPa
sol"ON"
sol"OFF"Discharge pressure
Discharge pressure
Discharge pressure
Discharge pressure
Discharge pressure
[Example 6]RQ*S*: 2-pressure, 2-flow rate control w/ solenoid cutoffPVS-1B-16RQ2S1Solenoid specifications100V 50/60HzSS-G01
C2:3-14MPa
sol"ON"
sol"OFF"Discharge pressure
[Example 7]C*S*: 2-cutoff controlPVS-1B-16C2S2Solenoid specifications200V 50/60HzSS-G01
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Variable Control MechanismsStandard type
Option type
Symbol External View Characteristics Hydraulic Circuit Explanation
N
NA
CH
I
Drain portPressureadjusting screwFlow rate
adjusting screw
Dis
char
ge v
olum
e
Discharge pressure
0
M
*
*
Dischargeport
Suctionport
Drainport
Pressure compensation type(manual system)
When the discharge pressurereaches the preset volumeset by the pressure compen-sator, the discharge volume isautomatically reduced to holdthe pressure at the set pres-sure.
P
NA
CH
I
Drain portFlow rateadjusting screw
Pilot port Differential pressureadjusting screw(adjustment forbidden)
Dis
char
ge v
olum
e
Discharge pressure
0
M*
*
PilotportDischargeport
Suctionport
Drainport
Pressure compensation type(remote control mode)
This mode demonstrates thesame characteristics as themanual mode.The discharge pressure canbe adjusted by external pilotpressure. The discharge vol-ume can be adjusted manual-ly. Note 2)
NQ
NA
CH
I
P1 pressure adjusting screw
q1 flow rate adjusting screwq2 flow rateadjusting screw
P2 pressureadjusting screwDrain port
q2
q1
P1
P2
Dis
char
ge v
olum
e
Discharge pressure
0
MN *
*
Discharge port
Suctionport
Drainport
2-pressure, 2-flow rate control typeThe discharge volumechanges in two stages by thepump's built- in sequencevalve. This allows convention-al high/ low pressure controlto be performed on a singlepump unit, and save energy inthe hydraulic circuit.
RS
(RA)
SOL b
NA
CH
I
Drain portPressureadjusting screw(at solenoid ON)
Flow rateadjusting screw
SOL"OFF"
SOL"ON"
Dis
char
ge v
olum
e
Discharge pressure
0
M*
*
Discharge port
Suctionport
Drainport
Solenoid cutoff control typeA solenoid valve for unload isintegrated into the pressurecompensation type to minimizeenergy loss when pump outputis not required. Only a slightamount of heat is generated.
WS
(WA)
NA
CH
I
Drain port
Pressureadjusting screw(at solenoid OFF)
Flow rateadjusting screw
Pressureadjusting screw(at solenoid ON)
SOL b
SOL"OFF"
P1 P2
SOL"ON"
Dis
char
ge v
olum
e
Discharge pressure
0M*
*
Discharge port
Suctionport
Drainport
2-pressure control typeTwo pressure compensationtypes can be obtained byswitching the solenoid valveON/OFF. Two types of outputcontrol are possible with theactuator set to a constantspeed.
RQS
(RQA)
SOL b
NA
CH
I
Drain port
P1 pressure adjusting screw
P2 pressureadjusting screw(at solenoid ON)
q1 flow rateadjusting screw
q2 flow rateadjusting screw
P2
q1
q2 P1
SOL OFF
SOL ON
Dis
char
ge v
olum
e
Discharge pressure
*
*0
MN
Discharge port
Suctionport
Drainport
2-pressure, 2-flow rate control typew/ solenoid cutoff
The discharge volume can bechanged in two stages by thesequencer valve and solenoidvalve for unload mounted onthe pump, and unloading ispossible when pressure oil isnot required.
CS
(CA)
NA
CH
I
Drain port
P2 pressure adjusting screw
q1 flow rate adjusting screwq2 flow rateadjusting screw
Differential pressureadjusting screw(adjustment forbidden)
q1
q2
P1 P2SOL OFF
SOL ON
Dis
char
ge v
olum
e
Discharge pressure
* *0
MN
Discharge port
Suctionport
Drainport
2-cutoff control typeTwo types of pressure - flowrate characteristics can beobtained by the solenoid valveand cylinder mounted on thepump.
Note 1) Many other variable control mechanism are also available in addition to those in the above table. Please consult your agent for details.Note 2) We recommend ZR-T02-*-5895* as the remote control valve. For details, consult your agent. Prevent the pipe volume up to the remote control
valve from falling below 150cm3.
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Manual mode: standard type
Typical characteristics at hydraulic operating fluid kinematic viscosity of 32 mm2/s
PVS-0B-8N*-30
List of Sealing Parts
Pressure Compensation Type
Installation Dimension Drawing
Cross-sectional Drawing
Performance Curves
Discharge portSuction port
G(Former PF)1/2G(Former PF)3/4
MINPressure compensator
Lubrication port
Drain portRc3/8
Lock nut
0–0.012
Discharge portG(Former PF)1/2
Lock nut
142
6
29
110130
R46
106.4
4911
47
78
53.2
132
77
3
11
164.5(MAX)
(flow rateadjustmentlength)18 6
19.0
521
.282
.6
149.5
14
127.5
49.5
525.4
214( MAX)
42.5
510
0 –0.0
210 –0.2
5
f–0
.036
–0.0
71
Flow rateadjusting screw
Pressureadjusting screw
Key width 4.76
Part No. Part Name Part No. Part Name Part No. Part Name
123456789
1011121314
BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSpring holderGasketSpring C
1516171819202122232425262728
Spring S Control pistonGuide pinParallel keyRetainerNeedleBall bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ring
29303132
33
34353637383940
Parallel pinSpring pinHexagon socket head boltCross-recessed countersunkhead screwHexagon socket setscrewHexagon nutHexagon plugMetal plugNameplateLubrication port plateCAUTION plateRivet
Parts marked by an asterisk "*" are not available on the market.Consult your agent.
10
10
8
6
4
2
3
5 15
PVS-0B-8N*-30
cm3 /
rev
Relationship between flow rateadjustmentlength ( ) and pump capacity (q)
Pum
p ca
paci
ty q
cm
3 /re
v
Flow rate adjustment range
Flow rate adjustment length mm
Discharge volume Q
Volume efficiency ηv
Overall efficiency η
Input Lin
1800min–1
1800min–1
1500min–1
1500min–1
14143
771.4
0
5060
15141312
6
4
2
0
708090
100
Discharge pressure P MPa kgf/cm2
General Performance
21214
Input Lin
Drain volume DR
Discharge volume Q1800min–1
1800min–1
1500min–1
1500min–1
14143
771.4
00
2
4
6
4
2
0
14
12
Discharge pressure P MPa kgf/cm2
Pressure - DischargeVolume Characteristics
21214
1800min–1
1500min–1 1500/1800min–1
1500min–1
14143
771.4
0
2.0
1.5
1.0
0.5
0
Full cutoff pressure MPa kgf/cm2
Axial Input at Full Cutoff
21214
14143
771.4
050
60
80
70
Discharge pressure P MPa kgf/cm2
At full cutoff
Measurement position: 1m rear of pump
Noise Characteristics
21214
Q=14.4r/minQ=12r/minQ=10r/minQ=8r/minQ=6r/min
14143
771.4
00
1
2
7
6
5
4
3
Discharge pressure P MPa kgf/cm2
Axial Input
21214
1800min–1
Effi
cien
cyη,
ηv%
Dis
char
ge v
olum
eQ
lite
r/m
inIn
put L
in k
W
Inpu
t Lin
kW
Dis
char
ge v
olum
eQ
lite
r/m
inD
rain
vol
ume
DR
lite
r/m
in
Axi
al In
put k
W
Axi
al in
put a
t ful
l cut
off k
W
Noi
se le
vel d
B(A
)Set a flow rate adjustment length withinthe above range. Oil will leak if the pumpis operated below the adjustment rangelower limit.
PartNo.
Part Name Q'tyPVS-0B-8
Size Remarks
13 Packing 1 PS46-100000 3 Bond
23 Oil seal 1 TCV-254511 N.O.K
27 O-ring 1 1B-P9 JIS B 2401
28 O-ring 1 1B-P11 JIS B 2401
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Installation Dimension Drawing
Cross-sectional Drawing
PVS-1B-16N*-(Z)-1222(side port type)
(axial port type)
Parts marked by an asterisk "*" are not available on the market.Consult your agent.
List of Sealing Parts
Part No. Part Name Part No. Part Name
123456789
101112131415161718192021
BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderGasketSpring CSpring SControl pistonNeedleKeyNutRetainerPlug
222324252627282930313233
3435363738394041
Ball bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringPinHexagon socket head boltCross-recessed coun-tersunk head screwHexagon socket set screwMetal plugNameplateCAUTION plateSpring holderLubrication port plateRivetGuide pin
Part No. Name Q'ty Size Remarks
13 Gasket 1 * Nihon Gasket
24 Oil seal 1 TCN-254511 N.O.K
28 O-ring 1 1B-G55 JIS B 2401
29 O-ring 1 1B-P9 JIS B 2401
30 O-ring 1 1B-P14 JIS B 2401
(MIN)
NA
CH
I
Drain portRc3/8
Key width4.76 0
–0.012
4-M10X16
24
Lubrication port
Discharge portSAEJ518b-3/4
Suction portSAEJ518b-1
525.4
12.5158
22±0.2
47.5
±0.2
649.577
181
5.5
236.5(MAX)
43
23
106.4
130
52
117388
42
124
8213
73
rFlow rateadjustment length
19.0
521
.282
.6
0–0
.021
0–0
.25
φ
φ
–0.0
36–0
.071
φ
Flow rateadjusting screw
Pressureadjusting screw
NA
CH
I
Rc3/8
4.76 0–0.012
4-M10X164-M10X16
SAE J518b-3/4SAE J518b-1
525.4
12.5
649.577
55
236.5(MAX)
42.5
23(MIN)
183 106.4130
52
1173
88
42
82
137
3
3030110
52.4
±0.2
47.5
±0.2
120 r
19.0
521
.2
82.6
0 –0.0
210 –0
.25
φ
φ
–0.0
36–0
.071
22±0.226.2±0.2
(suction port24 mm dia.)
(discharge port24 mm dia.)
Flow rateadjusting screw
Flow rateadjustment length Drain port Pressure
adjusting screw
Key width
Pressure compensator Lubrication port
5 10 15
10
20
Flow rate adjustment lengthr mm
PVS-1B-16N*-12
PVS-1B-22N*-12
0
30
20
16.5
22
7 5
Flow rate adjustment range
Flow rate adjustment range
Relationship between flow rate adjustmentlength (r) and pump capacity (q)
Pum
p ca
paci
ty q
cm
3 /rev
Set a flow rate adjustment lengthwithin the above range. Oil willleak if the pump is operatedbelow the adjustment range lowerlimit.
A_Piston(P01-15)_E.q 03.11.20 0:46 PM Page 7
A
A-8
Pisto
n P
um
ps
Performance Curves Typical characteristics at hydraulic operating fluid kinematic viscosity of 32 mm2/s
PVS-1B-16N*(Z)-12
Discharge volume Q Dischargevolume Q
Volume efficiency ηv
Overall efficiency η
Input Lin
1800min–1
1800min–1
1500min–1
1500min–1
14143
771.4
0
5040
60
3028262422
12
810
42
6
0
708090
100
Discharge pressure P MPa kgf/cm2
General Performance
21214
Input Lin
Drain volume DR
1800min–1
1800min–1
1500min–1
1500min–1
14143
771.4
00
2
4
12
8
4
0
2830
24
Discharge pressure P MPa kgf/cm2
Pressure - DischargeVolume Characteristics
21214
1800min–1
1500min–1
1800min–1
1500min–1
14143
771.4
0
2.0
1.5
1.0
0.5
0
Full cutoff pressure MPa kgf/cm2
Axial Input at Full Cutoff
21214
14143
771.4
0
60
80
70
Discharge pressure P MPa kgf/cm2
At full cutoff
Full cutoff pressureFull cutoff pressure
7MPa3.5MPa
Tank capacity 40
Measurement position: 1m rear of pump
Revolution speed 1800 min–1
Noise Characteristics
21214
Q=30r/min
Q=25r/min
Q=20r/min
Q=15r/min
Q=10r/min
14143
771.4
00
2
4
14
12
10
8
6
Discharge pressure P MPa kgf/cm2
Axial Input
21214
640 1 3 5 72
0
30
20
10
Time Hr
Oil Temperature Rise CharacteristicsPVS-1B-16N1-12
8
Full cutoff pressureFull cutoff pressure
7MPa3.5MPa
Tank capacity 60
Revolution speed 1800 min–1
640 1 3 5 72
0
30
20
10
Time Hr8
Effi
cien
cyη,
ηv%
Dis
char
ge v
olum
eQ
r/m
inIn
put L
in k
W
Inpu
t Lin
kW
Axi
al in
put k
W
Dra
in v
olum
eD
R r
/min
Dis
char
ge v
olum
eQ
r/m
in
Axi
al in
put a
t ful
l cut
off k
W
Noi
se le
vel d
B(A
)
Tem
pera
ture
diff
eren
ceTe
mpe
ratu
re d
iffer
ence
Performance Curves Typical characteristics at hydraulic oper-ating fluid kinematic viscosity of 32 mm2/s
PVS-1B-22N*-(Z)-12
0 7 14 0
4
8
12
1800min–1
1500min–1
Input Lin
6050
708090
100
40353025
21
1614
10
6
2
71.4 143 214Discharge pressure P MPa kgf/cm2
Overall efficiency η
1800min–1
1500min–1
General PerformanceDischargevolume Q
Dis
char
ge v
olum
eQ
lite
r/m
inIn
put L
in k
W
Effi
cien
cyη,
ηv%
Volume efficiency ηv
2170 14 0
4
8
12
Input Lin
1800min–1
1500min–1
14371.4
40
214
30
16
1800min–1
1500min–1
Pressure - Flow RateCharacteristics
0
2
4
Drain volume DR
Discharge pressure P MPa kgf/cm2
Dis
char
ge v
olum
eQ
lite
r/m
inD
rain
vol
ume
DR
lite
r/m
in
Discharge volume Q
Inpu
t Lin
kW
21
14
70 140
4
8
12
143
6
71.4 214
2
10
16Axial Input
Q=40
Q=35
Q=30
Q=25
Q=20
r/min
r/min
r/min
r/min
r/min
Discharge pressure P MPa kgf/cm2
Axi
al in
put k
W
7
1500min–11800min–1
2140
2.0
21140
143
0.5
1.0
1.5
Axial input at full cutoff kW
71.4Discharge pressure P MPa kgf/cm2
Axi
al in
put a
t ful
l cut
off k
W
14321
214
60
500
80
1800min–1
1500min–1
7 14
70
Noise Characteristics
71.4
Measurement position: 1m rear of pump
At full cutoff
Discharge pressure P MPa kgf/cm2
Noi
se le
vel d
B(A
)
A_Piston(P01-15)_E.q 03.11.20 0:46 PM Page 8
A
A-9
Pisto
n P
um
ps
Installation Dimension Drawing
PVS-2B-35N*-(Z)-1245
Cross-sectional Drawing
PVS-2B-35N*-(Z)-12(20)45(side port type)
(axial port type)
PVS-2B-45N3-(Z)-20
PartNo.
