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
AST AST650 WC30 plain bearings	1.00 mm	21200 N	22900 N	8000 rpm
AST ASTT90 F6050 plain bearings	6 °	76.2 mm	1500 kN	120.65 mm
AST GEC340HT plain bearings	96.5 mm	e7	115 mm	25 N/mm²
55 mm x 90 mm x 47 mm NTN SA4-55B plain bearings	15.020 kN	31 mm	114.100 kN	392.300 kN
8 mm x 19 mm x 12 mm INA GAKR 8 PW plain bearings	2400 rpm	3.00 mm	280.0000 mm	640000 N
SKF SILKAC18M plain bearings	244.475 mm	15.875 mm	1/8 NPT	1575 r/min
AST GEEW70ES plain bearings	30 mm	260 mm	212 mm	HM 3160
AST GEH300HT plain bearings	10.5000 in	7.750 in	0.060 in	0.12 in
19.05 mm x 22,225 mm x 19,05 mm INA EGBZ1212-E40 plain bearings	47.2 kN	2 x LOR 51	9.25 kN	22.225 mm
Timken 280FS400 plain bearings	2000 kN	2860 kN	1500 kN	240 mm
80 mm x 130 mm x 75 mm ISO GE 080 HCR-2RS plain bearings	409.575 mm	1.6	1.4	2.3
AST AST50 16FIB12 plain bearings	111 kN	133.35 mm	82.804 mm	0.75 in