EATON JPVB Back to Back Piston Pumps E-PUIO-CC003-E June 20152

Table of Contents

Description Page No.

General Introduction 3Specifications 3Model Code 4Performance 5Controls 6Dimensions 7Application Guidance 8-9

EATON JPVB Back to Back Piston Pumps E-PUIO-CC003-E June 2015 3

General Introduction

Specifications

Eaton’s JPVB series of open circuit axial piston pumps are designed for high efficiency, accurate control and low noise. Currently available in an 112cc displacement Back to Back layout, the JPVB is rated for 350bar and incorporates control features such as Negative Flow Control, total horsepower control and variable horsepower control. Well suited to enable the critical control and productivity requirements of excavators in 20 to 25 ton operating range this offering has the flexibility to be configured in a Positive Flow Control arrangement for alternative excavator models or other applications that require a product that delivers great value and power in an industry standard envelope. For other options and applications, please contact your local sales representative.

Features• Standard displacement 112cc per pump and

90 -117cc displacement adjustable• Variable/Total/Constant Power Control• Negative/Positive Flow Control• Proportional/Inverse Proportional

EPPR (Electronic Proportional Pressure Reducing) valve• Pilot Pressure Pump 10cc

Benefits• Low noise • Low fluctuations• Fast response and recovery• Accurate horsepower control• Low hysteresis• High efficiencies

Applications• Excavator• Rotary drilling• Crawler Crane

Units JPVB112

Displacement cc/r 112Pressure Continuous bar 345 Peak 385Speed Rated rpm 2360 Maximum 2460 Minimum 600Torque Nominal N.m 588Power Nominal kW 125Mass kg 136

EATON JPVB Back to Back Piston Pumps E-PUIO-CC003-E June 20154

Model Code

1 2 3 4 Pump series

JPVB Variable Displacement, Open Circuit, Back-to-Back, Axial Piston Pump

5 6 7 Displacement

112 112 cc/rev

8 Input shaft rotation

R Right Hand Rotation (CW)L Left Hand Rotation (CCW)

9 10 Front mounting & input shaft

02 14T Input Spline (JIS B1603)*Other options need consult.For mounting flange, please refer to dimensions sheet.

11 12 Suction port size & location

AA Side Port Suction-(SAE J518) 4-Bolt Split Flange Standard Pressure Series (CODE 61), 60 mm Dia Port

*Other options need consult.

13 14 Delivery port size & location

AA Side Port; Delivery-(SAE J518) 4-Bolt Split Flange Standard Pressure Series (CODE 62), 19 mm Dia Port

*Other options need consult.

15 Drain port size & location

1 Right Side Drain Port, JIS B 2351 O-Ring Port (JIS B 2351 Threads: G 3/4

16 Diagnostic pressure ports0 No Diagnostic Port1 As Per JIS Std, Diagnostic Port-G 1/4

17 Horsepower control

2 Total Horsepower Control9 Variable Horsepower Control + Total

Horsepower Control

18 Flow control

P Positive Flow ControlN Negative Flow Control

19 Horsepower setting

1 588 N-m Max. Torque Setting2 529 N-m Max. Torque Setting3 516 N-m Max. Torque Setting4 538 N-m Max. Torque Setting

20 EPPR valve control

A 24V AMP Connector, ProportionalB 24V Deutsch Connector, ProportionalC 24V AMP Connector, Inverse ProportionalZ No EPPR Valve Control

21 Pilot Pressure Pump

1 Gear Pump 10cc

22 Pilot pressure pump mounting1 4 Bolt Mount on PCD of 112mm

23 Shaft seal

A Standard Nitrile Shaft Seal B Standard Viton Shaft Seal

24 25 26 Pump special features

000 None097 Max displacement 97cc/r112 Max displacement 112cc/r113 Max displacement 113cc/r

27 28 Paint

CD Blue Primer Per Spec 209-13CD

29 Identification/Packaging

0 Eaton Standard

30 Design code

A First Design

JPVB

21 3 4 9 10

02

11 12

AA

13 14

AA

17 18

9N

27 28

CD

8

R

15

1

16

1

19

1

21

1

22

1

30

A

29

0

20

A

23

A112

65 7

112

2524 26

EATON JPVB Back to Back Piston Pumps E-PUIO-CC003-E June 2015 5

Input Power vs Delivery Pressure @ 50oC, 112cc displacement, and 1.0 bar suction pressure

Input Torque vs Delivery Pressure @ 50oC, 112cc displacement, and 1.0 bar suction pressure

Performance

0

20

40

60

80

100

120

140

160

180

200

0 50 100 150 200 250 300 350

Inpu

t Pow

er (k

W)

Delivery Pressure-Pd-(bar)

1000 RPM2000 RPM2360 RPM

0

100

200

300

400

500

600

700

800

0 50 100 150 200 250 300 350

Inpu

t Tor

que

(N.m

)

Delivery Pressure-Pd-(bar)

1000 RPM2000 RPM2360 RPM

EATON JPVB Back to Back Piston Pumps E-PUIO-CC003-E June 20156

Controls

Horsepower control

Flow control

Code Control Type Control Curve Function

2 Total Horsepower Control

Q

P1

P2

• Constant torque is maintained by self-adjusting swash angle of the pump based on the change in delivery pressure of either of the pump.

• Total horsepower is maintained by adjusting the horsepower of one pump based on the delivery pressure of another pump.