Part Name
123456789
101112131415
BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderGasketSpring CSpring S
PartNo.
Part Name
161718192021222324252627282930
Control pistonNeedleKeyNutRetainerPlugBall bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ring
PartNo.
Part Name
313233
34
35
3637383940414243
Backup ringPinHexagon sockethead boltCross-recessed coun-tersunk head screwFlow rate adjust-ing screwMetal plugNameplateCAUTION plateSpring holderGuideLubrication port plateOrificeRivet
List of Sealing Parts
PartNo.
Part Name
123456789
10111213141516
BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderGasketSpring CSpring SControl piston
PartNo.
Part Name
17181920212223242526272829303132
NeedleKeyNutRetainerPlugRoller bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringBackup ringPin
List of Sealing Parts
PartNo.
Part Name
33
34
35
363738394041424344454647
Hexagon sockethead boltCross-recessed coun-tersunk head screwFlow rate adjust-ing screwMetal plugNameplateCAUTION plateSpring holderGuideLubrication port plateOrificeRivetOrificePinO-ringPlug
Parts marked by an asterisk "*" are not available on the market. Consult your agent.
Parts marked by an asterisk "*" are not available on the market. Consult your agent.
NA
CH
I
Pressure adjusting screwLock nut
A Bcm3/rev
0 to 30 to 2
3
22.23 0–0.021
0–0.524.9
25.385 0–0.025
0–0.2527.85
12D
20D
35
45
Pressure compensator Lubrication port
Suction portDischarge port
101.
6
53338
60
6
19215
28
88317 (MAX)
222
69.5
60 MIN
A B
144146172
6513
345
104
172
r
Drain portRc1/2
Key width6.3+0.015
–0.010
4-M10X16
SAEJ518b-1 SAEJ518b-1 4
26.2±0.2
52.4
±0.2 0 –0
.051
1/
Flow rateadjustment length
Flow rateadjusting screw
PressureRange
DesignNo.
020
10
Flow rate adjustment lengthr mm
20
30
40
50
PVS-2B-35N*-12
PVS-2B-45N*-12(20)
45
35
11
8
25 30 35
Flow rate adjustment range
Flow rate adjustment range
Relationship between flow rate adjustmentlength (r) and pump capacity (q)
Pum
p ca
paci
ty q
cm
3 /re
v
NA
CH
I
Drain portLock nut
Key width
Pressure compensator Lubrication port
SAE J518b-1
4-M10X16
53438
6
15
88
69.5
220
6060(MIN)
146172
6513
45 310
417
2
128
52.4
±0.2
58.7
±0.2
30.2±0.2
37 37140
26.2±0.24-M10X16
SAE J518b-11/4
Rc1/2
257 (MAX)
r
6.3 +0.015–0.010
A Bcm3/rev
3
22.23 0–0.021
0–0.524.9
25.385 0–0.025
0–0.2527.85
12D
20D
35
45
101.
6
A B0 –0
.051
Pressureadjusting screw
Flow rateadjustment length
Flow rateadjusting screw
PressureRange
DesignNo.
(suction port28 mm dia.)
(discharge port28 mm dia.)
0 to 30 to 2
Part No. Part Name Q'tyPVS-2B-35/45
Size Remarks
13 Gasket 1 * Nihon Gasket
24 Oil seal 1 TCN-305011Z N.O.K
28 O-ring 1 1B-G70 JIS B 2401
29 O-ring 1 1B-P14 JIS B 2401
30 O-ring 1 1B-P11 JIS B 2401
31 Backup ring 1 T2-P11 JIS B 2407
Part No. Part Name Q'tyPVS-2B-45N3
Size Remarks
13 Gasket 1 * Nihon Gasket
24 Oil seal 1 TCN-305011Z N.O.K
28 O-ring 1 1B-G70 JIS B 2401
29 O-ring 1 1B-P14 JIS B 2401
30 O-ring 1 1B-P11 JIS B 2401
46 O-ring 2 1B-P5 JIS B 2401
31 Backup ring 1 T2-P11 JIS B 2407
Set a flow rate adjustment lengthwithin the above range. Oil will leakif the pump is operated below theadjustment range lower limit.
A_Piston(P01-15)_E.q 03.11.20 0:46 PM Page 9
A
A-10
Pisto
n P
um
ps
Discharge volume Q
Volume efficiency ηv
Overall efficiency η
Input Lin
1800min–1
1800min–1
1500min–1
1500min–1
14143
771.4
0
5060
65605550
30
20
10
0
708090
100
Discharge pressure P MPa kgf/cm2 Discharge pressure P MPa kgf/cm2
General Performance
21214
Input Lin
14143
771.4
00
2
4
30
20
10
0
70
60
50
21214
1800min–1
1500min–1
14143
771.4
0
4
3
2
1
0
Full cutoff pressure MPa kgf/cm2
Axial Input at Full Cutoff
21214
14143
771.4
00
4
8
28
24
20
16
12
Discharge pressure P MPa kgf/cm2
Axial Input
21214
Q=60r/min
Q=50r/min
Q=40r/min
Q=30r/min
Effi
cien
cyη,
ηv%
Dis
char
ge v
olum
eQ
r/m
inIn
put L
in k
W
Dischargevolume Q
Drain volumeDR
1800min–1
1800min–1
1500min–1
1500min–1
Pressure - DischargeVolume Characteristics
Inpu
t Lin
kW
Dra
in v
olum
eD
R r
/min
Dis
char
ge v
olum
eQ
r/m
in
Axi
al in
put k
W
Axi
al in
put a
t ful
l cut
off k
W
At full cutoff1500min–
11800min–1
14321
214
60
500
80
7 14
70
Noise Characteristics
71.4
Measurement position: 1m rear of pump
Discharge pressure P MPa kgf/cm2
Noi
se le
vel d
B(A
)
21214
5060
771.4
0 14143
0
10
20
30
Input Lin 1800min–1
1500min–1
708090
100
7580
7065
Overall efficiency η
Volume efficiency ηv
Dischargevolume Q
1500min–1
General Performance
1800min–1
Discharge pressure P MPa kgf/cm2
Effi
cien
cyη,
ηv%
Dis
char
ge v
olum
eQ
lite
r/m
inIn
put L
in k
W
70
7
4
214
2
0 2114
1800min–1
0
143
10
20
1500min–1
30
0
Pressure - DischargeVolume Characteristics
71.4
80
60
Discharge pressure P MPa kgf/cm2
Input Lin
Discharge volume Q
Drain volume DR
1800min–1
1500min–1
Inpu
t Lin
kW
Dra
in v
olum
eD
R li
ter/
min
Dis
char
ge v
olum
eQ
lite
r/m
in
21
28
70 140
8
16
24
Q=80r/minQ=70r/minQ=60r/min
Q=50r/min
Q=40r/min
143
12
71.4 214
4
20
32Axial Input
Discharge pressure P MPa kgf/cm2
Axi
al in
put k
W
14321
214
00
1800min–1
1500min–1
7 14
Axial Input at Full Cutoff
71.4
1
2
3
4
Full cutoff pressure MPa kgf/cm2
Axi
al in
put a
t ful
l cut
off k
W
At full cutoff1500min–11800min–1
14321
214
60
500
80
7 14
70
Noise Characteristics
71.4
Measurement position: 1m rear of pump
Discharge pressure P MPa kgf/cm2
Noi
se le
vel d
B(A
)
Performance Curves Typical characteristics at hydraulic operating fluid kinematic viscosity of 32 mm2/s
PVS-2B-35N*-(Z)-12
Performance Curves Typical characteristics at hydraulic operating fluid kinematic viscosity of 32 mm2/s
PVS-2B-45N*-(Z)-12(20)
A_Piston(P01-15)_E.q 03.11.20 0:46 PM Page 10
A
A-11
Pisto
n P
um
ps
Response Performance
Pressure Compensator
Model No.Response Time (s) Surge Pressure MPakgf/cm2
t1 t2 PS
PVS-0B-8 0.03 to 0.04 0.04 to 0.06 12 to 420.4 to 40.8
PVS-1B-16 0.05 to 0.06 0.07 to 0.08 14 to 740.8 to 71.4
PVS-1B-22 0.05 to 0.06 0.07 to 0.08 15 to 851 to 81.6
PVS-2B-35 0.05 to 0.06 0.05 to 0.07 16 to 961.2 to 91.8
PVS-2B-45 0.05 to 0.06 0.05 to 0.07 16 to 961.2 to 91.8
0
MM
Ps
14MPa
1MPa 1MPa
FC
SOL ONSOL OFFSOL OFF
MPa
Time s
(Q=0)
(Q=MAX)
Q
t1
t2
Test CircuitPiping volume 400 cm3
Pressure MPa
Lege
nd
Response performance changes according to pipe volume and size. Use an anti-surging valve to prevent surge voltage.
Note) O-ring 1A/B-** refers to JIS B2401-1A/B.
List of Sealing Parts
PartNo.
Name Q'tySize
For 0B, 1B, 2B
9 O-ring 1 1A-P14
10 O-ring 3 1B-P6
11 O-ring 1 1B-P10
Part No. Part Name Part No. Part Name
1234567
BodySpoolHolderPlungerSpringRetainerPressure adjusting bolt
891011121314
NutO-ringO-ringO-ringPlugPlugMounting bolt
A_Piston(P01-15)_E.q 03.11.20 0:46 PM Page 11
A
A-12
Pisto
n P
um
ps
Pressure Compensation Type (remote control mode)
PVS-0B-8P*-30
PVS-2B-35P*-12(20)45
PVS-1B-16P*-1222
Rc1/4
NA
CH
I
Rc3/8
4.76
4–M10x16
SAEJ518b-3/4 SAEJ518b-1
525.4
12.5158
22±0.2
47.5
±0.2
6
49.577
181
55
43
236(MAX)
106.4
130
52
1173
88
42
124
8213
7
360
r
24f
19.0
5
21.2
82.6
0 –0.2
5
0–0
.021
φ
φ–0
.036
–0.0
71
0–0.012
Flow rate adjust-ment lengthFlow rate adjust-ing screw
Pilot portDrain port
Key width
Differential pressure adjusting screw(adjustment forbidden)
Lubrication port
Discharge port Suction port
G(Former PF)3/2
G(Former PF)1/2
Rc3/8
4.760
–0.012
Rc1/4
142
77
29
110130
R46
106.4
4911
47
78
53.2
132
6
3
11
164.5(MAX)6
19.0
5
21.2
82.6
149.5127.5
49.5
525.4
214(MAX)
42.5
510
93.518
0 –0.2
5
0 –0.0
21φ
φ–0
.036
–0.0
71r
(flow rate adjust- ment length) Pilot port
Drain port
Lock nut
Flow rate adjusting screw Key width
Discharge port
Discharge portSuction port
Lubrication port
G(Former PF)1/2
Explanation of model No.:
Pressure adjustment range 0: 2- 3.5MPa 20.4- 35.7kgf/cm2 1: 2- 7MPa 20.4- 71.4kgf/cm2 2: 3-14MPa 30.6-143kgf/cm2 3: 3-21MPa 30.6-214kgf/cm2
P: Pressure compensation type (remote control mode)
Max. pump capacity (cm3/rev) Nominal 8, 16, 22, 35, 45
Pump size 0, 1, 2
Design No. 30: PVS-0* 12: PVS-1*, PVS-2* 20: PVS-2*-45P3 only
30P8B0– – –PVS *
SAEJ518b-11/4SAEJ518b-1
Rc1/4
NA
CH
I
Rc1/2
4–M10x16
6.3 +0.015–0.010
144146172
6513
45
104
172
3
101.
6
53338
606
1921526.2±0.2
52.4
±0.2
88
317(MAX)
222
69.5
r
28φ
A B0 –0
.051
φ
φ
φ
A Bcm3/rev
3
22.23 0–0.021
0–0.524.9
25.385 0–0.025
0–0.2527.85
12D
20D
35
45
Pilot port pp
Lock nut
Drain port
Flow rate adjusting screw
Differential pressure adjusting screw (adjustment forbidden)
Lubrication port
Discharge portSuction port
Pressure Range
Design No.
Flow rate adjustment length
Key width
0 to 30 to 2
P-Q Characteristics
Set by remotecontrol V
Max
. pum
p ca
paci
ty q
cm
3 /re
v
Discharge pressure P MPa
Installation Dimension Drawing
A_Piston(P01-15)_E.q 03.11.20 0:46 PM Page 12
A
A-13
Pisto
n P
um
ps
2-pressure, 2-flow Rate Control Type
PVS-1B-16N*Q*-1222
PVS-2B-35N*Q*-12(20)45
(MIN)
NA
CH
I
Rc3/8
4.76 0–0.012
4–M10x16
SAEJ518b-3/4 SAEJ518b-1
525.4
21.2
82.6
12.5158
22±0.2
47.5
±0.2
6
77
181
19.0
5
49.5
43
296(MAX)
23
106.4
130
521173
88
42
12482
137
3
107.5(MAX)
24φ
0–0
.25
–0.0
71–0
.036
0 –0.0
21φ
φ
Drain port P2 pressure adjusting screw
q1 flow rate adjusting screw
q2 flow rate adjusting screw
Key width
Pressure compensator Lubrication port
P1 pressure adjusting screw
Discharge port Suction port
NA
CH
I
Rc1/2
4–M10x16
6.3+0.015–0.010
SAEJ518b-11/4SAEJ518b-1
101.
6
53338
6
1921526.2±0.2
52.4
±0.2
88
222
352(MAX)
60
60(Min)
144146172
6513
45
107.5(MAX)
104
3
172
A B
0 –0.0
51φ
φ
φ
28φ
A Bcm3/rev
3
22.23 0–0.021
0–0.524.9
25.385 0–0.025
0–0.2527.85
12D
20D
35
45
Drain portP2 pressure adjusting screw
q1 flow rate adjusting screw
q2 flow rate adjusting screw
Key width
Pressure compensator Lubrication port
P1 pressure adjusting screw
Discharge portSuction port
Pressure Range
Design No.
0 to 30 to 2
NQ: 2-pressure, 2-flow rate control
Max. pump capacity (cm3/rev) Nominal 16, 22, 35, 45
Pump size 1, 2
Pressure adjustment range N*: High-pressure adjustment range, P2Q*: Low-pressure adjustment range, P10: 2- 3.5MPa 20.4- 35.7kgf/cm21: 2- 7MPa 20.4- 71.4kgf/cm22: 3-14MPa 30.6-143kgf/cm23: 3-21MPa 30.6-214kgf/cm2
123 1QN16B1– – –12: PVS-1*, PVS-2*20: PVS-2*-45N3Q*
Design No.
Explanation of model No.: PVS
Pump Model No. q2 Adjustment Range (cm3/rev) Default q2 (Setting cm3/rev)
PVS-1B-16 0 to 10 3.3
PVS-1B-22 0 to 13 4.4
PVS-2B-35 0 to 19 7
PVS-2B-45 0 to 24 9
Note 1) The setting range of maximum pump capacity q1 varies according to the setting ofq2.
