2 C o n t e n t s
HYDRAULIC MOTORS VARIABLE DISPLACEMENT
Design, characteristics and advantages . . . . . . . . . . .3
Efficiency and operating conditions . . . . . . . . . . . . . . .4
Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Dimensions MV series motors . . . . . . . . . . . . . . . . . . . . .7
Dimensions MVSI series motors . . . . . . . . . . . . . . . . . . .9
Dimensions MVA series motors . . . . . . . . . . . . . . . . . . . 11
Displacement control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Options | Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Installation and start-up recommendations . . . . . . .15
Also find the fixed displacement LEDUC motors range in the BENT AXIS HYDRAULIC MOTORS - FIXED DISPLACEMENT catalogue downloadable on www .hydroleduc .com
Complete catalogues available at www.hydroleduc.com
� Models from 5 to 180 cc/rev � Available in DIN and SAE versions � In fixed displacement, special drainless motor.
3D e f i n i t i o n & a d v a n t a g e s
► Main applications � Suitable for use in either open or closed loop circuits � Wheel drives � Track drives � Winches
► Advantages of the LEDUC variable displacement motors � 9 pistons designed for high starting torque and reduced pulsations at low speed � Continuous variation in displacement from Vmax to Vmin (=0) � High operating ratio (5 :1) � Compact size, high weight-power ratio � High speed and high operating pressure � Low noise level � Long service life � 3 choices of displacement control : see page 9 (HPA, H2N, E2N)
► Technical characteristics of LEDUC variable displacement motors
85 115Max. displacement Vmax 28.185.2 79115 .6Min. displacement Vmin 059 .7 040 .1Displacement ratio 5 Vmax / 5 17 cc 23.1 ccMax. continuous operating pressure Pmax 400 bar 400 barMax. peak pressure Pp 450 bar 450 barMax. speed at max. displacement Nmax at Vmax 3900 rpm 3550 rpmMax. speed at min. displacement Nmax at Vmin 6800 rpm 5600 rpmMax. flow absorbed Qmax 331 l/min 408 l/minMax. output power Pmax 220 kW 271 kWMax. output torque at Pmax and Vmax Cmax 54 daN .m 73 daN .m
Currently two models of motor are offered : 85cc/rev and 115 cc/rev. Models to extend the range are currently being developped.
No gears between swashplate androtating barrel, yields reduced noise levels.
High performance bearingsfor long service life.
Sealing designed specificallyto withstand back presssurefrom the motor return drain circuit.
9-piston design, ensuring excellent operatingregularity and constant torque.
By design, the barrel is centered, which avoidsradial stress and thus improves service life.
Mechanical liaison between piston headand motor shaft guarantees there is no separationand thus ensures long service life.
Injection of high pressure on piston headsreduces friction, heating and wear. Maximum and minimum displacement setting via screws.
Displacement controlled by setting piston.Different controls are offered: see page 13.
► Advantages of LEDUC variable motorsHigh quality know-how and materials. The design choices below ensure the reliability and long service life of LEDUC motors.
4
►Preparation of the motor
Bleeding of control device is done automatically during initial commissioning .
►The fluid
LEDUC motors are designed for use with mineral based hydraulic fluid . Using other fluids is possible but may require a modified motor. Please contact us with details of fluid .
Recommended viscosity: � Ideally: between 15 and 400 cSt, � Maximum range: between 5 and 1600 cSt.
►Filtration of the hydraulic f luid
The service life of the motors depends greatly on the quality and the cleanliness of the hydraulic fluid . We recommend minimum cleanliness as follows:
� NAS 1638 class 9, � SAE class 6, � ISO/DIS 4406 class 20/18/15.
For fluids at very high temperatures 194 to 239 °F (90 to 115 °C), we recommend a minimum cleanliness class of 19/17/14 according to ISO 4406 .
►Rotating speeds
Minimum rotating speed to obtain continuous rotation is 200 rpm (however, in certain conditions, the motor can run at speeds as low as 50 rpm). Maximum rotating speed is given for each model of motor.
►Installation posit ions
LEDUC motors are made to operate in all positions (see details on page 15).
