Bearing parts

The bearing in its current form was developed towards the end of the 19th century. It was initially made by hand.

Nowadays, bearings are one of the most commonly used machine parts because their rolling motion make almost all movements easier and they help reduce friction.

As discussed earlier, there are three basic types of engine bearings – connecting rod bearings, crankshaft main bearings, and camshaft bearings. The backing material (body of the bearing that contacts stationary parts) for engine bearings is normally steel.

A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts.

The simplest form of bearing parts, the plain bearing, consists of a shaft rotating in a hole. Lubrication is used to reduce friction.