Note 2) Overall efficiency at a low flow rate is worse than at the maximum flow rate. Pay atten-tion to this when selecting the motor capacity for the drive.
Installation Dimension Drawing
P1
q1
q2
0 P2
P1
q1
q2
0 P2
P-Q Characteristics
Discharge pressure P MPa
Pum
p ca
paci
ty q
cm
3 /re
v (N
ote
2)
P-Q Characteristics
Discharge pressure P MPa
Pum
p ca
paci
ty q
cm
3 /re
v (N
ote
2)
A_Piston(P01-15)_E.q 03.11.20 0:46 PM Page 13
A
A-14
Pisto
n P
um
ps
Solenoid Cutoff Control Type
PVS-1B-16R*A*-1222 S
PVS-2B-35R*A*-12(20)45 S
The coil surface temperature increases if this pump is kept continuously energized.Do not touch the surface of the coil directly with your hands.
SAEJ518b-3/4 SAEJ518b-1
SOL b
NA
CH
I
Rc3/8
4.76 0–0.012
4–M10x16106.4
130
52
11
124
82
137
3
108
215(
SS
-G01
)17
7(S
A-G
01)
42
525.4
21.2
82.6
12.5158
22±0.2
47.5
±0.2
677
181
55
19.0
5
43
47.449.5
199.8
24φ –0.0
36–0
.071
0 –0.2
5
φ
0–0
.021
Pressure adjusting screw (at solenoid ON)
Drain port
Flow rate adjusting screw
Key width
Lubrication port
Discharge port Suction port
Differential pressure adjusting screw (adjustment forbidden)
SAEJ518b-11/4
Rc1/4
NA
CH
I
SOL bRc1/2
144146172
6513
45
194.
5(S
A-G
01)
236(
SS
-G01
)
90.5 10
43
172
53338
606
1921526.2±0.2
52.4
±0.2
88
317(MAX)
222
69.5
SAEJ518b-1
101.
6
A B0 –0
.051
φ
6.3 +0.015–0.010
4–M10x16
28φ
A B
22.23 0–0.021
0–0.524.9
25.385 0–0.025
0–0.2527.85
12D
20D φ
φ
cm3/rev
3
35
45
Pressure Range
Design No.
Pressure adjusting screw (at solenoid ON)
Lock nut
Flow rate adjust-ing screw
Pilot port
Drain port
Differential pressure adjusting screw (adjustment forbidden)
Key width
Differential pressure adjusting screw (adjustment forbidden)
Lubrication port
Suction portDischarge port
0 to 30 to 2
Pressure adjustment range 0: 2- 3.5MPa 20.4- 35.7kgf/cm2 1: 2- 7MPa 20.4- 71.4kgf/cm2 2: 3-14MPa 30.6-143kgf/cm2 3: 3-21MPa 30.6-214kgf/cm2
R : Solenoid cutoff controlAS
Max. pump capacity (cm3/rev) Nominal 16, 22, 35, 45
Pump size 1, 2
1: AC100V2: AC200V3: DC12V4: DC24V
Solenoid power supply
A: SA-G01S: SS-G01
Solenoid specifications
122 1SR16B1– – –Explanation of model No.: PVS
Installation Dimension Drawing
SOL"ON"
SOL"OFF"
P-Q Characteristics
Discharge pressure P MPa
Pum
p ca
paci
ty q
cm
3 /re
v
A_Piston(P01-15)_E.q 03.11.20 0:46 PM Page 14
A
A-15
Pisto
n P
um
ps
2-pressure Control Type
PVS-1B-16W*A*-1222 S
PVS-2B-35W*A*-12(20)45 S
The coil surface temperature increases if this pump is kept continuously energized.Do not touch the surface of the coil directly with your hands.
SOL b
NA
CH
I
Rc 3/8
4–M10x16
SAEJ518b-3/4
525.4
21.2
82.6
12.5158
22±0.2
47.5
±0.2
677
181
55
19.0
5
43
49.5
106.4
130
52
11
42
124
8213
73
127
0 –0.2
5
0 –0.0
21φ
–0.0
36–0
.071
φ
4.76 0–0.012
24φ
233(
SS
-G01
)19
5(S
A-G
01)
Pressure adjusting screw (at solenoid OFF)
Flow rate adjusting screw
Drain port
Pressure adjusting screw (at solenoid ON)
Key width
Discharge port Suction portSAEJ518b-1
Lubrication port
Differential pressure adjusting screw (adjustment forbidden)
SAEJ518b-11/4
Rc 1/4
NA
CH
I
SOL bRc 1/2
4–M10x16
144146172
6513
45
90.5 10
43
172
53338
606
1921526.2±0.2
52.4
±0.2
88
317 (MAX )
222
69.5
28φ
A B
101.
6–0
.051
0φ
6.3 +0.015–0.010
SAEJ518b-1
212.
5(S
A-G
01)
254(
SS
-G01
)
φ
φ
A Bcm3/rev
3
22.23 0–0.021
0–0.524.9
25.385 0–0.025
0–0.2527.85
12D
20D
35
45
Pressure Range
Design No.
Pressure adjusting screw (at solenoid OFF)
Lock nut
Flow rate adjusting screw
Pilot port pp
Drain port
Pressure adjusting screw (at solenoid ON)
Differential pressure adjusting screw (adjustment forbidden)
Key width
Differential pressure adjusting screw (adjustment forbidden)
Lubrication port
Discharge port Suction port
0 to 30 to 2
Pressure adjustment range 0: 2- 3.5MPa 20.4- 35.7kgf/cm2 1: 2- 7MPa 20.4- 71.4kgf/cm2 2: 3-14MPa 30.6-143kgf/cm2 3: 3-21MPa 30.6-214kgf/cm2
W : 2-pressure controlAS
Max. pump capacity (cm3/rev) Nominal 16, 22, 35, 45
Pump size 1, 2
1: AC100V2: AC200V3: DC12V4: DC24V
Solenoid power supply
A: SA-G01S: SS-G01
Solenoid specifications
122 1SW16B1– – –Explanation of model No.: PVS
Installation Dimension Drawing
SOL"ON"
SOL"OFF"
P1 P2
P-Q Characteristics
Discharge pressure P MPa
Pum
p ca
paci
ty q
cm
3 /re
v
A_Piston(P01-15)_E.q 03.11.20 0:46 PM Page 15
A
A-16
Hyd
raulic P
um
ps
2-pressure, 2-flow rate Control Type w/ Solenoid Cutoff
PVS-1B-16RQ*A*-1222 S
PVS-2B-35RQ*A*-12(20)45 S
The coil surface temperature increases if this pump is kept continuously energized.Do not touch the surface of the coil directly with your hands.
SOL b
NA
CH
I
Rc 3/8
525.4
21.2
12.5158
22±0.2
47.5
±0.2
623
77
181 19.0
5
49.5
43
221
296(MAX)
106.4
130
52
11
124
8213
73
42
107.5(MAX)4–M10x16
24φ
0 –0.2
5
0 –0.0
21φ
82.6
–0.0
36–0
.071
φ
4.76 0–0.012
SAEJ518b-3/4 SAEJ518b-1
215(
SS
-G01
)
177(
SA
-G01
)
P2 pressure adjusting screw (at solenoid ON)
Drain portq1 flow rate adjusting screw
q2 flow rate adjusting screw
Key width
Differential pressureadjusting screw(adjustment forbidden)
Lubrication port
P1 pressure adjusting screw
Discharge port Suction port
SOL b
NA
CH
I
Rc 1/2
144146172
65
45
13
90.5
107.5(MAX)
104
317
253338
6
1921526.2±0.2
52.4
±0.2
88
222
352(MAX)
60
28φ
4–M10x16
A B
6.3 +0.015–0.010 19
4.5(
SA
-G01
)
236(
SS
-G01
)
SAEJ518b-11/4SAEJ518b-1
101.
6–0
.051
0φ
φ
φ
A Bcm3/rev
0 30 2
3
22.23 0–0.021
0–0.524.9
25.385 0–0.025
0–0.2527.85
12D
20D
35
45
Pressure Range
Design No.
Pressure adjusting screw (at solenoid ON)
q1 flow rate adjusting screw
q2 flow rate adjusting screw
Drain port
Key width
Lubrication port
P1 pressure adjusting screw
Discharge port Suction port
Differential pressure adjusting screw (adjustment forbidden)
Pressure adjustment range 0: 2- 3.5MPa 20.4- 35.7kgf/cm2 1: 2- 7MPa 20.4- 71.4kgf/cm2 2: 3-14MPa 30.6-143kgf/cm2 3: 3-21MPa 30.6-214kgf/cm2
RQ : 2-pressure, 2-flow rate control w/ solenoid cutoff
AS
Max. pump capacity (cm3/rev) Nominal 16, 22, 35, 45
Pump size 1, 2
1: AC100V2: AC200V3: DC12V4: DC24V
Solenoid power supply
A: SA-G01S: SS-G01
Solenoid specifications
122 1SRQ16B1– – –Explanation of model No.: PVS
Installation Dimension Drawing
SOL "ON"
SOL "OFF"
Discharge pressure P MPa
Pum
p ca
paci
ty q
cm
3 /re
v
P-Q Characteristics
A_Piston(P16-17)_E.q 03.11.20 0:45 PM Page 16
A
A-17
Hyd
raulic P
um
ps
2-cutoff Control Type
PVS-1B-16C*A*-1222 S
PVS-2B-35C*A*-12(20)45 S
The coil surface temperature increases if this pump is kept continuously energized.Do not touch the surface of the coil directly with your hands.
NA
CH
I
Rc 3/8
4–M10x16
525.4
12.5
158
22±0.247.5
±0.2
677
181
49.5
43
331(SS-G01)
25295(SA-G01)
296(MAX)
106.4
130
5211
12482
137
342
88
80
102
4.76 0–0.012
21.2
19.0
50 –0.2
5
0 –0.0
21φ
82.6
–0.0
36–0
.071
φ
24
SAEJ518b-3/4 Suction port
q1 flow rate adjusting screw
q2 flow rate adjusting screwDrain port
Key width
Lubrication port
Discharge port
P1 pressure adjusting screw
SAEJ518b-11/4
φ
Differential pressure adjusting screw (adjustment forbidden)
NA
CH
I
Rc 1/2
4–M10x16 144146172
65
45
1390
.5
102
104
317
2
53338
6
1921526.2±0.2
52.4
±0.2
88
222
352(MAX) 60
351(SA-G01)387(SS-G01)
A B
SAEJ518b-11/4SAEJ518b-1
6.3 +0.015–0.010
101.
6–0
.051
0φ
28φ
φ
φ
A Bcm3/rev
0 30 2
3
22.23 0–0.021
0–0.524.9
25.385 0–0.025
0–0.2527.85
12D
20D
35
45
Pressure Range
Design No.
q1 flow rate adjusting screwDrain port
q2 flow rate adjusting screw
Key width
Differential pressure adjusting screw (adjustment forbidden)P2 pressure
adjusting screwLubrication port
P1 pressure adjusting screw
Discharge portSuction port
Pressure adjustment range 0: 2- 3.5MPa 20.4- 35.7kgf/cm2 1: 2- 7MPa 20.4- 71.4kgf/cm2 2: 3-14MPa 30.6-143kgf/cm2 3: 3-21MPa 30.6-214kgf/cm2
C : 2-cutoff controlAS
Max. pump capacity (cm3/rev) Nominal 16, 22, 35, 45
Pump size 1, 2
1: AC100V2: AC200V3: DC12V4: DC24V
Solenoid power supply
A: SA-G01S: SS-G01
Solenoid specifications
122 1SC16B1– – –Explanation of model No.: PVS
Installation Dimension Drawing
SOL "ON"
SOL"OFF"
Discharge pressure P MPa
Pum
p ca
paci
ty q
cm
3 /re
v
P-Q Characteristics
A_Piston(P16-17)_E.q 03.11.20 0:45 PM Page 17
A
A-18
Pisto
n P
um
ps
Foot Mounting Kit
Coupling kit
Piping Flange Kit
Kit for PVS-0B: PSCF-100000
For PVS-1B, 2B
Kit Model No. Applicable Pump Model No.Accessories Dimensions
Bolt Q'ty Washer Q'ty A B C E F
IHM-2-10PVS-0B
PVS-1BTB-10×30 2 WP-10 2 127.7 152.5 69.8 1 150.8
IHM-4-10 PVS-2B TB-12×30 2 WP-12 2 220.7 246.5 107.95 1 114.3
Kit Model No.Dimensions Weight
kgH (I) (J) K N P Q (S) T φD φd1 φd2 φd3 φd4
IHM-2-10 96 64.5 32 17.5 13 M10 135 32.5 36.5 82.6 22 11 106.4 50 2.0
IHM-4-10 140 56.7 44 16 16 M12 195.5 12.7 53 101.6 22 11 146 40 5.5
Applicable Pump Model No. PVS-0B-8
Plunger Kit model No. Suction port Discharge port
L 46 40
L1 16 14
φK φ36 φ27
φD φ16 φ12
H 36 27
G screw size G3/4 G1/2
Rc screw size Rc3/4 Rc1/2
O-ring size 1B-P24 1B-P18
When only the mounting feet are required, the pump mounting bolts, washers and other parts are sold together as the Foot Mounting Kit.
Notes) 1. Joints are on sale in the Joint Kit which includes O-rings.2. The dimensions of the O-ring seal section on the
connector conforms with JIS B2351.3. O-ring 1B/B-** refers to JIS B2401-1B.
Notes) 1. The piping flange is on sale in the Flange Kit which includes mounting bolts, washers and O-rings.2. O-ring 1B/B-** refers to JIS B2401-1B.3. For details on tightening torque, see page C-11.
Applicable Pump Model No. PVS-1B-16/22 PVS-2B-35/45
Plunger Kit model No.PSF-101000 PSF-102000
Suction port Discharge port Suction port Discharge port
A 70 65 79 70
B 59 52 73 59
C 52.4 47.5 58.7 52.4
D 26.2 22.0 30.2 26.2
T 24 24 28 24
φd1 φ11 φ11 φ11 φ11
φd2 φ28 φ22 φ37 φ28
X 1 3/4 1-1/4 1
Mounting bolt TH-10×40 TH-10×40 TH-10×45 TH-10×40
Washer WS-B-10 WS-B-10 WS-B-10 WS-B-10
O-ring 1B-G35 1B-G30 1B-G45 1B-G35
Weight kga 0.6 0.5 0.75 0.6
A_Piston(P18-21)_E.q 03.11.20 0:45 PM Page 18
A
A-19
Pisto
n P
um
ps
To improve reliability, design Nos. 17 and 31 were adopted due to remodeling of the grease injection systemconnecting section.
Uni-pump SpecificationsExplanation of model No.
Motor selection curves
¡How to select the motorThe lower side of the output curves for each of the motors shown above indicates the operating range under rated outputfor that motor.
