The chain is located at the external surface area of the wheel, equal a belt, and the teeth stick outside the chain. The chain grips with the wheel through teeth that are 
located at the bottom of the chain. The chain teeth and the chain wheel teeth are therefore constituted that by wear at the linking components the pitch increases, the chain accordingly have a tendency to move out on the tooth surfaces, so to grip on a larger pitch diameter; the consequence of this move is that the pitch of the chain and the pitch of the wheel enhance to the same degree.
The load on the teeth is divided across all the teeth within the contact arc, whatever the extension by wear.
The links do not show any gliding on or of the teeth, which posesses soft and practically noiseless Special Chains gripping; this transmission was also engineered for transmitting power or higher speeds than this is allowed for roll chains.
The return of the “low noise chain” can amount 99% and for the full transfer from 96% to 97% under favourable conditions; of 94% upto 96% there exists a guarantee with smartly designed transmission under average operating conditions.
The life time and maintenance of low noise chains depends mainly on the design of the entire chain drive, the tension arrangement included. At extremely loose chains the balancing of the chain will speed up the wear. A good tension arrangement can double the lifetime. A slight clearance is required with at the least +/-3 mm. Although the chain is getting higher positioned on one’s teeth upon stretching of the pitch, this stretching isn’t moderated by the directly section of the chain, which means that this section is usually slacking at wear.
