A good toothed belt; timing belt; cogged belt; cog belt; or synchronous belt can be a versatile belt with the teeth moulded onto its inner surface. It is made to 
run over coordinating toothed pulleys or sprockets . Toothed belts are found in several in mechanical gadgets, where high-power transmitting is desired.
Toothed belts are used widely in mechanical gadgets, including sewing machines ,photocopiers and many others. A major use of toothed belts is really as the timing belt used to drive the camshafts in a automobile or motorcycle engine.
As toothed belts can deliver more power when compared to a friction-get belt, they are utilized for high-power transmissions. These include the primary drive of some motorcycles , notably later on Harley-Davidsons ;and the supercharger used for dragsters .
Microlight aircraft driven by high-speed two-stroke engines like the Rotax 532 make use of toothed belt decrease drives to allow the use of a quieter and better slower-amount propeller. Some amateur-built airplanes powered by automotive engines use cog belt decrease drive units.
A good tooth pulley has some teeth whereas a flat belt pulley does not have any teeth.
The tooth pulley is used when accurate transmission of the torque is necessary. Toned belt pulleys or V-belt pulleys cannot deliver 100% accurate transmission of the torque because almost always there is some (very little – but nonetheless) slipping between the pulley and belt.
TOOTHED PULLEY / TIMING BELT
Ever-power pulleys that focus on engagement transmission
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