After a long time use of the swing cylinder, oil leakage, crawling and other failures will occur. So what causes it? How can we solve it? Let's find out below!
Failure one, leakage
Cause one, the seal is damaged and deformed
The oil leakage caused by the compression deformation of the seal must be replaced by the rubber ring. Seal failure caused by high temperature should be eliminated while replacing the rubber ring. Damage to the rubber ring caused by excessive fitting clearance of parts cannot be replaced simply when repairing. The replacement method should be used to improve the clearance of parts to prevent repeated damage to the seal.
Cause two: oil leakage caused by cracked upper cylinder cover
The crack of the upper cover should change the lifting angle and use a cylinder with an unloading function, otherwise the upper cover will be cracked if only the cylinder is changed.
Cause three: oil leakage caused by strain on piston rod and guide sleeve
Once the piston rod and the guide sleeve are damaged, they can only be scrapped without repair value. The piston rod should be prevented from bumping. The burrs of bumps should be removed at any time.
Failure two, internal leakage
Cause one: Piston rubber ring is worn and broken
If abrasion occurs, the cleanliness of the oil should be checked to prevent abrasion after replacement of the rubber ring. If the rubber ring is broken, check whether the pressure is too high, and adjust the pressure to within the rated pressure. The piston and the cylinder are too large to cause internal leakage, which cannot be repaired and should be returned to the factory.
Cause two, the piston and cylinder are strained
The internal leakage caused by the strain of the piston and the cylinder tube should be checked when the cylinder is changed to ensure that the oil is clean to prevent the strain from recurring.
Cause three, the aging of the rubber ring loses the sealing function
The rubber ring is deformed under pressure and should be replaced.
Cause four: The seal ring is broken due to a bad retaining ring
The retaining ring on the piston is easy to cut during assembly. Once cut, it will affect the service life of the rubber ring and cause internal leakage. Special tools are recommended to prevent cuts.
Failure three, crawling
Cause one: there is gas in the oil causing the cylinder to crawl
The oil cylinder can be deflated with an air release screw, and the air cylinder can be repeatedly raised and lowered to the head without the air release screw. The gas can be eliminated and the crawling phenomenon can be eliminated. There is little oil in the fuel tank, and there is gas in the oil caused by gas leakage in the oil pump due to gas leakage in the oil pipe. Crawling of the oil cylinder should be solved according to different reasons for different reasons.
The above is the introduction to the causes and solutions of common failures of the oil cylinders. It can be seen that any machinery needs to be regularly inspected and maintained to avoid shutdowns that affect work, and also extend the life of the machine.
Weihai Kate Hydraulic Technology Co., Ltd. Address: Dongjing Road, Huancui District, Weihai City, Shandong Province Contact: Wang Hongyi
Main products: swing cylinder, rotary cylinder