MXB-63 slant disc servo variable displacement piston pump model description



Structural sectional view of MXB-63 inclined disc servo variable displacement piston pump


Working Principle

The main body (see structural section) is driven by the transmission shaft to rotate the cylinder body, causing the seven pistons evenly distributed on the cylinder body to rotate around the centerline of the transmission shaft. The sliding shoes in the column sliding component are pressed onto the variable head (or inclined plate) through the central spring. In this way, the plunger undergoes reciprocating motion with the rotation of the cylinder body, completing the oil suction and pressure actions.
The output variable of MXB pump is achieved by maneuvering or manually using the high-pressure oil output from the main body during operation to manipulate the servo variable mechanism. The variable head can tilt up and down, so the oil flow during operation can be reversed. The variable principle is as follows: the high-pressure oil led out from the pump body outlet passes through the flow channel in the pump body and pump housing, and enters the lower chamber a of the variable housing through the lower flange. When the pull rod moves downwards, it pushes the servo valve core to move downwards, and the high-pressure oil in chamber a enters the upper chamber c through channel b, pushing the variable piston to move downwards, driving the pin shaft, causing the variable head to rotate around the center, thereby changing the inclination angle and flow rate; When the pull rod is lifted upwards, channel b is closed, and the high-pressure oil in upper chamber c is released through channel d. The resulting pressure difference causes the variable piston to move upwards, thereby adjusting the variable.

Overall dimensions

MXB-63 slant disc servo variable piston pump