Gear motor is medium operational power motor with moderately efficient and simple in design. The main components of a gear motor are idler shaft, output shaft, an inlet for putting high pressure oil, outlet for the passage of low pressure oil, casing and gear. Two meshing spur gears with shafts are carefully fixed on the bearing located in the closed housing. Inlet and outlet ports for the passage of oil are designed in the housing. One gear is mounted on the output shaft projecting out of the casing and the other kept idle. Gear moves in opposite direction by the influence of high pressure oil. Efficiency of gear motor is independent of pressure, speed and torque. Gear motors are used in medium speed and low torque applications.