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Dayco Incorporated, formerly known as Dayco Products and Mark IV Industries, is an American parts supplier for construction, automotive, and industrial companies. [1] The companies annual earnings are approximately US$150 million. [ 1 ]
A pulley is a wheel on an axle or shaft enabling a taut cable or belt passing over the wheel to move and change direction, or transfer power between itself and a shaft. A sheave or pulley wheel is a pulley using an axle supported by a frame or shell (block) to guide a cable or exert force.
Conveyor belts; Chair lift and gondola lift cables; Certain wood trusses, such as the beam tensioner truss picture below. [5] [6] Fencing made of wire, such as electric fences, barbed-wire fences, and chainlink fences often include tensioning devices to keep them taut.
A dumb pulley can lift very large masses a short distance. It consists of two fixed pulleys of unequal radii that are attached to each other and rotate together, a single pulley bearing the load, and an endless rope looped around the pulleys. To avoid slippage, the rope is usually replaced by a chain, and the connected pulleys by sprockets.