►Operating temperatures � As standard, LEDUC motors are fitted with FKM seals (Viton ®).
Operating temperatures: from -13 to 239 °F (-25 à 115 °C). � As an option, HYDRO LEDUC proposes NBR seals, for
operating temperatures from -40 to 176°F (-40 to 80°C).
E f f i c i e n c y a n d o p e r a t i n g c o n d i t i o n s
► Efficiency of the MV, MVA, and MVSI motors
IMPORTANT NOTE: Before start up, ensure the motor is filled with hydraulic fluid: See section on installation and start-up, page 15.
Effic
iency
(%)
50
60
70
80
90
100
Efficiency at 1/3 displacementN = 1000 rpm ISO46 fluid at 25°C (77°F)
0 (1450) (2900) (4350) (5800)
Pressure in bar (psi)Volumetric efficiency (%)Global efficiency (%)
0 100 200 300 4000 (1450) (2900) (4350) (5800)
Pressure in bar (psi)
Effic
iency
(%)
50
60
70
80
90
100
Efficiency at maximum displacementN = 1000 rpm ISO46 fluid at 25°C (77°F)
Volumetric efficiency (%)Global efficiency (%)
0 100 200 300 400
These graphs are given as an indication only; for further information, please contact our Technical Service.
5E f f i c i e n c y a n d o p e r a t i n g c o n d i t i o n s
►Direction of rotation
The motors rotate clockwise or counter-clockwise depending on the direction of hydraulic flow entering the motor.
►Drain pressure
It is essential to drain the motor, T1 and T2, to avoid excessive pressures on the shaft seal. Maximum acceptable internal pressure depends on motor rotation speed.
However, following these guidelines will avoid problems during operation:
� Maximum internal pressure (Int P) regardless of rotating speed (continuous): 4 bar.
� Maximum pressure regardless of rotating speed: 5.5 bar. � The maximum pressure in the motor housing must be greater
than the external pressure (ext P).
Clockwise rotation
(CW)
Counter-clockwise rotation (CCW)
BA
T2
T1 T1
T2
BA
►Acceptable forces applied to motor shaft
Variable motors MV | MVSI | MVA
85 115
Fr daN 1300 1500
Fa N/bar 80 60
Fr
Fa
6 O r d e r c o d e
MV . . . A . . . . . . M2 . . . . . . . . . . . . F To obtain the code for your motor, complete the different parameters 01 to 11 in the table on the left according to the options you require (see table below).01 02 03 04 05 06 07 08 09 10 11
Motor
01 MV MVSI MVA MV MVSI MVA
Displacement02 85 115 85 115 85 115
Mounting flange03 ISO 3019-2, 4 bolts ISO 3019-2, 2 bolts SAE C 4 bolts SAE D 4 bolts A B C
Shaft
04DIN 5480 splined W40 W40 W40 W40 – – W1SAE J744 splined 1½" 17T 12/24 DP 1¾" 13T 8/16 DP – – 1½" 17T 12/24 DP 1¾" 13T 8/16 DP S1
Inlet ports
05 Flange
Rear ● ● ● ● ● ● M0
Side● ● ● ● ● ● N0(–) (–) (–) (–) (–) (–) N1
Drain06 2 2 2 2 2 2 M2 M2 U2
Regulation
07
Automatic high pressure ● ● ● ● ● ● HPA
Hydraulic 2 speeds ● ● ● ● ● ● H2N
Electric 2 speeds ● ● ● ● ● ● E2N
Suitable for use of speed sensor
08Yes ● ● ● ● ● ● 1No ● ● ● ● ● ● 0
Speed sensor
09Yes ● ● ● ● ● ● 1No ● ● ● ● ● ● 0
Flushing valve
10Without ● ● ● ● ● ● SVWith flushing valve (–) (–) (–) (–) (–) (–) VB
Seal11 FKM ● ● ● ● ● ● F
Requires a N1 flange.Legend:● Exisiting model– Not yet existing
(–) Possible on request.
