SC silent chains (SCA, SCR, SC)
SC silent chains use specially-coated round pins and unique plates to attain an ideal engagement mechanism, and can hold a noise degree remarkably decrease than traditional roller chains.
SC style silent chains could be made use of for higher pace and big tension transmission just like a toothed metallic belt since the plates straight engage together with the sprockets for driving.
SCR-04 silent chains are made with inner engaging framework for even further diminished noise level.
PS silent chain
A PS sort silent chain features a framework through which a set of specially formed connecting pins and locker pins get hold of each and every other while rotating at every single versatile bearing place. Consequently, it generates less heat particularly in high pace operation and it is exceptional in sturdiness. Additionally, the specially formed pins significantly decrease shock when the chain is engaged with sprockets, 
giving a greater silencing effect than SC silent chains.
Sprockets
Sprockets for silent chains adopt particular modules in involute tooth kinds to the SCA 04××, SC 25××, SC 06×× within the former web page and PS silent chains to ensure silent large velocity operation. For all sizes, the sprocket tooth heads are generally hardened by induction hardening or carburizing.
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