Raptors, the authorized dealer of Cummins (China), established in 2015 by Mr. Jordan Wang who worked in Cummins (China) for 8 years, Jordan had been responsible for mine market for 4 years during working in Cummins china, so we have big advantages for almost all genuine Cummins generators, engine assembly and spare parts, especially for NTA855, KTA19, KTA38, KTA50, QSK60, QSX15 etc...Working PrincipleThe tensioner is a commonly used holding device in the belt and chain transmission system. Its characteristic is to keep the belt and chain with proper tension during the transmission process, so as to prevent the belt from slipping, or to avoid the synchronous belt from jumping and falling off teeth. drag out. Or prevent the chain from loosening and falling off, and reduce the wear of the sprocket and chain.FeaturesIn terms of effect, the tensioner using the spring structure is simple in construction and cheap, so it is more commonly used, while the tensioner using rubber parts has a longer life than the spring due to the good elastic properties of rubber, but it has a long lifespan. The performance requirements are relatively high and the price is relatively expensive, so the usage is less, and it is usually used in high-end mechanical equipment.