Bent axis hydraulic motors - Fixed displacement
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B E NT AXIS H YD R AULIC MOTORS FIXED DISPLACEMENT

Contents Applications and efficiency. . . . . . . . . . . . . . . . . . . . . . . . Definition and advantages. . . . . . . . . . . . . . . . . . . . . . . . . Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Determination / calculating the right motor . . . . . . . . Range and characteristics of M series motors. . . . . . . . . . . . 10 Order code system of M series motors. . . . . . . . . . . . . . . . . . 11 Dimensions M 5 to M 180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 BENT AXIS HYDRAULIC MOTORS Range and characteristics of MA series...

Range of bent axis hydraulic motors ▪ Displacement 5 cc/rev - CETOP ▪ Displacements from 12 to 180 cc/rev - ISO ▪ For fixed and mobile applications ▪ SAE ▪ Displacements from 10 to 180 cc/rev ▪ For fixed and mobile applications Options Accessories ▪ ISO - semi-integrated ▪ Displacements from 28 to 125 cc/rev ▪ For applications mounted on a planetary gearbox ▪ Single direction of rotation ▪ Bi-d

Applications & efficiency ► Main applications Typical applications are those requiring high torque within a small size. The hydraulic motor is essential for rotations where: mechanical solutions are complex or even impossible; electrical or pneumatic power sources are not available; environments are dangerous (i.e. risk of explosion or extreme temperatures). Mowers: drive of grass cutting blade, where mechanical solution would be too complicated or impossible; Blowers: compressor drive; Wheel drive of undercarriages for construction equipment (motor installed on planetary gearbox);...

Definition & advantages ► Definition of function Hydraulic motors transform hydraulic flow into rotating speed and hydraulic pressure into mechanical torque. Motor rotating speed is proportional to the flow which is supplied to it. Torque produced is proportional to the hydraulic pressure the motor receives. ► Advantages of LEDUC motors High quality materials and workmanship. The design choices highlighted below ensure the remarkable reliability and long service life of LEDUC motors. No gears between plate and rotating barrel yields reduced noise levels. Choice of increased bearing capacity...

Operating conditions ►Filtration of the hydraulic fluid Before start-up, the motor must be filled with oil. 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...

Operating conditions ►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 or T2, to avoid excessive pressures on the shaft seal. Maximum acceptable internal pressure depends on motor rotating speed. However, following these guidelines will avoid problems during operation: Maximum internal pressure (int P) regardless of rotating speed (continuous): 4 bar; Maximum internal pressure (int P) regardless of rotating speed (peak): 5.5 bar; Minimum pressure in...

Determination | Calculating the right motor ►How to determine the correct motor for your application Calculations using usual mechanical units: N C ΔP Cy Q η = rotating speed (rpm) = Torque (N.m) = Pressure difference between A and B (bar) = Displacement cc/rev = Flow (l/min) = Efficiency (%) 1. Torque supplied by the hydraulic motor Theoretical torque = For example: a 50 cc/rev motor with a ΔP of 250 bar will supply a theoretical torque of 200 N.m. Average global efficiency of the motor is 90%, actual torque is thus: 180 N.m). 2. Rotating speed of the motor The rotating speed of the...

Determination | Calculating the right motor ►Example Hydraulic motor Pressure relief valve Variable displacement pump The receiving organ (winch) ⑥ needs to rotate at N = 400 rpm and supply an actual torque of 200 N.m. The hydraulic pump ② is capable of operating at pressure P up to 350 bar. 1. Calculating the displacement of the hydraulic motor: Cth = Disp. x ΔP thus Disp. = 35.9 cc/rev 20 π In the LEDUC range, choose a motor with a displacement of 32 cc/rev or 41 cc/rev. 2. Calculating the flow Q which the pump needs to supply: Q= Corresponding flow: ▪ For 32 cc/rev motor, Q = 12.8 l/min...

CHARACTERISTICS OF THE M SERIES MOTORS Motor model Continuous Intermittent max. max. speed (1) speed (1) (rpm) (rpm) Displacement (cc/rev) Torque (N.m/bar) Theoretical Max. allowable maximal power at pressure 400 bar continuous / peak (kW) (bar) (1) For higher speeds, please contact us. (2) The M 108 R motor is in the frame size of the M 125. ►Acceptable forces applied to motor shaft Motor model Fr: radial force measured at mid point of length of shaft. Fa: axial force which tends to push the shaft inwards. * Differential pressure between A and B. For other forces, please contact us.

Order code system of M series motors ... To obtain the code for your motor, complete the different parameters 02, 04, 05, 07, 08, 09 and 10 in the table on the left according to the options you require (see table below). 0 = Without suitability for valves 1 = Compatible with flushing valve Drain ports T1 and T2 2 Suitable for use of speed sensor 07

M 5_093840 CETOP flange, 2 bolts ►Shaft end Cylindrical keyed shaft Ø 18 AS 6 x 6 x 32 ►Inlet ports Rear threaded ports A and B G ½" Dimensions in mm are given only as a

Cylindrical keyed shaft Ø 20 DIN 6885 AS 6 x 6 x 32 +1 6 Cylindrical keyed shaft Ø 25 DIN 6885 AS 8 x 7 x 32 ►Inlet ports Side threaded ports A and B 123.4 Rear threaded ports A and B 143.3 M 22 x 1.5 Dimensions in mm are given only as an indica