Edité par FP PG/ja/31.05.2010

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BENT AXIS MOTORS:

M, MA and MSI

1. Description page 3

2. Motors characteristics page 4

3. Common characteristics page 5

4. Working and mounting page 7

5. Hydro Leduc range page 11

6. Accessories page 19

7. Performances page 21

8. Applications page 25

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M, MA and MSI motors

High capacity bearing:association of conical bearing and a roller bearing for a high life of the hydraulic motor.

Reinforced seals to withstand back pressure on motor drain return lines up to 5 bar.

High pressure oil injection on piston heads: this reduces friction, heat and wear.

Piston heads engaged into barrel: no risk of piston/plate seperation.

7 pistons design ensuring excellent rotating smoothness and constant torque.

Distribution plate in bronze: friction reduction and good adaptability in degraded fluids.

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No gears between plate and rotating barrel yields reduced noise levels.

M, MA and MSI motors

Desing and manufactured with motor barrel and valve plate automatically aligned. This guarantees long service life (because no radial mechanical stress).

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2. Motors characteristics

N motor = 1000 rpm

Oil ISO46 at 77 °F (25°C)

Global efficiency

Efficiency of motors

M, MA and MSI motors

Displacement(cm3)

Continuousmax speed

(rpm)

Intermittent max. speed

(rpm)

Max. flow absorbed

(l/mn)

Torque bar

(N.m/bar)

Torque at

350 bar(N.m)

Motormax./min.

temperature(°C)

Weight(kg)M/SI

Max. allowablepressure

continuous/peak(bar)

12 8000 8800 96 0.19 66 -25/110 5.5 400/450

18 8000 8800 144 0.28 98 -25/110 5.5 400/450

25 6300 6900 158 0.40 140 -25/110 11 400/450

32 6300 6900 202 0.50 175 -25/110 11/15 400/450

41 5600 6200 230 0.65 227 -25/110 11/15 400/450

45 5000 5500 225 0.72 280 -25/110 18/21 400/450

50 5000 5500 252 0.80 280 -25/110 18/21 400/450

63 5000 5500 315 1.00 350 -25/110 18/21 400/450

80 4500 5000 362 1.27 445 -25/110 23/27 400/450

90 4500 5000 405 1.42 499 -25/110 23/27 400/450

108 4000 4400 435 1.70 595 -25/110 23/27 400/450

108 (M108R)

3400 4400 367 1.70 595 -25/110 30 400/450

126 3400 4500 428 2 700 -25/110 30 400/450

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M, MA and MSI motors

Minimum rotating speed obtain continuous rotation is 200 rpm (however, in certain conditions, the motor can run at speeds as low as 50 rpm).

Displacement(cc)

FrRadial Force

at mid point of length (N)

FaAxial force which tends to

push the shaft inwards(N/bar)

12 2800 15

18 4000 20

25 6000 27

32 6500 30

41 7000 40

45 6500 40

50 7500 40

63 9000 50

80 10500 60

90 6700 67

108 7000 80

108 (M108R) 12500 80

126 14500 86

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M, MA and MSI motors

Arriving through the (A) ports of the distribution plate, the fluid under pressure acts on the corresponding pistons. The thrust force causes a rotational movement of the barrel (cylinder block), maintained by the arrival of oil on the pistons, and of the shaft.Upon return of the pistons, the fluid, low pressure, is blowed of through the opposite ports(B) in connection with the tank.The oil flow reversal, reverses the direction of rotation.

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AB

B

A

M, MA and MSI motors

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M, MA and MSI motors

Leak zones

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Mounting position of motors

The drain on a hydraulic motor is essential for its good operation. It is designed to protect the radial seal from excessive pressure. The maximum pressure possibility is a function of the speed of rotation. It can usually be defined as :

•Maximum interne pressure(P int) : 5 bar (72.55 PSI)•Intermittent maximum internal pressure : 5.5 bar (79.8 PSI)

In standard version, the hydraulic motors are equipped with Viton seals, for other applications HL proposes other solutions:

•Low temperature until -40°C (-6 °F)•High pressure up to 15 bar (217.65 PSI)

M, MA and MSI motors

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4.4. Application circuit - open / closed

M, MA and MSI motors

Open loop :

Requires the use of a valve in all cases where the motor is to operate in both directions of rotation. The variation in motor speed is achieved by varying the flow from the pump : either by using a variable displacement pump or a pump with variable speed drive.

Closed loop :

In this case, the motor is supplied by a variable displacement pump capable of supplying flow in both directions of rotation of the motor. This means the motor rotating speed can be controlled by varying the pump flow. The dual direction of rotation of the motor is ensured by inverting the flow of the pump.

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5. The Hydro Leduc range and its applications

5.1. Characteristics

•Motors capable of a very wide range of rotating speeds

• Minimum size

• High performance

• Exceptionally high overall efficiency

• Reduced noise levels

M, MA and MSI motors

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M, MA and MSI motors

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5.2. M motors:

M, MA and MSI motorsExample: M 45/50/63

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Hydro Leduc MSI hydraulic motors are specifically designed for optimum integration into a receiving organ, and in particular a planetary gearbox. This association enables the same torque and speed to be achieved as with a low speed motor, for example.

M, MA and MSI motors

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5.2. MSI motors:

Example: MSI 50/63

M, MA and MSI motors

5.2. MA motors:

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M, MA and MSI motors

5.2. MA motors:

Example: MA 45/50/63

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M, MA and MSI motors

5.2. Recapitulation

18For more information about the functions of the motors, please refer to our catalogues.

M, MA and MSI motors

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6. Accessories

6.1. Capteur de vitesse

M, MA and MSI motors

Speed sensor :

•Speed measurement

•Direction measurement

Power supply : 8 … 32 V DC

Frequency range : 0 … 20 000 Hz

Operating temperature :

-40 … 125 °C-6 … 257 °F

Degree of protection :

IP69K

Connection : 4 wires

Max pressure on sensing surface :

10 bar (145 PSI)

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Flushing circuit valve:

Used to create flow to cool the motor. This valve is essential for all intensive uses of motors and contributes to long service life, particularly in closed loop transmission applications.

Depending on applications, this valve is either integrated into motor back piece or added on to the motor.

M, MA and MSI motors

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M

P

Q

P

1

2

3 4 5

6

7

8

91011

M, MA and MSI motors

N° Designation Characteristics

1 Electric motor P = 250 kW

2Variable displacement pump

Cylindrée = 130 cm3

3 Valve

4 Flow meter

5 Pressure sensor 0 – 600 bar

6 Motor in test

7Torque and speed measure

8 Relief valve

9 Pump (load)Displacement= f(motor in test)

10 Drain flow meter 0 – 20 l/min

11 Drain pressure sensor

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M, MA and MSI motors

1040 hours: 748 800 cycles - 2 995 200 pressure peaks

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M, MA and MSI motors

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M, MA and MSI motors

•1000 hours cycled test on all the range of motor.

•Continuous endurance test (N = 1500rpm , P = 450 bar)

•Tests at low viscosity and degraded fluids (v = 5 cSt)

•Tightness test

•Comparisons with competitors (efficiency, speed…)

•Tests with important axial stress (2 tons during1000 hours)

•Customer tests (configuration simulation)

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8. Applications:

M, MA and MSI motors

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8. Applications:

M, MA and MSI motors

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8. Applications:

M, MA and MSI motors

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8. Applications:

M, MA and MSI motors

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8. Applications:

M, MA and MSI motors

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8. Applications:

M, MA and MSI motors

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8. Applications:

M, MA and MSI motors

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