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
12,7 mm x 22,225 mm x 11,1 mm SIGMA GEZ 008 ES plain bearings	112 mm	119 mm	122 mm	3,200 rpm
AST AST20 3020 plain bearings	31171531	0.93	45	0.26
13 mm x 15 mm x 20 mm SKF PCM 131520 E plain bearings	AST	22230CK	1,300,000	73
AST ASTB90 F25080 plain bearings	2.1 mm	48 mm	2.1 mm	48
30 mm x 34,8 mm x 37 mm ISO SA 30 plain bearings	30234	5 mm	680 kN	170
Toyana TUF1 10.120 plain bearings	72 mm	ISO	NF248	240 mm
AST AST650 759080 plain bearings	25	17 mm	25	NSK
6 mm x 19 mm x 6 mm NMB MBY6VCR plain bearings	ISB	20 mm	15	52
AST AST40 1020 plain bearings	16 mm	100 mm	1.0 mm	6500 r/min
25 mm x 47 mm x 31 mm INA GAKR 25 PB plain bearings	Felt Type	431 lb	6.0 in	17.2 in
AST GEH180XT-2RS plain bearings	22,2	14,3 mm	50,8 mm	14,3
80 mm x 130 mm x 75 mm SIGMA GEH 80 ES plain bearings	62 mm	30	10 °	GE 032/62 XES