Hydraulic jack, insufficient thrust or slow speed of hydraulic jack can be checked from the followin

check for insufficient thrust or slow speed of hydraulic jack from the following four points:

1. the clearance between the piston and the cylinder body is too large, resulting in severe internal leakage,

2. the piston rod is bent, causing excessive resistance,

3. the sealing ring on the piston is damaged,

4. the inner surface of the hydraulic cylinder has a waist drum shape, indicating oil leakage at both ends.

if the clearance between the piston and the inner diameter of the cylinder is too large, the worn piston needs to be replaced;

if the piston rod is bent and the resistance is too high, it needs to be calibrated and replaced severely;

if the sealing ring on the piston is damaged, it needs to be replaced and should not be too tight during assembly;

if there is a waist drum shape on the inner surface of the hydraulic cylinder, causing oil leakage at both ends, the solution should be to bore and grind the inner hole of the hydraulic cylinder and equip it with a single piston.

the series of products produced by qingfeng hydraulic jack company are of high quality and provide you with comprehensive technical support. welcome to inquire by phone.