SC silent chains 
(SCA, SCR, SC)
SC silent chains use specially-coated round pins and unique plates to accomplish an excellent engagement mechanism, and might hold a noise level remarkably reduce than traditional roller chains.
SC type silent chains could be used for large velocity and large stress transmission similar to a toothed metallic belt because the plates directly engage with the sprockets for driving.
SCR-04 silent chains are created with inner engaging structure for additional decreased noise level.
PS silent chain
A PS variety silent chain includes a framework by which a set of specially formed connecting pins and locker pins make contact with each and every other while rotating at every single flexible bearing place. Therefore, it generates less heat specially in substantial pace operation and is excellent in durability. Furthermore, the specially formed pins significantly cut down shock once the chain is engaged with sprockets, giving a larger silencing effect than SC silent chains.
Sprockets
Sprockets for silent chains adopt exclusive modules in involute tooth forms for the SCA 04××, SC 25××, SC 06×× around the previous web page and PS silent chains to ensure silent large pace operation. For all sizes, the sprocket tooth heads are often hardened by induction hardening or carburizing.
