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The diameter of a caster wheel affects how easily the caster moves over particulate, rough or irregular surfaces. Large diameter caster wheels are able to bridge gaps like that between the floor and an elevator car. However, the larger the diameter of a caster wheel, the higher the caster support arm must be.
12.7 mm = 0.5 inch width, 38° pulley angle imperial belts B: 17 mm: 11 mm: 40° 16.5 mm = 21/32 inch width, 38° angle imperial belts C: 22 mm: 14 mm: 40° 22.2 mm = 7/8 inch width, 38° angle imperial belts D: 32 mm: 19 mm: 40° 31.75 mm = 1.25 inch width, 38° angle imperial belts E: 38 mm: 25 mm: 40° 38.1 mm = 1.5 inch width, 38° angle ...
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.
[2] 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.
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A conveyor pulley is a mechanical device used to change the direction of the belt in a conveyor system, to drive the belt, and to tension the belt. Modern pulleys are ...
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Riding a caster board requires using a twisting motion of hips and legs. A rider or "caster boarder" gains speed because each wheel is mounted on a 30° slant on the bottom of each deck. When each deck is pushed to the side, it causes the board to be pushed upward by the wheels' rotation against the gradient of the mounts.
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