belt idler pulley

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• idler pulley — noun a pulley on a shaft that presses against a guide belt to guide or tighten it • Syn: ↑idle pulley, ↑idle wheel • Hypernyms: ↑pulley, ↑pulley block, ↑pulley block, ↑block * * * noun …   Useful english dictionary

• idler pulley — [1] The pulley in a rear derailleur that stays farthest from the freewheelcogs and functions to keep tension on the chain of a bicycle. [2] A small pulley located about half way from the front to back of a long chain such as found on a tandem… …   Dictionary of automotive terms

• idler pulley — noun Date: circa 1890 a guide or tightening pulley for a belt or chain …   New Collegiate Dictionary

• idler pulley — /ˈaɪdlə pʊli/ (say uydluh poolee) noun a loose pulley made to press or rest on a belt in order to tighten or guide it …  

• idler — [īd′lər, īd′ l ər] n. 1. a person who wastes time and does no work; lazy person 2. a gear placed between two others to transfer motion from one to the other without changing their direction or speed: also idler gear or wheel or idle wheel 3. a… …   English World dictionary

• Belt (mechanical) — For other belts, see Belt (disambiguation). A pair of vee belts …   Wikipedia

• pulley — [1] A grooved wheel carrying a string, rope, chain, or belt which turns the wheel. [2] Flat wheel with a V groove. When attached to a drive and drive members, the pulley provides a means for driving the compressor. See camshaft pulley crankshaft… …   Dictionary of automotive terms

• belt tensioner — A device consisting of an idler pulley which is usually located between the drive and driven pulleys. It can be adjusted to increase the tension on the belt. See seat belt tensioner timing belt tensioner …   Dictionary of automotive terms

• belt drive — Pair of pulleys attached to usually parallel shafts and connected by an encircling flexible belt (band) that can serve to transmit and modify rotary motion from one shaft to the other. Most belt drives consist of flat leather, rubber, or fabric… …   Universalium

• Idler — Idle I dle, a. [Compar. {Idler}; superl. {Idlest}.] [OE. idel, AS. [=i]del vain, empty, useless; akin to OS. [=i]dal, D. ijdel, OHG. [=i]tal vain, empty, mere, G. eitel, Dan. & Sw. idel mere, pure, and prob. to Gr. ? clear, pure, ? to burn. Cf.… …   The Collaborative International Dictionary of English

• idler — [1] A gearwheel between a driving and a driven gear in a gear train which may serve to reverse the original direction of rotation of the driven wheel. [2] A free turning pulley or wheel which serves to maintain tension in a belt drive. Also see… …   Dictionary of automotive terms