Plain bearings

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A plain bearing, or more commonly sliding bearing and slide bearing (in railroading sometimes called a solid bearing, journal bearing, or friction bearing[citation needed]), 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.

Bearing Number	Bore Dia	Outer DIa	Width	Size
AST AST20 1515 plain bearings	3.9375 in	Non-Expansion Bearing (Fixed)	6.6300 in	Labyrnith non-contacting, non-purging seal with DuPont™ Teflon®
57.15 mm x 90.488 mm x 50.013 mm SKF GEZ 204 ES-2LS plain bearings	3-11/16 in	Non-Expansion Bearing (Fixed)	7.6100 in	Labyrinth with Flinger
SKF LPAT 30 plain bearings	1.0000 in	Contact with Slinger	1.7656 in	3-57/64 in
AST AST090 30060 plain bearings	2.4375 in	7 in	4.0625 in	5-3/4 in
AST AST50 76IB48 plain bearings	3.1875 in	3.7500 in	12.3000 in	Non-Expansion Bearing (Fixed)
AST AST850SM 6550 plain bearings	5/16 in	Sintered Bronze Oil-Impregnated	5/8 in	CT-1000-K26, SAE841
AST AST50 11IB14 plain bearings	4.5625 in	Exceptional Bearing Protection, Rotating Applications, Pumps, Gearboxes, Motors, Energy Efficient Applications, Primary Metals Industry, Steel Industry, Aluminum Industry, Pulp and Paper Industry, Che	Labyrinth	3926904590.US
5 mm x 13 mm x 8 mm INA GIKR 5 PB plain bearings	9 mm	1140 lbf	13 mm	30000 RPM
180 mm x 260 mm x 128 mm LS GEH180HC plain bearings	1.1875 in	4-1/4 in	2.3750 in	4 in
20 mm x 35 mm x 16 mm IKO GE 20ES-2RS plain bearings	IKO	GE 20ES-2RS	1 pcs	Negotiable
20 mm x 40 mm x 20 mm NMB MBYT20V plain bearings	1.4375 in	5820 lbf	3.6250 in	3460 lbf
AST AST650 202820 plain bearings	Triple Ring	Click here	10-1/2 in	662327946708