Dong bo NOS chain adopted oil-contained sintered bushing which made considerable improvement of durability through self-lubricating ability with no need of additional lubrication. Choice of NOS chain can be optimum to the environment of limited or inapplicable lubrication.

Economic Chain

-Extended life by 40 times at low speed of 30M/min and by 10 times at normal 90M/min comparing to standard roller chain.

-As extended life saves costs for frequent changes of chains, NOS is considered as the most economic and effective chain in this point.

Environmentally Friendly Chain

-Thanks to no needs of lubrication surroundings are prevented from being polluted by lubricant, and low noise also contributes to better working enviroment.

-Improved anti-corrosion by special coating on surface of the chain

Compatible Chain

-Identical design to standard roller chain, with same dimensions and same specifications; no need to change related equipments.