UPV-0A
20420
18418
16316
14314
12210281.612
4
6
16
8 10 212 4 60
2
214
( /min)
20.440.861.2
8
10
12
14
0.75kW
1.5kW
2.2kW
3.7kW
Dis
char
ge v
olum
e Q
Discharge pressure P MPa kgf/cm2
10
40
20
30
0.75kW
1.5kW
2.2kW
3.7kW
5.5kW
UPV-1A
20420
18418
16316
14314
12210281.6128 10 212 4 60
21420.440.861.2
( /min)
Dis
char
ge v
olum
e Q
Discharge pressure P MPa kgf/cm2
20
80
40
603.7kW
5.5kW
7.5kW
UPV-2A
20420
18418
16316
14314
12210281.6128 10 212 4 60
21420.440.861.2
( /min)
Dis
char
ge v
olum
e Q
Discharge pressure P MPa kgf/cm2
Design No. 17: PVS-1B 0.75-5.5kW PVS-2B 3.7 -7.5kW31: PVS-0B 0.75-3.7kW
Pressure adjustment range 0: 2- 3.5MPa 20.4- 35.7kgf/cm2 1: 2- 7MPa 20.4- 71.4kgf/cm2 2: 3-14MPa 30.6-143kgf/cm2 3: 3-21MPa 30.6-214kgf/cm2 (Note) Not available at 45 cm3/rev
Variable control mechanism N: pressure compensation type
Max. pump capacity (cm3/rev) Nominal 8, 16, 22, 35, 45
Motor mounting method Mounting foot type
Pump size 0: PVS-0B, 1: PVS-1B, 2: PVS-2B
PVS series uni-pump
Number of motor poles 4: 4 poles
0.7: 0.75kW 3.7: 3.7kW1.5: 1.5 kW 5.5: 5.5kW2.2: 2.2 kW 7.5: 7.5kW
Motor output
Auxiliary symbol None: Side port typeZ: Axial port type (PVS-1B, 2B)
Motor terminal None: Right side viewed from shaft endA: Left side viewed from shaft end
Note) UPV-
UPV-2A
is 0.75-5.5kW
is 3.7-7.5kW
0A1A
41 1.5N16A1– – –– – 17(31)–UPV
A_Piston(P18-21)_E.q 03.11.20 0:45 PM Page 19
A
A-20
Pisto
n P
um
ps
UPV-0A-8**-**-4-31(side port type)
UPV-1A-16**-**-4-1722
(side port type)
UPV-2A-35**-**-4-1745(side port type)
1. A class E totally enclosed fan-cooled type is used as the reference motor.2. 200 V/220 V, 60 Hz and 200 V, 50 Hz are used as the reference motor voltages.3. Viewed from the pump side, the suction port on the left side and the discharge port on the right side are used as the
reference port locations.4. Broken lines indicate instances for the A terminal. Broken lines pass through to the other side of the pump along its
center.
Note: A terminal measurements are in parentheses ( ).
(Round drain hole)
View R (4 locations)
R
Lubrication portB terminalA terminal
Discharge portG1/2
Suction portG3/4
Drain portRc 3/8 A terminal B terminal
Fan cover
110
77
ME E
GC
H
KD
KL KLD
J
11
164.5 (MAX)18
50
LIL A
O OFF
N
T
S
127.5149.5
φ
Flow rateadjusting screw
Pressure adjusting screw
(suction port, dischargeport position)
Suction port shape
R
View R (4 locations)
4-M10X16
Lubricationport B terminal
Suction portSAEJ518b-1
Discharge portSAE518b-3/4
B terminal
4-M10X16
Drain portRc 3/8
24
Pump modelNo. nameplate
A terminal
D
I82
124E E
M
J
CH
G
KL KL
52.4
±0.2
F
77 IL187 (MAX)
47.5
±0.2
55
26.2±0.2
O O
L
N181158 F
22±0.2T
S
A
KDφ
φ
24φ
Flow rateadjusting screw
Pressure adjusting screwA terminal
(suction port, dischargeport position)
View R (4 locations)
Suction port shape
Suction port Discharge portSAEJ518b-1
B terminal
Flow rateadjusting screw
Drain portRc 1/2
B terminal
4-M10X16
4-M10X16
A terminalA terminal
Lubricationport
58.7
±0.2
30.2±0.2
26.2±0.2
69.5
144F
KL
G
L
O
N
O
222
A
JE
104
C
M
52.4
±0.2
H
S
77
TF
257 (MAX)IL
E
I
DKL
192
28φ
SAEJ518b-11/4
28φ
(Round drain hol)KDφ
R(suction port, dischargeport locations)
Pressure adjusting screw
Installation Dimension Drawings
A_Piston(P18-21)_E.q 03.11.20 0:45 PM Page 20
A
A-21
Pisto
n P
um
ps
Output
kW
Motor Dimensions Frame
No.Weight
A IL C D E F G H I J L M N S×T KD KL O
0.75 124 107.5 80 0- 0.5 160 62.5 50 10 160 − 34 231.5 155 135 10×25 φ22 126 21 80M 12
1.5 142.5 118.5 90 0- 0.5 178 70 62.5 10 179 − 35 261 170 155 10×16 φ22 136 36.5 90L 16
2.2 160.5 136 100 0- 0.5 195 80 70 13 197.5 − 45 296.5 195 175 12×25 φ22 150 45.5 100L 20
3.7 171 143.5 112 0- 0.5 219 95 70 14 221.5 − 45 314.5 224 175 12×25 φ22 161 53 112M 29
5.5 217 163.5 132 0- 0.5 276 108 70 16 270 311.5 50 380.5 250 175 12×25 φ34 217 33.5 132S 48
7.5 217 163.5 132 0- 0.5 276 108 70 16 270 311.5 50 380.5 250 175 12×25 φ34 217 33.5 132S 54
Motor Specifications
A_Piston(P18-21)_E.q 03.11.20 0:45 PM Page 21
Pisto
n P
um
ps
PZS SERIESVARIABLE VOLUME PISTON PUMP *
*
*
M
0
Discharge port
Suction port
Drain port
PZS SeriesVariable Volume Piston Pump
70 to 220cm3/rev70 to 100cm3/rev 28MPa130 to 220cm3/rev 25MPa
¡Handling¡Pump Installation and Piping
PrecautionszUse flexible couplings for connect-
ing the pump shaft to the driveshaft, and prevent radial or thrustload from being applied to thepump shaft.
xEccentricity between the drive shaftand pump shaft should be no greaterthan 0.05mm, with an eccentric angleerror of 1° or less.
cKeep the clamping length of cou-plings and pump shafts at least 2/3the length of the coupling width.
vUse a sufficiently rigid pump mount-ing base.
bSet pump suction side pressure to-0.03 MPa or more (suction portflow velocity less than 2 m/sec).
nRaise part of the drain piping so it isabove the topmost part of the pumpbody, and insert the return section ofthe drain piping into the hydraulicoperating fluid. Also, observe thevalues in the following table in orderto limit the drain back pressure to0.1 MPa.
mMount the pump so the pump shaftis oriented horizontally.
,Use of rubber hose is recommend-ed in order to minimize noise andvibration.
¡Management of Hydraulic OperatingFluid
zUse only good-quality hydraulicoperating fluid with a kinematic vis-cosity during operation within therange of 20 to 200 mm2/sec.Normally, you should use an R&Otype and wear-resistant type of IS-OGV32 to 68 or equivalent. Theoptimum kinematic viscosity duringoperation is 20 to 50 mm2/sec.
xThe operating temperature range is5 to 60°C. When the oil tempera-ture at startup is 5°C or less, runthe pump at low pressure and lowspeed until the oil temperaturereaches 5°C.
cProvide a suction strainer with a fil-tering grade of about 100µ (150mesh).
(Continued on following page)
A
A-22
Features
qqHigh pressure, high reliabilityThese pumps deliver the perfect com-bination of high pressure (28MPa286kgf/cm2maximum) and high relia-bility. Hydraulic device energy effi-ciency is ensured because variablevolume capabil i t ies provide themeans to keep the discharge rate tothe desired level.
wwLow noise, low vibration operationThe semi-cylindrical swash plate of
the PVS series provides high supportand rigidity, making it possible toincrease the number of pistons (fromnine to 11) and equip optimal valveplates, all of which make low-noiseoperation possible.
eeHigh reliability, long lifeO-ring seals used for mating surfaceseliminate worries about oil leaks. Aspherical valve plate maintains opti-mal hydraulic pressure balance, for
stable operation across a wide rangeand better contamination resistancecharacteristics.
eeA wide range of possible applicationsIn addition to use as a stand-alonepump, a PVS Series pump can becombined with another IP pump in awide range of possible applications.
Note 1. Fixed discharge pump can be configured by combining with an IP pump.2. Pump capacity adjustment ranges are for control codes N, RS, and WS. For information about control code NQ, see page A-27.3. The standard direction of rotation is clockwise when viewed from the shaft end. Contact your agent for information about counterclockwise rotation.4. A keyed straight shaft is standard. Contact your agent for information about spline shafts.
Specifications
Model No.Item 3B, 4B, 5B 6B
Pipe joint
sizeAt least 3/4" At least 1"
Pipe I.D. At least φ17 At least φ22
Pipe length 1 m or less 1 m or less
Model No.
Pump
Capacity
cm3/rev
(Adjustment
Range)
Rated
Voltage
MPa
kgf/cm2
Maximum
Working
Pressure MPa
kgf/cm2
Pressure Adjustment
Range MPa
kgf/cm2
Revolution Speed min −1
Weight
kg
Fixed Discharge Pump (Note 1)
Min. Max.Capacity
cm3/rev
Pressure
MPa
kgf/cm2
PZS-3B-*-170* 1-10
3
4
70
(45 to 70)
21
214
28
286
2 to 27 20.4 to 071.4
2 to 21 20.4 to 214.4
2 to 28 20.4 to 286.4
500 1800 37 3.6 to 18.1821
214
PZS-4B-*-100* 1-10
3
4
100
(40 to 100)
21
214
28
286
2 to 27 20.4 to 071.4
2 to 21 20.4 to 214.4
2 to 28 20.4 to 286.4
500 1800 58 3.6 to 15.8021
214
PZS-5B-*-130* 1-10
3
4
130
(51 to 130)
21
214
25
255
2 to 27 20.4 to 071.4
2 to 21 20.4 to 214.4
2 to 25 20.4 to 255.4
500 1800 86 3.6 to 32.3021
214
PZS-6B-*-180* 1-10
3
4
180
(101 to 180)
21
214
25
255
2 to 27 20.4 to 071.4
2 to 21 20.4 to 214.4
2 to 25 20.4 to 255.4
500 1800 123 3.6 to 63.9021
214
PZS-6B-*-220* 1-10
3
4
220
(124 to 220)
21
214
25
255
2 to 27 20.4 to 071.4
2 to 21 20.4 to 214.4
2 to 25 20.4 to 255.
500 1500 126 3.6 to 63.9021
214
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vManage hydraulic operating fluid socontamination is maintained atclass NAS10 or lower.
bUse hydraulic operating fluid whenthe operating ambient temperature isin the range of 0 to 60°C.
¡Startup PrecautionszBefore starting up the pump, fill the
pump body with clean hydraulicoperating fluid through the lubrica-tion port.
xAn unload circuit is required whenthe mo to r i s s ta r t ed unde r
condition O−3. Contact your agentabout the unload circuit.
cCheck to make sure that the rotationdirection of the pump is the same asthe rotation direction indicated by thearrow on the pump body.
vAir entering the pump or pipes cancause noise or vibration. At startup,set the pump discharge side to ano-load state, and operate thepump in the inching mode toremove any air that might be in thepump or pipes.
bEquip an air bleed valve in circuitswhere it is difficult to release airbefore startup.(See "IP Pumps" on page C-13.)
¡Configuring Pressure and DischargeRate SettingsThe factory default pump dischargerate setting is the setting's maxi-
mum value, while the default dis-charge pressure is the settings min-imum value. Change the dischargerate and discharge pressure set-tings in accordance with your par-ticular operating conditions.
[Pressure Adjustment]Rotating the pres-sure adjustingscrew clockwiseincreases pres-sure.
[Discharge VolumeAdjustment]
Rotating the flowra te ad jus t ingscrew clockwisedecreases the dis-charge rate.
Note: Securely tighten the lock nut after makingadjustments.
Model No. Oil Amount cm3
PZS-3B 1000
PZS-4B 1800
PZS-5B 2200
PZS-6B 3000
Understanding Model NumbersStandard typePressure compensation(N)
Option type2-Pressure, 2-Flow Rate Control Type (NQ)
Pressure adjustment range 1: 2 to 7MPa 20.4 to 71.4kgf/cm2 3: 2 to 21MPa 20.4 to 214kgf/cm2 4: 2 to 28MPa 20.4 to 286kgf/cm2Note: PZS-5B/6B maximum operating pressure: 25MPa (255kgf/cm2)
Design number
Variable Control Mechanisms N: Pressure compensation control
Pump capacity (cm3/rev) 70, 100, 130, 180, 220
Mounting method B: Flange type mounting A: Foot type mounting
Pump size 3, 4, 5, 6
PZS – – –4 B 100 10N
Pressure adjustment range 1: 2 to 7MPa 20.4 to 71.4kgf/cm2 3: 2 to 21MPa 20.4 to 214kgf/cm2 4: 2 to 28MPa 20.4 to 286kgf/cm2Note: PZS-5B maximum operating pressure: 25MPa (255kgf/cm2)
Design number
Variable Control Mechanisms NQ: 2-pressure, 2-flow rate control
Pump capacity (cm3/rev) 70, 100, 130
Mounting method B: Flange type mounting A: Foot type mounting
Pump size 3, 4, 5
PZS 4 B 100 N Q 10– – –
Pum
p ca
paci
tycm
3 / r
ev
Discharge pressure MPa
P-Q characteristics
PHPL
qL
qH
P-Q characteristics
Pum
p ca
paci
tycm
3 / r
ev
Discharge pressure MPa
*
*
*M
0
Discharge port
Suction port Drain port
Rotate left
Rotate right
Pressure
Pressure adjustment range
Dis
char
ge
rate
PressureDisc
harg
e ra
te a
djustm
ent r
ange
Disc
harg
e ra
te
Rotate left
Rotate right
*
*
*
M
0
Discharge port
Suction port
Drain port
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Installation Dimension Drawings
Drain port (G3/4)
Pressure adjusting screwPilot port (Rc 1/4)
Flow rate adjusting screw
M10x16
Key width 7.94 0
–0.05
Discharge port
SAEJ518b-11/2
Suction portSAEJ518b-11/4
885261 31
.75
35.3
312
7
58.7
30.2223
296 (MAX)
128164
128
8513
6
18
306 (MAX)
548
34 57
147
17
172
φ0 –0.0
51
30φ
0 –0.0
510 –0.2
5
φ
(PCD 181)
φ
Lubrication port
Pressure Compensation TypeInstalling a remote control relieve valve to thepilot port provides remote control of pressurecompensation.PZS-3B-70N*-10
Solenoid Cutoff Control Type (RS)
2-Pressure Control System (WS)
Pressure adjustment range 1: 2 to 7MPa 20.4 to 71.4kgf/cm2 3: 2 to 21MPa 20.4 to 214kgf/cm2 4: 2 to 28MPa 20.4 to 286kgf/cm2Note: PZS-5B/6B maximum operating pressure: 25MPa (255kgf/cm2)
Design number
Solenoid power supply 1: AC100V 2: AC200V 3: DC12V 4: DC24V
Variable Control Mechanisms RS: Solenoid cutoff control
Pump capacity (cm3/rev) 70, 100, 130, 180, 220
Mounting method B: Flange type mounting A: Foot type mounting
Pump size 3, 4, 5, 6
PZS 4 B– – –100 R S 10
Pressure adjustment range 1: 2 to 7MPa 20.4 to 71.4kgf/cm2 3: 2 to 21MPa 20.4 to 214kgf/cm2 4: 2 to 28MPa 20.4 to 286kgf/cm2Note: PZS-5B/6B maximum operating pressure: 25MPa (255kgf/cm2)
Variable Control Mechanisms WS: 2-pressure control type
Pump capacity (cm3/rev) 70, 100, 130, 180, 220
Design number
Solenoid power supply 1: AC100V 2: AC200V 3: DC12V 4: DC24V
Mounting method B: Flange type mounting A: Foot type mounting
Pump size 3, 4, 5, 6
PZS 4 B 100 W 10S– – –
SOL"ON"SOL"OFF"
P-Q characteristics
Pum
p ca
paci
tycm
3 / r
ev
Discharge pressure MPa
*
*
*
M
0
Discharge port
Suction port Drain port
SOL"ON"SOL"OFF"
P-Q characteristics
Pum
p ca
paci
tycm
3 / r
evPHPL
Discharge pressure MPa
*
*
*
M
0
Discharge port
Suction port Drain port
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PZS-4B-100N*-10
PZS-5B-130N*-10
PZS-6B-180N*-10PZS-6B-220N*-10
Flow Adjustment Rotation Angle (r) and Pump Capacity (q)
Use a flow adjustment length that is within the range noted in the abovechart. Using a length that is outside the lower limit adjustment range canlead to oil leaks.
