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         We, TEC BELTING COMPANY, the subsidiary of TEC GROUP INC. are one of the biggest suppliers in China who specializes in the manufacture of all kinds of Power Transmission Belts and Conveyor Belts, including Industrial Belt, Agricultural Belt, Automotive Belt, Motorcycle Belt, Fabri…

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Pulley

A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable, rope or belt along its circumference. Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit power. In nautical contexts, the assembly of wheel, axle, and supporting shell is referred to as a "block."

A pulley may also be called a sheave or drum and may have a groove or grooves between two flanges around its circumference. The drive element of a pulley system can be a rope, cable, belt, or chain that runs over the pulley inside the groove or grooves.

Hero of Alexandria identified the pulley as one of six simple machines used to lift weights. Pulleys are assembled to form ablock and tackle in order to provide mechanical advantage to apply large forces. Pulleys are also assembled as part of belt and chain drives in order to transmit power from one rotating shaft to another.