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.
Read more about Plain Bearing: Design, Materials, Lubrication, Related Components
Famous quotes containing the words plain and/or bearing:
“They say it’s worse to be ugly. I think it must only be different. If you’re pretty, you are subject to one set of assaults; if you’re plain you are subject to another.”
—Alix Kates Shulman (b. 1932)
“Rosenbloom is dead.
The tread of the carriers does not halt
On the hill, but turns
Up the sky.
They are bearing his body into the sky.”
—Wallace Stevens (1879–1955)