SC silent chains (SCA, SCR, SC)
SC silent chains 
use specially-coated round pins and special plates to achieve an excellent engagement mechanism, and may retain a noise degree remarkably lower than typical roller chains.
SC style silent chains could be made use of for substantial speed and big stress transmission just like a toothed metallic belt because the plates immediately engage with the sprockets for driving.
SCR-04 silent chains are developed with inner engaging construction for further decreased 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 contact just about every other whilst rotating at just about every flexible bearing position. Therefore, it generates much less heat specifically in large velocity operation and is outstanding in durability. In addition, the specially formed pins greatly cut down shock when the chain is engaged with sprockets, offering a higher silencing effect than SC silent chains.
Sprockets
Sprockets for silent chains adopt specific modules in involute tooth varieties to the SCA 04××, SC 25××, SC 06×× around the previous page and PS silent chains to ensure silent high velocity operation. For all sizes, the sprocket tooth heads are usually hardened by induction hardening or carburizing.
Silent Chain
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