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
Toyana TUP1 80.100 plain bearings	2.2500 in	11791 lb	4.3307 in	8100 lb
Toyana TUP2 20.20 plain bearings	75 mm	Without Snap Ring	115 mm	C3
AST GE120XT/X-2RS plain bearings	0.5000 in	3-57/64 in	1.7656 in	3-31/64 in
AST GEFZ12C plain bearings	35 mm	2150 lbf	130 mm	1080 lbf
INA GE22-ZO plain bearings	0.5000 in	2150 lbf	3.0000 in	1080 lbf
950 mm x 1250 mm x 400 mm ISO GE950DO plain bearings	1.8750 in	Cast Iron	18 in	Setscrew
AST AST11 F35260 plain bearings	3.2500 in	Maximum of +250 °F	1.7500 in	Chrome Steel
25 mm x 42 mm x 23 mm ISB T.P.N. 325 plain bearings	2.0000 in	5220 lbf	Cast Iron - Nickel Protection	PF1
AST ASTEPB 4044-30 plain bearings	1.3750 in	3.6250 in	PTFE	0.7500 in
AST ASTT90 9550 plain bearings	4.0000 in	39000 lbf	9.5313 in	31500 lbf
5 mm x 13 mm x 8 mm INA GIKFR 5 PW plain bearings	2.2500 in	053893021935	0.8640 in	0.89 lb
AST AST090 1825 plain bearings	55 mm	2150 lbf	184 mm	1080 lbf