1.The service life of O-Ring or X-Ring Chain is greatly depended on the wearing between the pin-shaft and the sleeve. The "O" ring or “X” ring will greatly reduce the wearing and thus prolongthe service life by 3-5 times.
Hangzhou Qianjiang Chain Industries Co., Ltd founded in 1988, is a professional manufacturer of industry transmission chains,motorcycle chains,conveyor chains,dust and water proof sealed chains and some special chains,is also the earliest manufacturer that developed and produced O-ring and X-ring sealed chains. In 2001,Qianjiang's sealed chains were awared "outstanding new products of national chain industry " and "special award".
Qianjiang has three famous brands: Y...