plain bearings

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
35 mm x 55 mm x 25 mm NSK 35FSF55 plain bearings	40 mm	10,8 kN	17	5,85 kN
320 mm x 460 mm x 230 mm LS GEH320HC plain bearings	35 mm	72	27 mm	27 mm
Toyana TUP2 300.50 plain bearings	15.9 mm	63.5 mm	25.4 mm	Standard
8 mm x 19 mm x 12 mm ISO GE8XDO plain bearings	62	16 mm	0,9 mm	62 mm
AST SIBP16S plain bearings	102 mm	18	41,5 mm	81,5 kN
AST AST50 56IB60 plain bearings	0.9687 in	9370 lbf	0.07 in	3.96 in
AST AST40 2010 plain bearings	36 mm	190 mm	15 °	phenolic resin
SKF PCMW 629002 E plain bearings	1.46	-	100 mm	142
AST AST40 2015 plain bearings	10	0,12 Kg	30x55x10	30
INA GE25-SX plain bearings	35 mm	35x64x37	NTN	37 mm
INA GE6-DO plain bearings	84.6	8	81	0.0
AST AST850SM 5050 plain bearings	37 mm	2 mm	263 kN	NSK