How to check the quality of the rotary cylinder seal?
If the rotating oil cylinder seal fails, or the hydraulic oil leaks, the oil cylinder will be damaged. So the quality of the seal ring is very important, so how to check the quality of the rotary oil cylinder seal?
During the operation of engineering machinery and equipment, the radial force of the lip of the oil cylinder seal ring on the shaft causes an oil film with a thickness of about 2.5 mm between the interfaces, which is the essence of the oil cylinder seal ring's sealing effect.
First check the appearance quality. The specification surface of the oil cylinder seal ring must be smooth and clean, without burrs, cracks, bubbles, missing corners, and foreign matter embedded defects. The edges of the oil lip are sharp, without gaps, burrs and unevenness. The width of the contact between the lip and the shaft should be appropriate, generally 0.25mm is more suitable. The adhesion between the rubber and the reinforcing ring must be tight without loosening, the deviation of the reinforcing ring is not allowed, and the inner and outer surfaces are free of iron.
Secondly, use a vernier caliper to measure the size of the cylinder seal ring. It is recommended to use a standard plug gauge to measure the inner diameter to check whether the tightness is appropriate. According to the needs and conditions, oil resistance test can be carried out. According to the requirements of Dongsheng seal manufacturers, the cylinder seal ring cutting edge should be in proper interference with the matching journal. If it is too large, it will affect its service life. If it is too small, the sealing performance will deteriorate. .
The above is the method to check the quality of the rotary oil cylinder seal ring. I hope it will be helpful to everyone.