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Timing belt

A timing belt is a mechanical component with internal teeth that ensures precise synchronization between the crankshaft and camshaft in internal combustion engines. The belt width varies depending on engine type, typically between 15 and 40 millimeters, with a thickness of about 4 to 8 millimeters. The tooth pitch is usually 8 or 9.525 millimeters, and the number of teeth ranges from 100 to 160. Timing belts are made from rubber reinforced with fiberglass, nylon, or Kevlar. The standard operating temperature range is from -30 to +120 degrees Celsius. The tensile strength of the belt typically ranges from 1500 to 2500 Newtons, offering high resistance to impact stress.

The tooth profile of a timing belt may be trapezoidal or curvilinear, each designed to match specific pulley types. The typical belt length ranges from 800 to 1600 millimeters, with a weight of approximately 200 to 600 grams. International standards such as ISO 9010 and DIN 7721 govern the geometric design and material resistance of timing belts. The belt must operate slip-free and be precisely aligned with pulleys to prevent valve damage. Under normal conditions, the timing belt lifespan is between 60,000 and 100,000 kilometers. In turbocharged or high-RPM engines, this interval should be shortened to minimize the risk of belt failure.
WEBSITE: Timing belt Iran