Use a flow adjustment length that is within the range noted in the abovechart. Using a length that is outside the lower limit adjustment range canlead to oil leaks.
Key width 9.53 –0.015
0
Drain port (G3/4)Pressure adjusting screw
Pilot port (Rc 1/4)
Flow rate adjusting screw
Discharge port Suction port161.6200
8
90
153
100
161.
6
257M12x20
1055
347 (MAX)
77.8
42.9
91
81
25
21
195
167
38.1
42.2
33φ
0 –0.0
300 –0.1
5
φ
SAEJ518b-2SAEJ518b-2
( 228.5)
φ
152.
40 –0
.05
φ
Flow rate adjusting screw
Pilot port
(G1/4)Pressure adjusting screw Drain port (G3/4)
Key width 11.113 –0.051
0
667
25M12x20
10100
268316
35
50.8
88.9
362 (MAX)
Discharge port Suction port110
224.6(265)
224.
6(2
65)
155
110
206
70
185
SAEJ518b-21/2SAEJ518b-21/2
22φ
165.
1–0
.040
0
44.
4549
.428
–0.0
510 0 –0.2
5
φ
φ
38φ
Discharge port Suction port
Key width
14 0–0.018
Drain port (G1)
Pressure adjusting screw
Pilot port (G1/4)
Flow rate adjusting screw
(265
)19
4
76
245
8812
560
74
333411
50.8
88.9
25M12x20
131 131(265)
99
(224.6)
(224
.6)
209
22φ
SAEJ518b-3SAEJ518b-21/2
52
φ
165.
1–0
.040
0
50
53.5+0.
021
+0.
008
φ
φ–0
.3 0
105
140
120
130
100
80
20
70
60
51
404245
252015
Flow rate adjustment length mm
PZS-5
B-130
PZS-4B-100
PZS-3B-70
Pum
p ca
paci
ty q
cm3 /r
ev
105
225220
200
175180
150
75
125124
100101
252015
Flow rate adjustment length mm
PZS-6
B-220
PZS-6B-1
80
Pum
p ca
paci
ty q
cm3 /
rev
Flow rate adjustment length: R
End plugLock nut
Flow rate adjusting screw
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2-Pressure, 2-Flow Rate Control TypePZS-3B-70N*Q*-10
PZS-4B-100N*Q*-10
PZS-5B-130N*Q*-10
Pump Volume Adjustable Range
Pump Model No.Volume Adjustment Range cm3/rev Factory Default
qL Setting (cm3/rev)qH Note 1 qL Note 2
PZS-3B-70N*Q*-10 5 to 70 5 to 40 14
PZS-4B-100N*Q*-10 16 to 100 7 to 60 20
PZS-5B-130N*Q*-10 17 to 130 8 to 70 26
Note1: The setting range for pump maximum capacity qH depends on the qL setting.Note2: Overall efficiency at a low flow rate is worse than at the maximum flow rate. Keep this in
mind when deciding on the drive motor capacity.
Drain port (G3/4)
PH pressure adjusting screw
qH flow rate adjusting screw
M10x16
Key width 7.94 0
–0.05
Discharge port
SAEJ518b-11/2
Suction port
SAEJ518b-11/4
PL pressure adjusting screw
qL flow rate adjusting screw
885 31
.75
35.3
3
12758
.730.2
223 128164
128
8513
6
18
548
34
411 (MAX)
127.5
172279
17
177
30φ
0 –0.0
510 –0
.25
φ
0 –0.0
51φ
PCD 181
φ
Lubrication port
M12x20
Drain port (G3/4)
PH pressure adjusting screw
qH flow rate adjusting screw Key width
9.53 –0.015 0
Discharge port
SAEJ518b-2Suction port
SAEJ518b-2
PL pressure adjusting screw qL flow rate adjusting screw
452 (MAX)
197
129
100
90320257 8
55 1015
2.4
42.2
38.1
77.8
42.9
153
161.
6
200161.6
21
81
91
( 228.5)
φ
0–0
.030
0 –0.1
5
φ
0 –0.0
5φ
33φ
Lubrication port
M12x20
Drain port (G3/4)
PH pressure adjusting screw
qH flow rate adjusting screw
Key width 11.113 –0.051
0
Discharge port Suction port
PL pressure adjusting screw qL flow rate adjusting screw
44.4
549
.428
165.
1
667
25 10100268
35
50.8
88.9
466 (MAX)
110224.6265
224.
626
515
5
110
215
141
SAEJ518b-21/2SAEJ518b-21/2
22φ
0 –0.0
40φ
38φ
0 –0.0
5φ
0 –0.2
5
Lubrication port
Discharge pressure MPaPL
qH
qL
PH
P-Q characteristics
cm3/rev
Pum
p ca
paci
ty q
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40 44 48 523640
50
60
70
80
90
100
Adjustment length: L2 (mm)20 22 24 26 28 30 32 3416 1814
0
20
10
30
40
50
60
70
80
Adjustment length: L1 (mm)
90
100
110
120
130
140
32
Pump maximum capacity adjustment length
Pump small capacity adjustment length
PZS-5B
PZS-4B
PZS-3B
PZS-5B
PZS-4B
PZS-3B
qL (small capacity) adjusting screw
qH (maximum capacity) adjusting screw
L1L2
Pum
p ca
paci
ty q
L (c
m3 /
rev)
Pum
p ca
paci
ty q
L (c
m3 /
rev)
PZS Pump 2-Pressure 2-Flow Rate Control Flow Rate Adjustment Graph• Be sure to adjust the low flow rate first, and then adjust the maximum flow rate.• Remember that the maximum flow rate adjustment range (lower limit) changes in accordance with the low flow rate
adjustment. The maximum flow rate adjustment lower limit is equivalent to the low flow rate adjustment length (L1) plus11mm.
• Pump efficiency at a low flow rate is worse than at the maximum flow rate. Keep this in mind when deciding on the drivemotor capacity.
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Solenoid Cutoff Control TypePZS-3B-70R*S*-10
PZS-4B-100R*S*-10
PZS-6B-180R*S*-10PZS-6B-220R*S*-10
Using the installed solenoid valve so it is continuously conducting current can cause the coil surface to become hot.Do not touch the surface of the coil directly with your hands.
Drain port (G3/4)
Pressure adjusting screw
Flow rate adjusting screw
M10x16
Key width 7.94 –0.05
0
Discharge port
SAEJ518b-11/2Suction port
885261
31.7
535
.33
127
58.7
30.2 223
296 (MAX)
128164172
128
8513
6
18
306 (MAX)
548
34
14520
210
2.5
12857
17SAEJ518b-11/4
(PC
D
181)
φ
0 –0.0
51φ
30φ
0 –0.0
51φ
0 –0.2
5
Lubrication port
Key width 9.53 –0.015
0
Drain port (G3/4)
Pressure adjusting screw
Flow rate adjusting screw
Discharge port Suction portM12x20
222
129
161.6200
152.
4
8
90
153
100
161.
6
257
38.1
42.2
1055
77.8
42.9
91
81
25
195
21
Lubrication port
347 (MAX)SAEJ518b-2SAEJ518b-2
0 –0.0
5φ
33φ
0 –0.0
30φ
0 –0.1
5
( 228.5)φ
Flow rate adjusting screw
Pressure adjusting screwDrain port (G3/4)
Key width 11.113 0
-0.051
Discharge port Suction port
M12x20
133
232
14170
32.5 44.4
549
.428
165.
1
667
2510100
268316
35
50.8
88.9
362 (MAX)
110224.6265
224.
626
515
5
110
SAEJ518b-21/2SAEJ518b-21/2
22φ
0 –0.0
51 0 –0
.25
φ
φ
0 –0.0
40
38φ
Lubrication port
Discharge port Suction port
Key width14 0
–0.018
Drain port (G1)
Pressure adjusting screw
Flow rate adjusting screw
M12x20
147
156.
525
6
(265
)19
4
76
245
8812
50
165.
1
53.5
560
74
333410.5
50.8
88.9
25131 131
(265)
99
(224.6)
(224
.6)
52
22
φ
φ
SAEJ518b-3SAEJ518b-21/2
+0.
021
+0.
008
φ
0 –0.0
40φ
Lubrication port
PZS-5B-130R*S*-10
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2-Pressure Control TypePZS-3B-70W*S
PZS-4B-100W*S*-10
PZS-5B-130W*S*-10
PZS-6B-180W*S*-10PZS-6B-220W*S*-10
Using the installed solenoid valve so it is continuously conducting current can cause the coil surface to become hot. Do not touch the surface of the coil directly with your hands.
Drain port (G3/4)
Flow rate adjusting screw
M10x16
Key width 7.94 0
–0.05
Discharge port
SAEJ518b-11/2
Suction port
PL pressure adjusting screw
PH pressure adjusting screw
242
885261
31.7
535
.33
12758
.730.2 223
296 (MAX)
128164
128
8513
6
18
306 (MAX)
548
34 (PCD 181)
145
102.
5
12857
30
17SAEJ518b-11/4
φ
φ
0 –0.0
510 –0
.25
φ
φ 0 –0
.051
Lubrication port
172
Key width 9.53 –0.015
0
Drain port (G3/4)
Flow rate adjusting screw
Discharge port
SAEJ518b-2
Suction portSAEJ518b-2
M12x20
PH pressure adjusting screwPL pressure adjusting screw
33
262
129
161.6200
152.
4
8
90
153
100
161.
6
257 38.1
42.2
1055
347 (MAX)
77.8
42.9
91 ( 228.5)
81
25
21
φ
φ
φ
φ0 –0
.15
0 –0.0
30
0–0
.05
Lubrication port
Flow rate adjusting screw
Drain port (G3/4)
Key width 11.113 –0.051
0
Discharge port Suction portSAEJ518b-21/2SAEJ518b-21/2
M12x20
PH pressure adjusting screw
PL pressure adjusting screw
32.5 44.4
5
49.4
28
165.
1
667
2510100
268316
35
50.8
88.9
362 (MAX)
272
133
14170
110224.6(265)
224.
6(2
65)
155
110
22
Lubrication port
φ
0 –0.2
5
0 –0.0
51
0 –0.0
40
φ
φ
Discharge port Suction port
Key width 14 0
–0.018
Drain port (G3/4)
Flow rate adjusting screw
M12x20
PL pressure adjusting screw
PH pressure adjusting screw
147
156.
5
(265
)19
4
76
245
8812
50
165.
1
53.5
560
74
333410.5
50.8
88.9
25131 131
(265)
99
(224.6)
(224
.6)
22
296
52φ
SAEJ518b-3SAEJ518b-21/2
φ
0 –0.0
40
+0.
