The cause of vane pump failure is nothing more than these points! See if you know?

Many users will encounter such a problem in the use of vane pumps, the pump can not suck the oil, the pressure can not rise, leading to the vane pump can not work, which is where the problem? Today Dalan Hydraulic Xiao Bian asked questions for everyone.

One, cause

(1) The amount of oil is not enough, the oil level is too low, or the suction pipe is blocked by debris;

(2) click speed is too low (less than 500r/min), or reversed;

(3) The oil viscosity is too high and the oil resistance increases;

(4) The clearance between the blade and the rotor slot is too small, making the blade move in the slot inflexible;

(5) Poor contact between the oil pan and the housing, so that high and low pressure oil can communicate;

(6) The pump body has casting defects such as sand grains, shrinkage holes, etc., so that high and low pressure oil can communicate;

The cause of vane pump failure is nothing more than these points! See if you know?

Second, the solution

(1) Check the oil level and add enough oil to remove impurities and dirt from the oil suction pipeline;

(2) Check the click direction and rotation speed or replace the motor;

(3) Use a suitable viscosity of No. 20 mechanical oil or special hydraulic oil;

(4) Re-grind the blades to maintain proper fit clearance;

(5) Re-grind the two contact planes of the oil pan, the parallelism should be kept within 0.005mm;

(6) Replace the new pump.

Hydraulic pump as an important component in the hydraulic system, in the use of the process, the problem is not panic, follow the steps step by step to check over, you will find the problem and solution.

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