7
27.8
57.2
M12 depth 17 mm
Ø 24
M12 depth 17 mm
Ø 24 27.8
57.2
75
36
37
M16
x 20
0
P
45 0-0.5
77 +1-0.5
M V 8 5
Side flanges SAE 1" 6000 psi
Splined shaft DIN 5480 W40 x 2 x 30 x 18 x 9g
122.9
141.6 32 31
266.5
98
10
86.8
114
15° Ø
116
Ø
140
-0 0.02
196.8
31.8
T1 : M18 x 150
T2 : M18 x 1.5
P
Ø 13.50
127.3
127.3
165
170.8
0
Ø 180
+10
W1
N0Rear flanges SAE 1" 6000 psiM0
►Shaft - code
►Inlet ports - code
Dimensions (in mm) are given only as an indication .
04
05
1.73 (44)
1.10 (28)
7/16
14UN
C-2B
P
(54 ) 0 -0.5
(62 )+1-0.5 2.44 +0.04
-0.02
2.13 0-0.02
Splined shaft SAE J744 17T 12/24DP 1½"S1
8 M V 11 5
39 159.6
102.80
10
285.5
95
111.4
11
9.5
15°
212.9
34 1
45
P
T2 : M18 x 1.5
Ø 17.50
141.4
141.4
190
190
Ø 200
Ø
160
0 -0.02
5
40 +1-0
Ø 24
27.8
57.2
M12 depth 17 mm
90
27.8
57.2
Ø 24
M12 depth 17 mm
M12
x 17
5
37
28
85 +1-0.5
P
45 0-0.5
Side flanges SAE 1"6000 psi
Splined shaft DIN 5480 W40 x 2 x 30 x 18 x 9gW1
N0Rear flanges SAE 1" 6000 psiM0
►Shaft - code
►Inlet ports - code
04
05
Dimensions (in mm) are given only as an indication .
1.42 (36)
2.05 (52)
2.63 (66.70)
5/8"
11UN
C-2B
(75 ) +1-0.50
P2.95 +0.04-0.02
Splined shaft SAE J744 13T 8/16DP 1¾"S1
9
27.8
57.2
M12 depth 17 mm
Ø 24
M12 depth 17 mm
Ø 24 27.8
57.2
75
M16
x 20
0
37
45 0-0.5
36
P155.5 +0.2
-0.9
M V S I 8 5
Side flanges SAE 1" 6000 psi
Splined shaft DIN 5480 W40 x 2 x 30 x 18 x 9g
142
1
16
118.3
187.4
15°
110.5 +0.2-0.4
109.5
122.9
31
.8
86.50
81.50
10
6 19.50
15
PT1 : M18 x 1.5
T2 : M18 x 1.5
224
Ø 21
99
R99
153
260
Ø 19
0 +0 -0.03
W1
N0Rear flanges SAE 1" 6000 psiM0
Dimensions (in mm) are given only as an indication .
►Shaft - code
►Inlet ports - code
04
05
10 M V S I 11 5
122.8 +0.2-0.4
96
84.5
Ø 16
0 Ø
138
Ø
200
0 -0.02
9
202.7
111.4
15°
119
114
23
130.1
34
15 T1 : M18 x 1.5
T2 : M18 x 1.5
P 250
103
R105
Ø 22
164
286
Ø 24
27.8
57.2
M12 depth 17 mm
90
27.8
57.2
Ø 24
M12 depth 17 mm
M12
x 17
5 28
37
167.8 +0.2-0.9
P
45 0-0.5
Side flanges SAE 1" 6000 psi
Splined shaft DIN 5480 W40 x 2 x 30 x 18 x 9gW1
N0Rear flanges SAE 1" 6000 psiM0
Dimensions (in mm) are given only as an indication .
►Shaft - code
►Inlet ports - code
04
05
11
1.09(27.8)
2.25
(57.2
) Ø 0.94(24)
7/16 14UNC-2B
1.09(27.8)
7/16 14UNC-2B
Ø 0.94(24)
2.95(75)
2.25
(57.2
)
1.73 (44)
1.10 (28)
7/16
14UN
C-2B
P
(54 ) 0 -0.5
(62 )+1-0.5 2.44 +0.04
-0.02
2.13 0-0.02
M VA 8 5 ( S A E v e r s i o n )
Side flanges SAE 1" 6000 psi
Splined shaft SAE J744 17T 12/24DP 1½"
11.41 (289.9)0.5(12.70)
15°
4.80 (122)
4.49 (
114)
4.8
4 (12
2.90)
8.69 (220.8)
1.25
(31.
