SC silent chains (SCA, SCR, SC)
SC silent chains use specially-coated round pins and special plates to attain an excellent engagement mechanism, and may keep a noise level remarkably reduced than standard roller chains.
SC sort silent chains may be utilised for large velocity and huge 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 framework for even further reduced noise level.
PS silent chain
A PS kind silent chain includes a structure by which a set of specially formed connecting pins and locker pins get hold of each other while rotating at just about every flexible bearing place. As a result, it generates much less heat in 
particular in higher speed operation and is excellent in durability. Moreover, the specially formed pins drastically lessen shock once the chain is engaged with sprockets, offering a higher silencing effect than SC silent chains.
Sprockets
Sprockets for silent chains adopt special modules in involute tooth varieties to the SCA 04××, SC 25××, SC 06×× about the former web page and PS silent chains to make certain silent substantial speed operation. For all sizes, the sprocket tooth heads are generally hardened by induction hardening or carburizing.
