Hydraulic gear motor

gear motor

Group 1/2/3

Gear motor of GRH Hydraulic features floating bush structurewith the function of automatic axial clearance compensation.Special abrasion resistance recipe of the bush supplied the longservice life; the gear precisely machined ensured the excellentoperation with low noise; cold-extrusion profile pump body canendure the pressure over 30Mpa; high strength cast iron offront/back cover is more reliable to operate. It can be widely usedin industrial hydraulic system, hydraulic system of mobilemechanism, hydraulic system of aerospace system, hydraulic systemon the ship and the hydraulic system on ocean engineering.

GRH has three series for gear motors ranging from group one togroup three. According to rotation, it can be divided into twotypes, one is single-direction gear motor the other isbi-directional gear pump. Normally structure of single-directiongear motor is similar to that of single-direction gear pump withonly slight difference in some respects. Therefore, all the GRHgear pumps have their respective single-direction gear motor. Whileplacing your order, please refer to the phasing code on page.

Hereby we put our focus on bi-directional gear motor.Bi-directional gear motor has different sealing structure withsingle-direction gear motor. As the drawing shown below,symmetrical sealing structure separates high-low pressure,guaranteeing the possibility of bi-direction operation of gearmotor. The oil from inner leakage returns to oil tank throughdrainage port. Usually, pressure of drainage port is 2-3 bar, thatmeans shaft oil sealing can bear pressure from 2 to 3 bar, and cansupport pressure of 5 bar in short time. High quality of bush,bearing and sealing kits guarantees outstanding performance of GRHgear motors.