8)
6.52 (165.6)
86.8
(3.42
)
0.3(7.90)
T2 : 1"1/16 12UNF-2B
T1 : 1"1/16 12 UNF-2B
0.69 (17.5)
7.13 (181)
6.72 (
170.8
0) 4.19 (R106.5)
Ø 5.0
00.00
-0.00
(Ø 12
7
)0 -0
.025
S1
N0Rear flanges SAE 1" 6000 psiM0
Dimensions in inches (mm) are given only as an indication .
►Shaft - code
►Inlet ports - code
04
05
12 M VA 11 5 ( S A E v e r s i o n )
5.17 (131.40)
7.42 (188.4) 12.36 (313.9)
3.72 (
94.5)
4.7
0 (11
9.5)
4.3
9 (11
1.4)
1.3
4(3
4)
9.50 (241.3)
15°
0.50(12.70)
6.00
0.000
00.0
010
(Ø 15
2.40
)
0 -0
.025
7.90
(0.31)
T2 : 1"1/16 12UNF-2B
T1 : 1"1/16 12 UNF-2B
6.36 (
161.6
0)
6.36 (161.60)Ø 0.81(20.60)
8.11 (
206)
Ø 9.00(228.54)
Ø 0.94(24)
2.25
(57.2
)
1.09(27.8)
7/16 14UNC-2B
1.09(27.8)
2.25
(57.2
)
Ø 0.94(24)
7/16 14UNC-2Bdepth 22 mm
3.54(90)
1.42 (36)
2.05 (52)
2.63 (66.70)
5/8"
11UN
C-2B
(75 ) +1-0.50
P2.95 +0.04-0.02
Side flanges SAE 1" 6000 psi
Splined shaft SAE J744 13T 8/16DP 1¾"S1
N0Rear flanges SAE 1" 6000 psiM0
Dimensions in inches (mm) are given only as an indication .
►Shaft - code
►Inlet ports - code
04
05
13
Automatic displacement control, high pressure
HPA
Two speed hydraulic adjustment of displacement:
H2N
Two speed electric adjustment of displacement:
E2N
►Displacement sett ings - code
MA
Regulating pressure Pr (bar)
Displacement
Vmax
Vmin
Minimum setting
Maximum setting
80 90 350 360
Vmax Vmin
A B
PX
MB
MpV1 V2
P
Displacement
Vmax
Vmin
Minim
um se
tting
Maxim
um se
tting
Pilot pressure X(bar)
5 25 100
A
MA
G B
X
MpV1 V2
MB
Vmax Vmin
Coil supply voltage(Volt)
24
Vmax
Vmin
Displacement
Vmax Vmin
A G B
MpV1 V2
MA
P
MB
The automatic displacement control, high pressure, automatically adjusts displacement as a function of the set pressure level.
This can be set between 80 and 350 bar .
Once set pressure has been reached, the motor starts changing displacement from Vmin to Vmax. Pressure remains stable, torque increases and speed decreases until Vmax is reached.
Once Vmax has been reached, motor pressure can exceed set pressure if required.
.
Setting Vmin or Vmax displacement is done by applying an external pilot pressure, or not.
Pilot pressure can be set by a screw from 5 to 25 bar.
Once pilot pressure has been reached, the motor starts changing displacement from Vmin to Vmax (standard configuration). From Vmax to Vmin on request.
Important note: the pilot pressure line X must be drained when it is not under pressure (to ensure evacuation of leakage flow) .
Setting Vmin or Vmax displacement is done by applying an external electrical current via a solenoid, or not.
Standard voltage of the coil is 24V (12V on request).
When the coil is activated, the motor starts changing displacement from Vmin to Vmax (standard configuration) . From Vmax to Vmin on request.
.
D i s p l a c e m e n t c o n t r o l
07
14
0.41 (10.5)
4.53(
115)
0.79
(20)
Ø 0.55 (14)1.30 (
33)
0.60(15) Ø 0.26 (6.50)
Dimensions in inches (mm) are given only as an indication .
