A plain bearing is simply two surfaces sliding against each other.

Plain bearings, in general, are the least expensive type of bearing.

Integral plain bearings are built into the object of use.

The locomotives with plain bearings also had the longer wheelbase.

The simplest example of a plain bearing is a shaft rotating in a hole.

Other components that are commonly used with plain bearings include:

A plain bearing may or may not be a discrete device.

The Mille used a plain bearing crank, like the belt models.

Plain bearings handle contamination well and often do not need seals/scrapers.

The materials are commonly used for self-lubricating plain bearings or electrical contacts.

Solid polymer plain bearings are low weight, corrosion resistant, and maintenance free.

Most plain bearings have a plain inner surface, however some are grooved.

Self-lubricating plain bearings have a lubricant contained within the bearing walls.

Pillow block: These are standardized bearing mounts designed to accept plain bearings.

The eccentric shaft runs on plain bearings, which were better than rollers for heat dissipation.

The design of a plain bearing depends on the type of motion the bearing must provide.

Solid plastic plain bearings are now increasingly popular due to dry-running lubrication-free behavior.

The crankshaft was a 6-throw design with 8 plain bearings and a double row ball thrust bearing between the front two.

Plain bearings were used for the big end bearings and the centre main bearings.

The crankshaft ran in four plain bearings.

Only plain bearings have as wide use as rolling-element bearings.

Only plain bearings are used as widely as rolling-element bearings.

With suitable lubrication, plain bearings often give entirely acceptable accuracy, life, and friction at minimal cost.

Crankshaft Counterbalanced two piece with 8 plain bearings & 2 main roller bearings.

Plain bearings (plastic versions) do not require oil or lubrication (often it can be used to increase performance characteristics)