Cummins  diesel engine belt ISBE 5260613 8PK1780 V ribbed belt
 

Specifications:

 
Applications:
 

Belt description:
 

A timing belt, timing chain or cam belt is a part of an internal combustion engine that synchronizes the

rotation of thecrankshaft and the camshaft(s) so that the engine's valves open and close at the proper

times during each cylinder's intake and exhaust strokes. In an interference engine the timing belt or chain

is also critical to preventing the piston from striking the valves. A timing belt is a usually a toothed belt --

a drive belt with teeth on the inside surface. A timing chain is a roller chain.

Most modern production automobile engines use a timing belt or chain to synchronize crankshaft and

camshaft rotation; some engines instead use gears to directly drive the camshafts. The use of a timing

belt or chain instead of direct gear drive enables engine designers to place the camshaft(s) further from

the crankshaft, and in engines with multiple camshafts a timing belt or chain also enables the camshafts to

be placed further from each other. Timing chains were common on production automobiles through the

1970s and 1980s, when timing belts became the norm, but timing chains have seen a resurgence in

recent years. Timing chains are generally more durable than timing belts – though neither is as durable

as direct gear drive – however, timing belts are lighter, less expensive, and operate more quietly.

 
 
 
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