021
φ+
0.00
8
φ
Lubrication port
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Discharge pressure P MPakgf/cm2
0 7 14 21 2870.4 143 214 286
20
30
10
0
40
50
60
100
110
120
130
50
60
70
80
90
100
1800min–1
1500min–1
Overall efficiency η
Volume efficiency ηv
1500min–1
1800min–1
General Performance
LinLin
Q
Discharge pressure P MPakgf/cm2
0 7 14 21 2870.4 143 214 286
2
0
8
6
4
1800min–1
1500min–1
Axial Input at Full Cutoff
Discharge pressure P MPakgf/cm2
0 7 14 21 2870.4 143 214 286
60
80
70 1800min–1
1500min–1
Noise Characteristics
DR
Discharge pressure P MPakgf/cm2
0 7 14 21 2870.4 143 214 286
20
0
40
60
0
5
10
100
120
140
1800min–1
1500min–1
1500min–1
1800min–1
Pressure - Flow Rate Characteristics
Q
Discharge pressure P MPakgf/cm2
0 7 14 21 2870.4 143 214 286
Q=126r/min
Q=100r/min
Q=80r/min
Q=60r/min
30
40
20
10
50
60
Axial input
Effi
cien
cyη,
ηv%
Axia
l inp
ut a
t ful
l cut
off
kW
Dis
char
ge r
ate
Q r
/min
D
isch
arge
rat
e Q
r/m
in
Inpu
t Lin
kW
Inpu
t Lin
kW
Axi
al in
put k
W
Dra
in r
ate
DR
r/m
inN
oise
Lev
el d
B(A
)
Discharge pressure P MPakgf/cm2
0 7 14 21 2870.4 143 214 286
20
0
40
60
80
140
160
180
50
60
70
80
90
100
1800min–1
1500min–1
Overall efficiency η
Volume efficiency ηv
1500min–1
1800min–1
General Performance
LinLin
Q
Discharge pressure P MPakgf/cm2
0 7 14 21 2870.4 143 214 286
2
0
8
6
41800min
–1
1500min–1
Axial input at full cutoff
Discharge pressure P MPakgf/cm2
0 7 14 21 2870.4 143 214 286
60
80
70
1800min–1
1500min–1
Noise Characteristics
DR
Discharge pressure P MPakgf/cm2
0 7 14 21 2870.4 143 214 286
20
0
40
60
80
0
5
10
100
140
1801800min–1
1500min–1
1500min–11800min
–1
Pressure - Flow Rate Characteristics
Q
Discharge pressure P MPakgf/cm2
0 7 14 21 2870.4 143 214 286
Q=60r/min
Q=100r/min
Q=180r/min
Q=140r/min
60
80
40
20
100
Axial input
Effi
cien
cyη,
ηv%
Dis
char
ge r
ate
Q r
/min
D
isch
arge
rat
e Q
r/m
in
Inpu
t Lin
kW
Inpu
t Lin
kW
Dra
in r
ate
DR
r/m
inN
oise
Lev
el d
B(A
)
Axi
al in
put k
W
Axia
l inp
ut a
t ful
l cut
off
kW
Performance Curves Typical Characteristics at a Hydraulic Operating Fluid Kinematic Viscosity of 46 mm2/s
PZS-3B-70N*-10
Typical Characteristics at a Hydraulic Operating Fluid Kinematic Viscosity of 46 mm2/sPZS-4B-100N*-10
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Discharge pressure P MPakgf/cm2
0 7 14 21 2570.4 143 214 255
40
60
20
0
80
100
120
180
200
220
240
50
60
70
80
90
100
1800min–1
1500min–1
Overall efficiency η
Volume efficiency ηv
1500min–1
1800min–1
General Performance
Lin
Q
Discharge pressure P MPakgf/cm2
0 7 14 21 2570.4 143 214 255
60
80
70
1800min–1
1500min–1
Noise Characteristics
Discharge pressure P MPakgf/cm2
0 7 14 21 2570.4 143 214 255
Q=234r/min
Q=200r/min
Q=150r/min
Q=100r/min
60
80
40
20
100
120Axial input
Discharge pressure P MPakgf/cm2
0 7 14 21 2571 143 214 255
40
0
80
120
0
5
10
160
200
240
1800min–1
1500min–1
1500min–1
1800min–1
Pressure – Flow Rate Characteristics
Discharge pressure P MPakgf/cm2
0 7 14 21 2571 143 214 255
2
0
12
14
10
8
6
4
Axial input at full cutoff
1800min–1
1500min–1
Effi
cien
cyη,
ηv%
Dis
char
ge r
ate
Q r
/min
Dis
char
ge r
ate
Q r
/min
D
rain
rat
e D
R r
/min
Inpu
t Lin
kW
Inpu
t Lin
kW A
xial
inpu
t kW
Axi
al in
put a
t ful
l cut
off
kW
Noi
se L
evel
dB
(A)
Typical Characteristics at a Hydraulic Operating Fluid Kinematic Viscosity of 46 mm2/sPZS-5B-130N*-10
Discharge pressure P MPakgf/cm2
0 7 14 21 2570.4 143 214 255
40
60
20
0
80
100
120
140
240
270
330
300
50
60
70
80
90
100
1800min–1
1500min–1
Overall efficiency η
Volume efficiency ηv
1500min–11800min
–1
General Performance
Lin
Q
Discharge pressure P MPakgf/cm2
0 7 14 21 2570.4 143 214 255
2
0
12
14
16
10
8
6
4
1800min–1
1500min–1
Axial input at full cutoff
Discharge pressure P MPakgf/cm2
0 7 14 21 2570.4 143 214255
60
80
70
1800min–1
1500min–1
Noise Characteristics
Discharge pressure P MPakgf/cm2
0 7 14 21 2570.4 143 214 255
Q=324r/min
Q=250r/min
Q=200r/min
Q=150r/min
60
100
80
40
20
140
120
Axial input
Effi
cien
cyη,
ηv%
Dis
char
ge r
ate
Q r
/min
Dis
char
ge r
ate
Q r
/min
D
rain
rat
e D
R r
/min
Inpu
t Lin
kW
Inpu
t Lin
kW Axi
al in
put k
W
Axi
al in
put a
t ful
l cut
off
kW
Noi
se L
evel
dB
(A)
Lin
DR
Discharge pressure P MPakgf/cm2
0 7 14 21 2571 143 214 255
40
0
80
120
160
0
5
10
210
270
330
1500min–1
Pressure – Flow Rate Characteristics
Q
1800min–1
1800min–1
1500min–1
Typical Characteristics at a Hydraulic Operating Fluid Kinematic Viscosity of 46 mm2/sPZS-6B-180N*-10
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Typical Characteristics at a Hydraulic Operating Fluid Kinematic Viscosity of 46 mm2/sPZS-6B-220N*-10
Cross-sectional DrawingPZS-3B-70N*-10PZS-4B-100N*-10PZS-6B-**N*-10
List of Sealing Parts
Part No. Part Name
123456789
101112131415161718192021222324252627
BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderThrust plateSpring CSpring SControl pistonEnd plugGuide screwSpring holderRetainerNeedleKeyPlugPinOrificeNutBall bearing
Part No. Part Name
28293031323334353637383940414243444546474849505152
Needle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringBackup ringOrificeFlat philips head screwPlugPinBoltPlugO-ringPlateWasherBoltEye bolt
Part
No.Name
Product NumberRemarks
PZS-3B Q'ty PZS-4B Q'ty PZS-6B Q'ty
29 Oil seal TCN-456812 1 TCN-507212 1 TCN-659013 1 NOK
33 O-ring 1B-G95 1 1B-G105 1 1B-G135 1 JIS B 2401
34 O-ring 1B-G130 1 1B-G155 1 1B-G200 1 ″35 O-ring 1B-G50 1 1B-G50 1 1B-G65 1 ″36 O-ring 1B-P34 1 1B-P36 1 1B-P41 1 ″37 O-ring 1B-P12 1 1B-P16 1 1B-P16 1 ″38 O-ring 1B-P21 2 1B-P21 3 1B-P21 3 ″39 O-ring Note 1 1 1B-P9 1 1B-P10 1 ″40 O-ring 1B-P8 5 1B-P8 5 1B-P8 8 ″41 Backup ring T2-P12 1 T2-P16 1 T2-P16 1 JIS B 2407
48 O-ring Note 1 1 1B-G85 1 1B-G85 1 JIS B 2401
Note 1: Contact your agent about this type of O-ring.
Discharge pressure P MPakgf/cm2
0 7 14 21 2570.4 143 214 255
40
60
20
0
80
100
120
140
240
270
330300
50
60
70
80
90
100
Overall efficiency η
Volume efficiency ηv
1500min–1
1200min–1
General Performance
Lin
Discharge pressure P MPakgf/cm2
0 7 14 21 2570.4 143 214 255
2
8
10
12
14
16
6
4
1500min–1
1200min–1
Axial Input at Deadhead
Discharge pressure P MPakgf/cm2
0 7 14 21 2570.4 143 214 255
60
80
70 1200min–11500min–1
Noise Characteristics
1500min–1
1200min–1Discharge rate Q
Input
Discharge pressure P MPakgf/cm2
0 7 14 21 2570.4 143 214 255
Q=330r/min
Q=250r/min
Q=200r/min
Q=150r/min
80
100
40
60
20
10
120
160
140
Axial input
Effi
cien
cyη,
ηv%
Dis
char
ge r
ate
Q r
/min
D
isch
arge
rat
e Q
r/m
in
Dra
in r
ate
DR
r/m
in
Inpu
t Lin
kW
Inpu
t Lin
kW Axi
al in
put k
W
Axi
al in
put a
t Dea
dhea
d kW
Noi
se L
evel
dB
(A)
Lin
DR
Discharge pressure P MPakgf/cm2
0 7 14 21 2571.4 143 214 255
40
0
80
120
160
0
5
10
210
270
3301500min–1
1200min–1
1500min–1
1200min–1
Pressure – Flow Rate Characteristics
QDischarge rate
Drain rate
Input
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PZS-5B-130N*-10
PZS-5B
Pressure Compensator
Part No. Part Name
2829303132333435363738394041424344454647484950515253
Ball bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringBackup ringBoltFlat philips head screwPlugPlugPlugOrificeO-ringPlateWasherBoltPlugEye bolt
Part No. Part Name
12345678910
10-110-210-310-410-511
Valve body SpoolSpring guideSprint bearingSpringRetainerNeedle valveValve seatSpringAdjustment screw kitAdjustment screwNutO-ringNutSpring pinRetainer
Part No. Part Name
1213141516171819202122
CollarPlugPlugNutSocket head screwO-ringO-ringO-ringO-ringO-ringPlug
Parts marked by an asterisk "*" are not available on the market. Consult your agent.
Part No. Name Q'ty Size Remarks
13 Gasket 1 * 3 Bond
30 Oil seal 1 TCN-608212 N. O. K
34 O-ring 1 1B-G125 JIS B 2401
35 O-ring 2 1B-P21 JIS B 2401
36 O-ring 1 1B-P16 JIS B 2401
37 O-ring 1 1B-P42 JIS B 2401
38 O-ring 1 1B-P14 JIS B 2401
39 O-ring 5 1B-P8 JIS B 2401
40 O-ring 2 1B-P7 JIS B 2401
41 Backup ring 1 T2-P16 JIS B 2407
48 O-ring 1 1B-G85 JIS B 2401
Part No. Part Name
123456789
101112131415161718192021222324252627
BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust plateSeal holderGasketSpring CSpring SControl pistonEnd plugGuide screwThrust bushSpring holderRetainerNeedleKeyPlugPinConnectorNut
A_Piston(P22-34)_E.q 03.11.20 0:44 PM Page 33
PZM-*-10 IHM-55-10
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List of Sealing Parts
Screw In Type
Welded Type
Foot Mounting Installation Measurement Chart
Piping Flange Kit
Foot Mounting
Kit Model No.
Applicable Pump
Model No.
Accessories Measurements (mm)
Bolt Q'ty Washer Q'ty A B C E F G H (I)
PZM-3-10 PZS-3B TH-16×40 4 WP-16 4 295.3 334 152.4 1 − 139.7 203 104.5
PZM-4-10 PZS-4B TB-20×45 4 WP-20 4 290 334 160 1 − 135 198 95
IHM-55-10 PZS-5B, 6B TH-20×50 4 WS-B-20 4 330 370 200 1 125 125 300 40
Foot Mounting
Kit Model No.
Measurements (mm) Weight
kg(J) K L M N P Q R (S) T φD φd1 φd2 φd4
PZM-3-10 60 25 128 128 25 M16 259 - 44.5 61 127 35 18 φ186 13.5
PZM-4-10 62 28 161.6 161.6 25 M20 270 220 33 62 152.4 34 18 φ152.4 18.0
IHM-55-10 70 (Note) 30 224.6 224.6 30 M20 340 275 20 90 165.1 34 18 φ140 32.0
Note The IHM-55-10 (J) dimension (70) is the value for the PZS-5B. This dimension becomes 58 in the case of the PZS-6B.The IHM-55-10 (I) dimension (40) is the value for the PZS-5B. This dimension becomes 28 in the case of the PZS-6B. See the IHM-45-10 on pages B-36 and C-12 to see what the PZM-3-10 looks like.
Screw In Type
Flange Kit model No.
Applicable Pump
Model No.
IN Flange
Flange Part No. Bolt Washer O-ring
PJF-10300T PZS-3B IH03J-100120 1 TH-12×55 4 WS-B-12 4 1B-G50 1
PJF-10400T PZS-4B IH03J-100160 1 TH-12×60 4 WS-B-12 4 1B-G60 1
PJF-10500T PZS-5B IH03J-100200 1 TH-12×65 4 WS-B-12 4 1B-G75 1
PJF-10600T PZS-6B IH03J-100240 1 TH-16×75 4 WS-B-16 4 1B-G85 1
Welded Type
Flange Kit model No.
Applicable Pump
Model No.
IN Flange
Flange Part No. Bolt Washer O-ring
PJF-10300E PZS-3B IH03J-200120 1 TH-12×55 4 WS-B-12 4 1B-G50 1
PJF-10400E PZS-4B IH03J-200160 1 TH-12×60 4 WS-B-12 4 1B-G60 1
PJF-10500E PZS-5B IH03J-200200 1 TH-12×75 4 WS-B-12 4 1B-G75 1
PJF-10600E PZS-6B IH03J-200240 1 TH-16×75 4 WS-B-16 4 1B-G85 1
OUT FlangePlug
Flange Part No. Bolt Washer O-ring
IH03J-100100 1 TH-10×55 4 WS-B-10 4 1B-G40 1 TPHA-1/4 1
IH03J-100160 1 TH-12×60 4 WS-B-12 4 1B-G60 1 −
IH03J-100200 1 TH-12×65 4 WS-B-12 4 1B-G75 1 −
IH03J-100200 1 TH-12×65 4 WS-B-12 4 1B-G75 1 −
OUT FlangePlug
Flange Part No. Bolt Washer O-ring
IH03J-200100 1 TH-10×55 4 WS-B-10 4 1B-G40 1 TPHA-1/4 1
IH03J-200160 1 TH-12×60 4 WS-B-12 4 1B-G60 1 −
IH03J-200200 1 TH-12×65 4 WS-B-12 4 1B-G75 1 −
IH03J-200200 1 TH-12×65 4 WS-B-12 4 1B-G75 1 −
• See page C-11 for dimensions.• O-ring 1B-** refers to JIS B2401-1B-**.• See page C-11 for details on tightening torque.
Foot Mounting Kit
4 to PLR
GH
ST TAB
CK J
I
d2d1φ
φ
NE
QM Dφ
4-PLR
d1d2
EN T TAB
MQ
C
GF SH
K (J)
(I)
D d4
φφ
φ φ
Part
No.Name
Part NumberRemarks
PZS-3B, 4B Q'ty PZS-5B, 6B Q'ty
10-3 O-ring 1B-P10A 1 1B-P10A 1 JIS B 2401
17 O-ring 1B-P8 1 1B-P11 2 ″18 O-ring 1B-P9 4 1B-P9 5 ″19 O-ring 1B-P5 1 1B-P14 1 ″20 O-ring 1B-P12 1 1B-P22 1 ″21 O-ring 1B-P14 1 1B-P14 1 ″
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PZ SERIES PROPORTIONALVOLUME PISTON PUMP
PZ SeriesLoad Sensitive Variable Piston Pump
35 to 220cm3/rev21MPa
Features
qThe PZ Series load sensitive vari-able piston pump employs the semi-cylindrical swash plate that is part ofthe basic technology used by thePVS series variable piston pump.To this it adds a hydrostatic bearingmechanism, valve plate, and othernoise reducing mechanisms for
operation that is even quieter thanthat of PVS Series pumps.
wThe pump body houses an electro-hydraulic proportional control valve,compensator, and surge cutoffvalve, which eliminates the need forsuperfluous piping.
eThe electro-hydraulic proportional con-
trol valve uses the proven force feed-back system for improved hysteresis,repeatability, and response.
rThe ability to create a double pumpconfiguration with an IP pump fur-ther expands the range of possibleapplications.
Pressure/Flow Rate Control System SpecificationsPressure Control System
Flow Rate Control System
Pump System Specifications
Note1. Can be used in combination with an IP pump to config-ure a fixed discharge pump.
Note2. The PZ-4B-130 model number was changed to PZ-5B-130.
Note3. Maximum flow rate depends on the revolution speed. Values in the above table are fora speed of 1800min-1 for the PZ-2B to PZ-6B-180, and 1500min-1 for the PZ-6B-220.
