Throughout this site we use many technical terms, and given the breadth of readership our site enjoys, sometimes we are remiss and incorrectly assume everyone knows what we are referring to. For those that do not, here are some explanations of the technical terms use.
An arrangement whereby a rotating component can be carried on either a matching stationary component, or one moving at a different speed, with the minimum of friction. Bearings may be of the ball, roller or plain type, the former being used when there is no constant, positive lubrication. On a plain bearing, the facing surfaces are normally of different metals separated by a film of oil.