The cause of oil leakage in axial piston pump is briefly described

Axial piston pump is a reciprocating pump, belongs to the volume pump, the plunger driven by the eccentric rotation of the pump shaft, reciprocating movement, its suction and discharge valves are one-way valves. When the plunger is pulled out, the pressure in the working room decreases and the outlet valve closes. When the pressure is lower than the inlet pressure, the inlet valve opens and liquid enters. When the plunger is pushed inwards, the pressure in the workroom increases and the inlet valve closes. When the pressure is higher than the outlet pressure, the outlet valve opens and the liquid is discharged. When the drive shaft drives the cylinder body to rotate, the swash plate pulls the plunger from the cylinder body or pushes it back, completing the oil absorption and drainage process. The oil liquid in the working chamber composed of plunger and cylinder hole is communicated with the suction and discharge cavity of the pump respectively through the oil distribution disc. The variable mechanism is used to change the inclination Angle of the swash plate. What is the cause of the axial piston pump leakage? Here is a detailed explanation for you!

 

1, the pump's external tubing loose, pipe joint damage, seal pad aging or crack;

 

2. The oil seal of the spindle is damaged or the shaft is defective or scratched;

 

3. The leakage pipe is too thin and too long, causing oil leakage at the sealing place;

 

4. Excessive internal leakage will increase the pressure at the oil seal, and damage or flush out the oil seal;

 

5, axial piston pump cleaning machine cast iron pump shell has holes or poor welding;

 

6. Bolts of variable regulating mechanism become loose and seals are damaged.

The above: How to deal with Axial hydraulic piston pump flow insufficient