Model No.Pump
Capacitycm3/rev
MaximumWorkingPressure
MPakgf/cm2
Pressure AdjustmentRange
MPa kgf/cm2
Flow ControlLimit Range r/minNote 3
Revolution Speed min−1
Weightkg
Fixed Discharge Pump Note 1
Min. Max.Capacitycm3/rev
PressureMPa
kgf/cm2
PZ-2B-*-135E1A-1123
3521
214
2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4
1 to 63 600 2000 36 3.6 to 18.1821
214
PZ-2B-*-145E1A-112
4514
1432 to 1720.4 to 071.42 to 1420.4 to 143.4
1 to 80 600 2000 36 3.6 to 18.1821
214
PZ-3B-*-170E1A-1023
7021
214
2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4
1 to 126 600 1800 60 3.6 to 15.8021
214
PZ-4B-*-100E1A-1023
10021
214
2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4
1 to 180 600 1800 76 3.6 to 15.8021
214
PZ-5B-*-130E1A-102
(Note 2) 3130
21214
2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4
3 to 234 600 1800 100 3.6 to 32.321
214
PZ-6B-*-180E1A-2023
18021
214
2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4
3 to 324 600 1800 160 3.6 to 63.9821
214
PZ-6B-*-220E1A-2023
22021
214
2 to 1720.4 to 071.42 to 1420.4 to 143.42 to 2120.4 to 214.4
3 to 330 600 1500 162 3.6 to 63.9821
214
Pressure Control
Range
MPa kgf/cm2
1 : 2 to 1720.4 to 071.42 : 2 to 1420.4 to 143.43 : 2 to 2120.4 to 214.4
Rated Current mA 800
Coil Resistance Ω 20(20°C)
Hysteresis % 3% max. Note 1
Valve DifferentialPressure
MPa kgf/cm2110 Note 2
Rated Current mA 800
Coil Resistance Ω 20(20°C)
Hysteresis % 3% max. Note 1
Note 1. Value when a Nachi-Fujikoshi specialamplifier is used (with dithering).
Note 2. Pressure differential of pump dischargepressure (valve IN side) and load pressure(valve OUT side).
Note 3. For information about power amplifiers, seepages I-26 through I-37.
PZ-2B/3B/5B
PZ-6B
PZ-4B-100
0M
* *
*
Discharge portT port
Suction port
Specifications
0M
*
*
Discharge portT port
Suction port
0M
*
*
T1 port
T2 port
Discharge port
Suction port
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¡Handling¡Pump Installation and Piping
PrecautionszUse flexible couplings for connect-
ing the pump shaft to the driveshaft, and prevent radial or thrustload from being applied to thepump shaft.
xEccentricity between the drive shaftand pump shaft should be nogreater than 0.05mm, with aneccentric angle error of 1° or less.
cKeep the clamping length of cou-plings and pump shafts at least 2/3the length of the coupling width.
vUse a sufficiently rigid pump mount-ing base.
bSet pump suction side pressure to −0.03 MPa or more (suction port flowvelocity less than 2 m/sec).
nRaise part of the drain piping so it isabove the topmost part of the pumpbody, and insert the return sectionof the drain piping into the hydraulicoperating fluid. Also, observe thevalues in the following table in orderto limit the drain back pressure to0.1 MPa
mMount the pump so the pump shaftis oriented horizontally.
,Use of rubber hose is recommend-ed in order to minimize noise andvibration.
¡Management of Hydraulic OperatingFluid
zUse only good-quality hydraulicoperating fluid with a kinematic vis-cosity during operation within therange of 20 to 200 mm2/sec.Normally, you should use an R&Otype and wear-resistant type of IS-OGV32 to 68 or equivalent.The optimum kinematic viscosityduring operation is 20 to 50mm2/sec.
xThe operating temperature range is5 to 60°C. When the oil tempera-ture at startup is 5°C or less, runthe pump at low pressure until theoil temperature reaches 5°C.
cProvide a suction strainer with a fil-tering grade of about 100µ (150mesh). Provide a return line filter of grade20µm or less on the return line tothe tank. (When the pump is usedat a high pressure of 14 MPa orgreater, a filter of 10µm or less isrecommended.)
vManage hydraulic operating fluid socontamination is maintained atclass NAS10 or lower.
bUse hydraulic operating fluid whenthe operating ambient temperatureis in the range of 0 to 60°C.
¡Startup PrecautionszBefore starting up the pump, fill the
pump body with clean hydraulicoperating fluid through the lubrica-tion port.
xCheck to make sure that the rotationdirection of the pump is the same asthe rotation direction indicated by thearrow on the pump body.
cAir entering the pump or pipes cancause noise or vibration. At startup,set the pump discharge side to ano-load state, and operate thepump in the inching mode toremove any air that might be in thepump or pipes.
vEquip an air bleed valve in circuitswhere it is difficult to release airbefore startup. (See "IP Pumps" onpage C-13.)
bTo enable superior pressure andflow control, loosen the air ventwhen starting up the pump in orderto release any air, and fill the insideof the solenoid with hydraulic oper-ating fluid. You can change theposition of the air vent by rotatingits cover.
nBefore adjusting the manual adjust-ing screw from the first time orwhen there is no input current tothe valve due to electrical malfunc-tion or some other reason, you cancontrol pump pressure and flowrate by rotating the manual adjust-ing screw. Normally, the manualadjusting screw should be returnedcompletely to its original positionand secured with the lock nut.
Model No. Oil Amount cm3
PZ-2B 650
PZ-3B 1000
PZ-4B 1800
PZ-5B 2200
PZ-6B 3000
Understanding Model Numbers
Item
Model No.PZ-2B
3BPZ-4B
5BPZ-6B
Pipe Joint
Size
At least
1/2"
At least
3/4"At least 1"
Pipe I.D. At least φ12 At least φ17 At least φ22
Pipe Length 1 m or less 1 m or less 1 m or less
Pressure adjustment range (See specifications.) 1, 2, 3
Control mechanism EA: Load response control
Mounting method B: Flange type mountingA: Foot type mounting
Fixed discharge pump capacity (cm3/rev) 3.5 to 64 (See IP pump C-1.)
Variable pump capacity (cm3/rev) 35, 45, 70, 100, 130, 180, 220
Pump size 2, 3, 4, 5, 6
PZ Series Piston Pump
Design number 11: PZ-2B, 2A10: PZ-3B to 5B20: PZ-6B
Auxiliary symbol
PZ – – – –3 B 10 70 E 2 A 10
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Installation Diagram
Suction port
Key width6.3+0.015
–0.010
Drain portRc 1/2
T portRelief valve pressure adjusting screwRc 3/8
4-M10x16
Discharge port 23
SAEJ518b-3/4
Lubrication port
Connecting cord diameter 8 to 10
Manual pressure adjusting screw
Air vent
Manual flow rate adjusting screw
Air vent
P portRc 1/4
Suction portSAEJ518b-11/4
4-M10x16
Note
:aNo
te:b 10
1.6
53338
6
(Suction port position dimension)
15
88 60184
222425
47.5
22
66
146172
6510
28
175
13
72163117
16919
2234
135
30.2
58.7
28φ
φ
φ
0 –0.0
51φ
Suction portSAEJ518b-2
Lubrication port
4–M10x25
Manual flow rate adjusting screw
Manual pressure adjusting screwAir vent
T port RC1/2
(PT1/2)
Discharge port 23SAEJ518b-1
Relief valve pressure adjusting screw
Key width 9.53 0–0.015
Drain port G3/4
Suction port
4–M12x20
825223
347
257 (Suction port position dimension)278
52.4
26.2
9081
55 10
152.
4
38.1
42.2
91
153
100
4–21200
161.6
161.
6
204
205
77.8
48
42.9
φ
φ
0 –0.0
30 –0
.15
φ
φ0 –0
.05
Key width7.94 0
–0.05
DR portRc3/4 (PT3/4)Lubrication
port
Relief valve pressure adjusting screw
Manual flow rate adjusting screw
4-M10x16Discharge port 23
SAEJ518b-1
T port (Rc 1/2)
Air vent
Manual pressure adjusting screw
Air vent
Suction port
SAE J518b-1 1/2
P portRc 1/4
4– φ22
Connecting cord diameter 8 to 10
4-M10x16
Suction port configuration
34.9
38.5
548
58219
225 (Suction port position dimension)
258
85
52.4
26.2
66
459.5 (MAX)
165.
1
224.6137
224.
6
265
234
(MA
X)
181
124
90
2658
168.
519
2
148
36
7038
0 –0.0
51φ
φ 0 –0
.040
φ
φ
φ
PZ-2B-3545
PZ-3B-70
PZ-4B-100
Notea b
Single Pump 0φ22.23 −0.021
024.9 −0.5
Double Pump with Fixed Flow IP 0φ25.385 −0.025
027.85 −0.25
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Air ventManual pressure adjusting screw
Relief valve pressure adjusting screw
T2 port Rc 3/8
Lubrication port
Key width14
0–0.018
Air vent
4-M12x20 Discharge port 28SAEJ518b-11/2
P portRc 1/2
4- 22
T1 port Rc 3/4
Drain portG1 (PF1)
Manual flow rate adjusting screw
Suction portSAEJ518b-3
4-M16x24
70
36
50
165.
1
53.5
560
90123
317361
591
Suction port
37888
12
74
99
333 (Suction port position dimension)
106.
4
61.9
70
224.
6
224.6
(265
)
221
245(287
)
195
194
186131241
(265)
φ
φ
φ
+0.
021
+0.
008
φ
φ0 –0
.040
PZ-6B-180220
Air vent
Manual pressure adjusting screw
Manual flow rate adjusting screw
4-M12x20Discharge port 28SAEJ518b-11/2
T port Rc3/4
Drain port G3/4
Key width11.113 0
–0.051
Lubrication port
4- 22
Suction portSAEJ518b-21/2
P portRc 1/2
Air vent
Connecting cord diameter 8 to 10 Relief valve pressure adjusting screw
Lubrication port
4-M12x2050.8
88.9
60
110224.6(265)
224.
6(2
65)
155
24528
7
175
220165
44.4
549
.428
165.
1
667
25 10
100
268 (Suction port position dimension)
35
70
36
526 (MAX)
Suction port
313
252
87
90
φ0 –0
.040
0 –0.2
5
0 –0.0
51φ
φ
φ
φ
PZ-5B-130
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Input current mA Input current mA
0 200 400 600 1000800
40
20
0
60
80
100
PZ-2B-
PZ-2B-45
E3A
E2A
E1A
PZ-2B-35
3545
0 200 400 600 1000800
50
0
150
100
PZ-3B-70
Input current mA
0 200 400 600 1000800
50
0
200
150
100
PZ-4B-100
Input current mA Input current mA
0 200 400 600 1000800
100
0
200
300
PZ-5B-130
0 200 400 600 10008000
350
200
100
300
PZ-6B-180/220
Input current mA
0 200 400 600 1000800
71.47
0
21214
14143
Input Current–Discharge Pressure Characteristics
Dis
char
ge r
ate
Q r
/min
Dis
char
ge r
ate
Q r
/min
Dis
char
ge r
ate
Q r
/min
Dis
char
ge p
ress
ure
MP
a (k
gf/c
m2 )
Dis
char
ge r
ate
Q r
/min
Dis
char
ge r
ate
Q r
/min
Discharge pressure P MPakgf/cm2
0 7 14 2171.4 143 214
20
30
10
0
50
505560
60708090
65
100
Overall efficiency η
Volume efficiency ηv
1500min–11800min
–1
PZ-2B-35
Input Lin
Discharge rate Q 1800min–1
1500min–1
Discharge pressure P MPakgf/cm2
0 7 14 2171 143 214
203040506070
100
5040
160180
60708090
140
100
Overall efficiency η
Volume efficiency ηv
Discharge rate Q
1500min–11800min
–1
PZ-4B-100
Input Lin
1800min–1
1500min–1
Discharge pressure P MPakgf/cm2
0 7 14 2171 143 214
406080
100120140
200
5040
300330
60708090
270
100
Overall efficiency η
Volume efficiency ηv
Discharge rate Q
1500min–11800min
–1
PZ-6B-180
Input Lin
1800min–1
1500min–1
Discharge pressure P MPakgf/cm2
0 7 14 2171 143 214
406080
100120140
200
5040
300330
60708090
270
100
Overall efficiency η
Volume efficiency ηv
Discharge rate Q
1200min–11500min
–1
PZ-6B-220
Input Lin
1500min–1
1200min–1
Discharge pressure P MPakgf/cm2
0 7 14 2171 143 214
20406080
100
0
5040
200220240
60708090
180
100
Overall efficiency η
Volume efficiency ηv
Discharge rate Q
1500min–1
1800min–1
PZ-5B-130
Input Lin
1800min–1
1500min–1
Discharge pressure P MPakgf/cm2
0 7 10.5 1471.4
3.535.3 107 143
20
30
10
0
50
657075
60708090
80
100
Overall efficiency η
Volume efficiency ηv
1500min–1
1800min–1
PZ-2B-45
Input Lin
Discharge rate Q 1800min–1
1500min–1
Discharge pressure P MPakgf/cm2
0 7 2171.4 214
14143
20304050
100
50
100110120
60708090
130
100
Overall efficiency η
Volume efficiency ηv
1500min–1
1800min–1
PZ-3B-70
Input Lin
1800min–1
1500min–1
Effi
cien
cy
η,ηv
%D
isch
arge
rat
e Q
r/m
in
Effi
cien
cy
η,ηv
%D
isch
arge
rat
e Q
r/m
in
Effi
cien
cy
η,ηv
%D
isch
arge
rat
e Q
r/m
in
Effi
cien
cy
η,ηv
%D
isch
arge
rat
e Q
r/m
in
Effi
cien
cy
η,ηv
%D
isch
arge
rat
e Q
r/m
in
Effi
cien
cy
η,ηv
%D
isch
arge
rat
e Q
r/m
in
Effi
cien
cy
η,ηv
%D
isch
arge
rat
e Q
r/m
in
Inpu
t Lin
kW
Inpu
t Lin
kW
Inpu
t Lin
kW
Inpu
t Lin
kW
Inpu
t Lin
kW
Inpu
t Lin
kW
Inpu
t Lin
kW
Performance Curves Typical characteristics at hydraulic operating fluid kinematic viscosity of 32 mm2/s
Input Curren−Discharge Rate Characteristics
General Performance
A_Piston(P35-41)_E.q 03.11.20 0:44 PM Page 39
A
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Pisto
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Cross-sectional Drawing
PZ-2B-35E*A-1045
PZ-3/5B-*E*A-10
List of Sealing Parts
List of Sealing Parts
Part No. Part Name
1234567891011121314151617181920212223
BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderGasketSpring CSpring SControl pistonSleeveNeedleKeyNutRetainerPlugBall bearing
Part No. Part Name
2425262728293031323334353637383940414243444546
Needle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringO-ringBackup ringBackup ringPinScrewScrewScrewExpander plugNameplateCAUTION plateSpring holderGuideLubrication port plateConnectorO-ring
Part No. Part Name
1234567891011121314151617181920212223
BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust plateSeal holderGasketSpring CSpring SControl pistonEnd plugGuide screwThrust bushSpring holderRetainerNeedleKey
Part No. Part Name
242526272829303233343637383940414243444546474849
PlugPinConnectorNutBall bearingNeedle bearingOil sealSnap ringSnap ringSnap ringO-ringO-ringO-ringO-ringO-ringBackup ringBoltScrewExpander plugExpander plugPinO-ringPlateScrew
*Not available through retail sources. Consult your agent for more informa-tion.
*Not available through retail sources. Consult your agent for more information.
