Timing Belts

Because slippage inside synchronous components is prohibited by your belt drive system requirements, a timing belt and timing pulley combination must be used. Often called gear belts or synchronous belts, timing belts contain teeth on one or both sides that mate with idlers or pulleys that are compatible with them. The tooth pitches of HTD (High Torque Drive) belts are 3M, 5M, 8M, 14M, and 20M, which are metric pitch sizes.  For low to moderate torque, trapezoidal teeth are used in trapezoidal timing belts. A round tooth profile is used in HTD (curvilinear) timing belts to enhance contact surface area and reduce stress.  A hybrid synchronous belt, Super Torque (STS) timing belts are made to operate at higher torques and speeds because of a notch in the tooth that fits STS pullets. STS belts allow the pulley to operate more efficiently than ordinary timing belts because they combine a round tooth with a flat profile bottom. In practically every vehicle power transmission application, the crucial synchronous drive pulley is used, and Maxtran offers more than 1 million timing belt configurations and sizes to suit every task!