Word forms: (regular plural) plain bearings
(Automotive engineering: Vehicle components, Engine, transmission, and exhaust) A plain bearing is a shaft bearing in which a shaft rotates lubricated by an oil or grease.
⇒ Plain bearings are not suitable for high-speed heavy loading situations. ⇒ In heavy-duty applications, the upper plain bearing is replaced by a tapered roller bearing that takes both radial and thrust loads. ⇒ Most modern motorcycles have plain bearing crankshafts which require a high pressure oil supply.
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