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Adverse consequences of surface scratches:


① The material scraps extruded from the scratched groove will be embedded in the seal. While damaging the working part of the seal during operation, it may cause new scratched area marks.


② Worsen the surface roughness of the inner wall of the cylinder and increase the friction, which is easy to produce crawling phenomenon.


③ Increase the internal leakage of the hydraulic cylinder and reduce the working efficiency of the hydraulic cylinder. The main causes of scratches on the inner hole surface of the cylinder block are as follows.