a loose pulley made to press or rest on a belt in order to tighten or guide it.
a freely rotating trolley used to control the tension or direction of a belt Also called idler
[ahyd-ler] /ˈaɪd lər/ noun 1. a person who passes time in a lazy or unproductive way. 2. Machinery. an , wheel, or pulley. 3. Railroads. an empty freight car placed under the projecting end of a long object carried by the next car, so that the latter can be connected with another part of the […]
[ahyd-les] /ˈaɪd lɛs/ noun 1. .
noun, Machinery. 1. a wheel for transmitting power and motion between a driving and a driven part, either by friction or by means of teeth. 2. . noun 1. a gearwheel interposed between two others to transmit torque without changing the direction of rotation to the velocity ratio Also called idler
[ahyd-l-wahyld] /ˈaɪd lˌwaɪld/ noun 1. former name of .