Part No. Part NamePZ-3B PZ-5B
RemarksSize Q'ty Size Q'ty
13 Gasket * 1 * 1 3 Bond30 Oil seal TCN-456812 1 TCN-608212 1 N. O. K36 O-ring 1B-G95 1 1B-G125 1 JIS B 240137 O-ring 1B-P21 2 1B-P21 2 JIS B 240138 O-ring 1B-P12 1 1B-P16 1 JIS B 240139 O-ring 1B-P34 1 1B-P42 1 JIS B 240140 O-ring 1B-P7 2 1B-P7 2 JIS B 240141 Backup ring T2-P12 1 T2-P16 1 JIS B 2407
47 O-ring 1B-G90 1 1B-G85 1 JIS B 2401
Part No. Name Q'ty Size Remarks13 Gasket 1 * 3 Bond25 Oil seal 1 TCN-305011 N. O. K29 O-ring 1 1B-G70 JIS B 240130 O-ring 1 1B-P26 JIS B 240131 O-ring 1 1B-P21 JIS B 240132 O-ring 1 1B-P11 JIS B 240133 Backup ring 1 T2-P26 JIS B 240734 Backup ring 1 T2-P11 JIS B 240746 O-ring 2 1B-P5 JIS B 2401
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PZ-4/6B-*
List of Sealing Parts
Foot Mounting Kit
Piping Flange Kit
Part No. Part NamePZ-4B PZ-6B
RemarksSize Q'ty Size Q'ty
30 Oil seal TCN-507212 1 TCN-659013 1 N. O. K
34 O-ring 1B-G85 1 1B-G85 1 JIS B 2401
35 O-ring 1B-G105 1 1B-G135 1 JIS B 2401
36 O-ring 1B-G155 1 1B-G200 1 JIS B 2401
37 O-ring 1B-G50 1 1B-G60 1 JIS B 2401
38 O-ring 1B-P36 1 1B-P41 1 JIS B 2401
39 O-ring 1B-P16 1 1B-P16 1 JIS B 2401
40 O-ring 1B-P21 3 1B-P21 3 JIS B 2401
41 O-ring 1B-P9 1 1B-P10 1 JIS B 2401
42 O-ring 1B-P8 5 1B-P8 8 JIS B 2401
43 Backup ring T2-P16 1 T2-P16 1 JIS B 2407
Flange Kit model No.Applicable Pump
Model No.
IN Flange
Flange Part No. Bolt Washer O-ring
IHF -4-T-20 PZ-2B-35/45 IH03J-100100 1 TH-10 × 55 4 WS-B-10 4 1B-G40 1
IHF -5-T-20 PZ-3B-70 IH03J-100120 1 TH-12 × 55 4 WS-B-12 4 1B-G50 1
PZF -4-T-10 PZ-4B-100 IH03J-100160 1 TH-12 × 60 4 WS-B-12 4 1B-G60 1
IHF -7-T-10 PZ-5B-130 IH03J-100200 1 TH-12 × 60 4 WS-B-12 4 1B-G75 1
PZF -6-T-10 PZ-6B-180/220 IH03J-100240 1 TH-16 × 75 4 WS-B-16 4 1B-G85 1
OUT FlangePlug
Flange Part No. Bolt Washer O-ring
IH03J-100060 1 TH-10 × 50 4 WS-B-10 4 1B-G30 1 TPHA-1/4 1
IH03J-100080 1 TH-10 × 50 4 WS-B-10 4 1B-G35 1 TPHA-1/4 2
IH03J-100080 1 TH-10 × 50 4 WS-B-10 4 1B-G35 1 TPHA-1/4 1
IH03J-100120 1 TH-12 × 60 4 WS-B-12 4 1B-G50 1 TPHA-1/4 1
IH03J-100120 1 TH-12 × 60 4 WS-B-12 4 1B-G50 1 TPHA-1/4 1
Note 1. See page C-11 for dimensions.2. O-ring 1B/B-** refers to JIS B2401-1B.3. See page C-11 for details on tightening torque.
Part No. Part Name
313233343536373839404142434445464748495051525354
Snap ringSnap ringSnap ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringO-ringBackup ringOrificeScrewPlugPinBoltPlugPlateWasherBoltEye boltElectro-hydraulic proportional valve
Part No. Part Name
123456789
101112131415161718192021222324252627282930
BodyCaseShaftCylinder barrelValve platePistonShoeShoe holderBarrel holderSwash plateThrust bushSeal holderSleeveSpring CSpring SControl pistonEnd plugGuide screwSpring holderThrust plateRetainerNeedleKeyPlugPinOrificeNutBall bearingNeedle bearingOil seal
Pump Model No. Mounting Model No.
PZ-2B IHM-44-10
PZ-3BPZ-5BPZ-6B
IHM-55-10
PZ-4B PZM-4-10
Note: See pages C-12 and A-34 for information about mounting methods.
A_Piston(P35-41)_E.q 03.11.20 0:44 PM Page 41
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PZH SERIES HIGH PRESSURE TYPEVARIABLE DISPLACEMENT AXIAL PISTON PUMP
PZH Series High-Pressure Variable Volume Piston Pump
28,40cm3/rev41MPa
Features
Specifications
qqLong, trouble-free service life
Swash plate design ensures long,trouble-free bearing life.
wwLow-noise, even in thehigh pressure range
High-rigidity semi-cylindrical swashplate provides low-noise operation,
even in the high-pressure range.
eeFemale piston
Female piston increases sealingbetween the shoe and piston forenhanced resistance to contamina-tion.
rrHigh-precision proportion-al flow control
This load sensitive type pump pro-vides precision low flow rate controlfrom zero load.
¡Handling¡Pump Installation and Piping
PrecautionszUse flexible couplings for connect-
ing the pump shaft to the driveshaft, and minimize radial or thrustload from being applied to thepump shaft.
xEccentricity between the drive shaftand pump shaft should be nogreater than 0.05mm, with surfacevibration n0.09 or less.
cMake sure the clamping length ofcouplings and the hydraulic pumpshaft is long enough to allow theentire length of key fits in the cou-pling width.
vUse a sufficiently rigid pump mount-ing base.
bMake the pump suction side pres-sure is at least −0.03MPa at peaktimes, and at least −0.01MPa nor-mally.
nRaise part of the drain piping so it isabove the topmost part of the pumpbody, and insert the return sectionof the drain piping into the hydraulicoperating fluid tank. In order toobtain a drain back pressure of0.2Mpa or less, the drain pipeshould have an inside diameter ofat least φ17 and should be less thanone meter long.
¡Management of Hydraulic OperatingFluid
zUse only good-quality hydraulicoperating fluid with a kinematic vis-cosity during operation within therange of 20 to 200 mm2/sec. Normally, you should use an R&Otype and wear-resistant type of ISOVG46 or equivalent. The optimumkinematic viscosity during operation is20 to 50 mm2/sec.
xThe operating temperature range is 10to 80°C. When the oil temperature atstartup is 10°C or less, run the pump atlow pressure until the oil temperaturereaches 10°C.
cProvide a suction strainer with a fil-tering grade of about 100µm (150mesh). Provide a return line filter of grade20µm or less on the return line tothe tank. (When the pump is usedat a high pressure of 14 MPa orgreater, a filter of 10µm or less isrecommended.)
vManage the hydraulic operating fluidso that contamination is maintained atclass NAS9 or lower.
bUse the hydraulic operating fluidwhen the operating ambient tem-perature is in the range of −20 to20°C.
¡Startup PrecautionszBefore starting the pump, fill the
pump body with clean hydraulicoperating oil through the drain portor the air bleeder port. Be sure toperform the air bleed operationfrom the air bleeder port before andimmediately after running thepump.
xThis pump does not have a pressurecompensation mechanism (no full cut-off). Be sure to install a relief valve in thecircuit.
cCheck to make sure that the pumprotation direction is clockwise whenviewed from the end of the shaft.
vAir entering the pump or pipes cancause noise or vibration. At startup,set the pump discharge side to ano-load state, and operate thepump in the inching mode toremove any air that might be in thepump or pipes.
bTo enable proper flow control whenusing a proportional flow controlmodel, loosen the air vent of the elec-tro-hydraulic proportional control valveto bleed air from the valve immediate-ly after operation. You can change theposition of the air vent by looseningthe coil cover. When there is no inputcurrent to the valve, you can manuallycontrol the flow rate with the manualflow rate adjusting screw. Normally,the manual adjusting screw should bereturned completely to its originalposition and secured with the lock nut.
Model No.
Pump
Capacity
cm3/rev
Rated Voltage MPa
kgf/cm2
Maximum WorkingPressure
MPakgf/cm2
Revolution Speed min −1
Weight
kgMin. Max.
PZH-2B-28**5***-10 2834.3
350
41.0
418500 1900 28
PZH-2B-40**5***-10 4034.3
350
41.0
418500 1900 29
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Understanding Model NumbersStandard typeConstant horsepower control type (L)
Design number
Revolution speed A: 1500min–1, B: 1800min–1
Rated voltage 5: to 35.0MPa 357kgf/cm2
Constant horsepower 5: 5.5 kW, 7: 7.5kWaxial input 11: 11 kW, 15: 15.5kW
18: 18.5kW, 22: 22 kW30: 30 kW, 37: 37 kW
Control mechanism L: Constant horsepower control
Pump capacity 28: 28cm3/rev, 40: 40cm3/rev
Mounting method A: Foot type mounting B: Flange type mounting
PZH Series Variable Piston Pump
Pump size 2
PZH – – –2 B 28 L 5 A 10
Option typeElectro-hydraulic proportional control type (EF)
Discharge pressure MPa
P-Q characteristics
Flo
w r
ate
/m
inr
Discharge pressure MPa
P-Q characteristics
Flo
w r
ate
/m
inr
Input Current – Discharge Rate Characteristics
Proportional valve input current mA
Dis
char
ge r
ate
/m
inr
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PZH-2B-28EF5**-1040
Drain port
G3/4
Discharge port shape
Discharge port
Auxiliary View XSAEJ518b–3/4 (6000psi)
4-M10x18
44 29.8
15°
3.5
109 90138 (MAX)
8714
4
141.3 (MAX)F
23.8
50.8 φ19
+0.10
+0.
40
φφ
PZH-2B-28L5**-1040
(Suction, discharge port locations)
4-M12x21
Suction portSAEJ518b–11/2
Drain port (G3/4)Torque adjusting screw
Pump capacity adjusting screw
10
1.6h
8–0
.054
0
E D
9.7A
C B
102
F
G
103.2135195
103.
213
5
4 to 14.5
69.9 X
35.8
140.
5 (D
rain
por
t)
φ38
Key width6.375 –0.025
0
φ
φ
Drain port
G3/4
Discharge portSAEJ518b–3/4 (6000psi)
44 29.8+0.1
0
+0.
4015°
3.5
109 90
Auxiliary View X
141.3 (MAX) 165
151
φφ
Suction port configuration
4-M12x21
Suction portSAEJ518b–11/2
Torque adjusting screwPump capacity adjusting screw
Air vent
Manual flow rate adjusting screw
4-M10x18
Key width6.375 –0.025
0
–0.0
250
T port (Rc 1/4)
103.2135195
128
103.
213
514
0.5
(Dra
in p
ort)
9.7
A
X
CB
43 (Air bleeder port)
102 (Drain port)
19
D E 101
.6h6
H
J
G
I
K
50.8
23.8
30
18
4 to 14.5
69.9
35.8F
φ38
φ
φ
φ
Installation Dimension Drawings
Pump Model No. A B C D E F G
PZH-2B-28L5**-10 67 45 4 φ22.23 0−0.025 25.08 0−0.25 175 233
PZH-2B-40L5**-10 83 60 5 φ25.385 0−0.025 27.85 0−0.25 184.5 242.5
Dimension Table
Pump Model No. A B C D E F G H I J K
PZH-2B-28EF5**-10 67 45 4 φ22.23 0−0.025 25.08 0−0.25 175 263 202 300.5 144 16.5
PZH-2B-40EF5**-10 83 60 5 φ25.385 0−0.025 27.85 0−0.25 184.5 272.5 211.5 310 153.5 7
Dimension Table
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19.614.79.84.9 24.5 29.4 34.30
0
10
20
30
40
50
60
20015010050 250 300 350
Pressure MPa (kgf/cm2)
A22
A18
A15
A11
A7
A5
Flo
w r
ate
/m
in.
r
Pressure MPa (kgf/cm2)
35030025020015010019.614.79.84.9 24.5 29.4 34.3
60
50
40
30
10
00
20
50
B22
B18
B15
B11B7
B5F
low
rat
e /
min
.r
Pressure MPa (kgf/cm2)350300250200150100
19.614.79.84.9 24.5 29.4 34.3
60
50
40
30
10
00
20
50
A22
A18A15
A11
A7A5
70
80
Flo
w r
ate
/m
in.
r
100 150 200 250 300 350
Pressure MPa (kgf/cm2)
19.614.79.84.9 24.5 29.4 34.3
60
50
40
30
10
00
70
20
50
80
B22
B18
B15
B11
B7
B5
B37
B30
Flo
w r
ate
/m
in.
r
19.614.79.84.9 24.5 29.4 34.355
0
60
65
70
75
80
85
20015010050 250 300 350
Pressure MPa (kgf/cm2)
1800min-1
1500min-1
Noi
se le
vel d
B(A
)
Pressure MPa (kgf/cm2)
35030025020015010019.614.79.84.9 24.5 29.4 34.3
85
80
75
70
60
055
65
50
1800min-1
1500min-1
Noi
se le
vel d
B(A
)
Performance Curves Typical Characteristics at a Hydraulic Operating Fluid Kinematic Viscosity of 46 mm2/s
Load Pressure - Flow Rate Characteristics
PZH-2B-40
PZH-2B-28*5A**-10Revolution Speed :1500min−1
Symbol : A**
PZH-2B-28*5B**-10Revolution Speed :1800min−1
Symbol : B**
Noise CharacteristicsPZH-2B-28
PZH-2B-40*5A**-10Revolution Speed :1500min−1
Symbol : A**
PZH-2B-40*5B**-10Revolution Speed :1800min−1
Symbol : B**
Input (kW)PZH-2B-28 PZH-2B-40
4P-50Hz 4P-60Hz 4P-50Hz 4P-60Hz
5.5 A5 B5 A5 B5
7.5 A7 B7 A7 B7
11 A11 B11 A11 B11
15 A15 B15 A15 B15
18.5 A18 B18 A18 B18
22 A22 B22 A22 B22
30 − − − B30
37 − − − B37
Constant Horsepower Input and Symbols
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Cross-sectional Drawing
Foot Mounting Kit
List of Sealing PartsPart
No.Name Q'ty
Part Number
PZH-2B-28 PZH-2B-40
1 Oil seal 1 * *
2 O-ring 4 *
3 O-ring 1 *
4 O-ring 1 *
5 O-ring 2 *
6 O-ring 1 *
7 O-ring 1 *
8 O-ring 1 *
9 Backup ring 1 *
10 Backup ring 1 *
11 Backup ring 1 *
12 Packing 6 *
13 Packing 6 *
14 Packing 2 *
Kit Model No.Applicable Pump
Model No.
Accessories Dimensions (mm) Weight
kgBolt Q'ty Washer Q'ty I J
PZM-2-H-10PZH-2B-28
TB-12×35 4 WP-10 492.5 48
12.0PZH-2B-40 107.5 63
*These seal products are not available through retail channels. Fordetails, consult your agent.
PZH-2B-*** -10
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