SC silent chains (SCA, SCR, SC)
SC silent chains use specially-coated round pins and special plates to accomplish an ideal engagement mechanism, and may keep a noise level remarkably decrease than traditional roller chains.
SC type silent chains might be applied for high velocity and large stress transmission similar to a toothed metallic belt since the plates directly engage with the sprockets for driving.
SCR-04 silent chains are built with inner engaging structure for additional lowered noise level.
PS silent chain
A PS variety silent chain includes a construction through which a set of specially formed connecting pins and locker pins get hold of each other even though rotating at every single versatile bearing place. So, it 
generates much less heat in particular in high pace operation and it is great in sturdiness. Furthermore, the specially formed pins tremendously minimize shock when the chain is engaged with sprockets, offering a higher silencing result than SC silent chains.
Sprockets
Sprockets for silent chains adopt special modules in involute tooth kinds for that SCA 04××, SC 25××, SC 06×× over the prior page and PS silent chains to make sure silent high velocity operation. For all sizes, the sprocket tooth heads tend to be hardened by induction hardening or carburizing.
Silent Chain
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