1QJM52 Hydraulic Motor

QJM series hydraulic motor's structure principle:

The QJM hydraulic motor's oil distribution shaft is rigidly connected with the rear cover. The rotor block uses the oil distribution shaft as

radial support and employs a stator spherical rollaway nest and steel ball as axial support. The rotor's output shaft is an internal spline,

and the rotor block is floating. The oil distribution shaft is rigid, allowing the use of steel pipe connections for oil inlet and outlet.

Pressure oil is directed to the distribution port of each channel's high-pressure chamber by the variable valves, and then the pressure oil will

flow into each piston cylinder hole. Under the effect of pressure oil, the piston uses the ball with positive pressure N to affect the stator.

The stator, in turn, uses the same value number of reaction force N' to affect the steel ball. N can be divided into two components: radial and tangential.

The tangential force F, using the piston, acts on the rotor block. Driven by the tangential force F, the rotor block rotates around the oil distribution shaft.

At the same moment, there are a few pistons under the pressure oil effect, so it can produce large torque.