EFGM Hydraulic Motor

EFGM series motors are a result of the many years' of experience based on Italy technology and incorporate a number of design variations with respect to the technology intended to increase the strength of the motor castings and the load capacity of the internal dynamic components. The result is the series of motors with high continuous power ratings, both because of the reduced internal specific loads, and because of the high mechanical and volumetric efficiency that contribute in reducing the amount of head produced and therefore also the negative effects associated with it. The main characteristic is as follows:
(1) The side loading between the pistons and swiveling cylinder has been eliminated; The hydrostatic balance is built between the piston feet; The piston transmit load to the shaft via a rolling bearing. All above reduces the friction loss in the load transmission. Therefore EFGM series hydraulic motor features high mechanical efficiency and high starting torque (above 92%)
(2) Rotary axial distributor (patent technology) ensures simply and reliable performance, good sealing capability, low leakage. The plastic piston ring between pistons and cylinder reducers the leakage, so the volumetric efficiency of motor is very high (more than 99%)
(3) Due to the reduced friction loss in structure and improved sealing capability, so the motor can operate at low speeds with a high degree of speed stability, even if at 1 r/min of the speed. Hereby the speed control range is wide (the speed control ratio is up to 1000)
(4) The pistons and bearing sleeve is matched well via supporting ring to eliminate the clearance. So the series motors can run in pump condition. When the inlet port and outlet port is closed, the motors could run in freewheeling condition.
(5) The working pressure of the series motor is very high, and the maximum pressure is up to 45MPa. The motor also features light weight, small size and high specific power.
(6) Because of simple structure, reasonable design, and using large load capacity bearing, the series motors has many excellent features as follow good reliability, long lifetime and low noise. Transmission shaft endure radial load. Circumrotate way could be reverse.

Due to above these advantages, it has been widely applied in all kinds of hydraulic transmission system such as plastic injection machine, ship and deck machinery, construction machinery and equipment, hoist and transport vehicle, heavy metallurgical machinery, petroleum and mine machine, light industry equipment, lath, light industry equipment and drilling mine machine etc. In particular, it particular, it can be well available in driving screw rod of injection machine, hoisting winches and capstan, and driving variable slew drives.