Supply voltage 5…32 V DC Current consumption maximum 6 mA without loadOutput frequency 0 Hz…20 kHzProtection type IP 69 kOperating temperature – 104°F…+ 257°F (– 40°C…+ 125°C)Weight around 65 gCable length 50 cm
S P E E D S E N S O R & I N D I C AT O R O F D I R E C T I O N O F R O TAT I O N L E D U C C O D E : 0 9 3 3 2 7
Codes and
MV, MVA, MVSI series motors can be fitted with an induction type speed sensor, to measure rotating speed and also direction of rotation. This accessory may only be used on motors which are suitably adapted to take it (see the order code system) .
►Technical data for the sensor
O p t i o n s | A c c e s s o r i e s
FLUSHING VALVE | LEDUC CODE : VBS 091180
Code
A B
►S c h e m a t i c d r a w i n g o f t h e f l u s h i n g v a l v e
08 09
10
Used to create flow to cool the motor. This valve is essential for all intensive uses of motors and contributes to long service life.
The valve takes some hydraulic fluid from the return connection port (low pressure) and reinjects it into the motor housing. This is then evacuated via the motor drain line .
Flushing valves are only available for use with motors with side ports (N1).
15I n s t a l l a t i o n & s t a r t u p
In installations where the position of the motor (H) is above the tank for the drain return, be sure the drain line is always submerged in fluid.If this is not the case, it is necessary to add a check valve on the drain line as shown the figure on right.
B A
Fr
70°
B A
Fr
70°
B A
Fr45°
B A
Fr45°
B A
Fr
H
►Maximizing service l i fe of bearingsIn cases where there is a radial force on motor shaft, keeping the direction of that force within the shaded areas shown below will improve service life of the motor .
Motor in rotationCCW
pressure in A
Motor in rotationCW
pressure in B
Motor in rotationCW
pressure in B
Motor in rotationCCW
pressure in A
Motor capableof rotation
CCW and CW
Gear hub Pulley hub
►Mounting posit ion of motors
LEDUC motors can be used in only mounting position. In ″shaft upwards″ position, make sure that the motor housing is completely filled with fluid.
Ensure a ∆P of (0 .3 to 0 .5 bar)
HYDRO LEDUC SAS Siège social & Usine
BP 9 - F-54122 AZERAILLES (FRANCE) Tél . +33 (0)3 83 76 77 40 - Fax +33 (0)3 83 75 21 58
HYDRO LEDUC GmbH
Haselwander Str. 5 D-77746 SCHUTTERWALD (GERMANY)
Tel. +49 (0) 781-9482590 - Fax + 49 (0) 781-9482592
HYDRO LEDUC ABGöteborgsvägen 74
SE-433 02 SÄVEDALEN (SWEDEN) Tel. +46 (0) 702 61 77 70
HYDRO LEDUC N.A. Inc. 19416 Park Row - Suite 170
HOUSTON, TEXAS 77084 (USA)Tel. +1 281 679 9654 - Fax +1 832 321 3553
EN_20160406_VARIABLE MOTORS
HYDRO LEDUC
SAS au capital de 4 065 000 €
EORI FR31902742100019
RC Nancy B 319 027 421
A p a s s i o n f o r h y d r a u l i c s
w w w . h y d r o l e d u c . c o m
HYDRO LEDUC SAS Head Office & Factory
BP 9 - F-54122 AZERAILLES - FRANCE Tél . +33 (0)3 83 76 77 40 - Fax +33 (0)3 83 75 21 58
HYDRO LEDUC GmbH Haselwanderstr. 5
D-77746 SCHUTTERWALD - GERMANYTel. +49 (0) 781-9482590 - Fax + 49 (0) 781-9482592
HYDRO LEDUC AB
Betongvägen 11 461 38 TROLLHÄTTEN - SWEDEN
Tel. 46 (0) 520 10 820
HYDRO LEDUC N.A. Inc. 19416 Park Row - Suite 170
HOUSTON, TEXAS 77084 (USA)Tel. +1 281 679 9654 - Fax +1 832 321 3553
make it simple