SC silent chains (SCA, SCR, SC)
SC silent chains use specially-coated round pins and distinctive plates to accomplish a perfect engagement mechanism, and can preserve a noise level remarkably lower than traditional roller chains.
SC kind silent chains could 
be utilized for large pace and large tension transmission similar to a toothed metallic belt because the plates immediately engage together with the sprockets for driving.
SCR-04 silent chains are developed with inner engaging construction for even further lowered noise degree.
PS silent chain
A PS kind silent chain has a framework through which a set of specially formed connecting pins and locker pins make contact with just about every other though rotating at each versatile bearing place. Consequently, it generates significantly less heat specially in substantial speed operation and is outstanding in durability. Moreover, the specially formed pins significantly lessen shock once the chain is engaged with sprockets, delivering a larger silencing effect than SC silent chains.
Sprockets
Sprockets for silent chains adopt particular modules in involute tooth forms for that SCA 04××, SC 25××, SC 06×× about the preceding webpage and PS silent chains to make certain silent large velocity operation. For all sizes, the sprocket tooth heads usually are hardened by induction hardening or carburizing.