9 Variable Horsepower Control + Total Horsepower control

Q

P1

P2 Q

P

Pf

• Besides total horsepower control, variable horsepower control can be achieved by supplying variable pilot pressure using variable electric current.

Code Control Type Control Curve Function

N Negative Flow Control

Q

Pi

• Pump flow can be controlled by pilot pressure. Pump flow is inversely proportional to the pilot pressure.

2N Total Horsepower Control + Negative Flow Control

9N Variable Horsepower Control + Total Horsepower Control + Negative Flow Control

PfP2

PI Pf

PI P2 GI

DESTROKEDESTROKE

40 BAR

P2Pf PI Pf

GIP2PI

DESTROKEDESTROKE

40 BAR

EATON JPVB Back to Back Piston Pumps E-PUIO-CC003-E June 2015 7

Dimensions

Size L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 D1 D2 D3

112cc 231.7 115.8 141.5 78.3 8.2 265.2 166.8 35 363.6 41 583.7 28 606.7 220.5 103.5 160 224 22

Pressure Port Dimensions

Size D1 D2 D3 D4 D5 D6 D7 T1- Depth

112cc 50.8 25.4 23.8 11.9 62 19 234.2 M10 X 1.5 - 16

Suction Port Dimensions

Size D8 D9 D10 D11 D12 T1- Depth

112cc 88.9 44.5 50.8 25.4 60 M12 X 1.75 - 16

L4

CASE 1

Suction

Suction

Delivery

Delivery

CASE 2

Direction of Rotation

(Viewed from shaft end)

Clockwise

Counter Clockwise

L11

L12

L13

L14

L8

L10

L6L7

L9

L15

D1

L5

L4L1

L3L2

D2

4X D3

4X 30 ~

D9

D8

D11

D10

n D12 T2D7D5

D1

D2

D4

D3

n D6

T1

EATON JPVB Back to Back Piston Pumps E-PUIO-CC003-E June 20158

Application Guidance

Mounting Direction and Case Drain Piping• The pump should be mounted in horizontal direction.• The pump should be install in such a way that case drain is

on side or top. The uppermost drain port should be used for piping.

• The case drain pipe size should be equal or larger to pump drain port size.

Filtration• Install a 10µm filter in return line and 80 to 150 mesh strainer

in suction lines to ensure hydraulic oil cleanliness level of ISO 4406 20/18/15 (NAS 1638 Class 9).

Fluid

Connection of Driving Shaft• Use a flexible coupling for connection of the pump drive shaft

with an engine flywheel or an electric motor shaft.• There should be no axial and radial loads on the drive shaft.• The shaft to coupling alignment should be parallel within

± 0.03 mm (± 0.0012 inches).

Starting• Use case drain connection to fill the pump with hydraulic oil

before operating the pump.

Case Drain pressure• Maximum allowable continuous case pressure is 1 bar and

Maximum allowable peak case pressure is 4 bar.

Units

Recommend Type ISO VG 46Viscosity - Optimal Cst 16-40 Operating Continuous 10-430 Range Intermittent 6-2100Hydraulic Oil Cleanliness ISO 4406 (20/18/15) minimum requirement (NAS Class 9)

EATON JPVB Back to Back Piston Pumps E-PUIO-CC003-E June 2015 9

Application GuidanceEaton power your 20-25 ton excavator

Main control valves

Specifications

• Rated Flow (spool size): 300 LPM (28mm, negative flow control)

• Rated Pressure: Up to 355 bar• Pilot Pressure: 50 bar• Machine Weight: 20-25 ton

Joysticks and pedals

Specifications

• Rated Flow (spool size): 8~30 LPM• Output Pressure: 0~40 bar• Maximum inlet pressure: 50 bar for

aluminum, 100 bar for cast iron

JMV track drive motors

Specifications

• Rated Flow (spool size): 147, 168, 176 cc/r

• Rated Pressure: 360 bar, intermittent to 430 bar

• Torque: Up to 46433 N.m @ low speed, 28263 N.m @ high speed

• Machine Weight: 20-25 ton

JMF swing drive motors

Specifications

• Rated flow (spool size): 151 cc/r• Rated pressure: 280 bar, intermittent

to 336 bar• Torque: 9977 N.m.• Machine weight: 22 ton

Hose rupture valve and pilot pressure valve

CT4 CT3

CT2CT1

E E

VV

PILOTDRAIN

BLEED

C

2.1 2.2 2.3

3.14.1

1.1

G1/4 G1/4 G1/4

G3/8

G3/8

G1/45.1

G1/2

A B

T

ACC P

Pm

EATON JPVB Back to Back Piston Pumps E-PUIO-CC003-E June 201510

Notes

EATON JPVB Back to Back Piston Pumps E-PUIO-CC003-E June 2015 11

Notes

© 2015 EatonAll Rights ReservedDocument No. E-PUIO-CC003-EJune 2015

EatonHydraulics Group USA14615 Lone Oak RoadEden Prairie, MN 55344USATel: 952-937-9800Fax: 952-294-7722www.eaton.com/hydraulics

EatonHydraulics Group EuropeRoute de la Longeraie 71110 MorgesSwitzerlandTel: +41 (0) 21 811 4600Fax: +41 (0) 21 811 4601

EatonHydraulics Group Asia PacificEaton BuildingNo.7 Lane 280 Linhong RoadChangning District,Shanghai 200335ChinaTel: (+86 21) 5200 0099Fax: (+86 21) 2230 7240