A plain bearing is the simplest type of bearing, comprising just a bearing surface and no rolling elements. Therefore the journal (i.e., the part of the shaft in contact with the bearing) slides over the bearing surface. The simplest example of a plain bearing is a shaft rotating in a hole. A simple linear bearing can be a pair of flat surfaces designed to allow motion; e.g., a drawer and the slides it rests on or the ways on the bed of a lathe.
Plain bearings, in general, are the least expensive type of bearing. They are also compact and lightweight, and they have a high load-carrying capacity.
Other articles related to "plain bearing, bearing, plain bearings, bearings":
... A plain bearing is simply two surfaces sliding against each other ... A rotary stage built with this type of bearing is usually only used for coarse positioning and is adjusted manually simply by turning the platform ...
... Other components that are commonly used with plain bearings include Pillow block These are standardized bearing mounts designed to accept plain bearings ... system used to keep fluid from leaking out of a pressurized system through the plain bearing ...
... Like any bearing, a dovetail slide is composed of a stationary linear base and a moving carriage ... Capable of long travel, dovetail slides are more resistant to shock than other bearings, and they are mostly immune to chemical, dust and dirt contamination ...
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