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
16 mm x 18 mm x 25 mm INA EGB1625-E40 plain bearings	419.1 mm	298.3 N·m	0.75 in	SAFS 522
4 mm x 14 mm x 4 mm NMB RBT4 plain bearings	440.000 mm	1100 rpm	Two Shields	410000 N
AST AST20 22050 plain bearings	85.9 kN	86.519 mm	54.769 mm	4 x 3/4-10 UNC
115 mm x 180 mm x 98 mm NTN SA4-115B plain bearings	1.41	5.3 cm³	82.22 mm	150 N
100 mm x 160 mm x 85 mm IKO GE 100GS plain bearings	37500 N	1.50 mm	55.000 mm	1.00 mm
25 mm x 47 mm x 31 mm INA GIKFL 25 PB plain bearings	24.322 mm	7.5 mm	80 mm	6300 r/min
AST AST40 1012 plain bearings	48800 N	One Seal	45.000 mm	39000 N
220 mm x 370 mm x 82 mm LS GX220T plain bearings	4.763 mm	52.5 kN	0.75 in	2 x 5/8-11 UNC
180 mm x 260 mm x 105 mm SKF GE 180 TXA-2LS plain bearings	44.5 kN	30.163 mm	2 x LOR 100	22.225 mm
210 mm x 215 mm x 100 mm SKF PCM 210215100 M plain bearings	127 mm	193.675 mm	6.12 kg	66.675 mm
Toyana TUP1 200.80 plain bearings	35.000 mm	21.00 mm	80.0000 mm	6000 rpm
107,95 mm x 168,275 mm x 94,463 mm NTN SA2-68B plain bearings	Two Shields	700 rpm	360.000 mm	440000 N