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
125 mm x 180 mm x 125 mm LS GEEW125ES-2RS plain bearings	1.4375 in	Cast Iron	Two-Bolt Base	Set Screw
IKO POS 4EC plain bearings	Tapered Roller	2.1654 in	AV	3.4803 in
88,9 mm x 93,663 mm x 63,5 mm SKF PCZ 5640 E plain bearings	2.4375 in	10-5/16 in	5.9063 in	8-1/2 in
110 mm x 180 mm x 100 mm ISB GEG 110 ES 2RS plain bearings	2-3/4 in	197 kN	5-1/4 in	10.8 kN
25 mm x 29,6 mm x 31 mm ISO SIL 25 plain bearings	75 mm	6750 kgf	159 mm	4900 kgf
82,55 mm x 130,175 mm x 123,825 mm LS GEWZ82ES-2RS plain bearings	2.3750 in	9000 lbf	6.5000 in	Contact with Flinger
ISB TAPR 708 DO plain bearings	HCS2	-	-	-
110 mm x 160 mm x 70 mm ISO GE110DO-2RS plain bearings	1 in	Maximum of +800 °F	1-3/16 in	75000
AST AST40 2820 plain bearings	Spring Loaded Heavy Contact	Click here	10-1/2 in	662327443566
AST AST50 SP2.5 plain bearings	2.5000 in	Single Concentric Collar	4.7700 in	Non-Expansion Bearing (Fixed)
LS SIGEW20ES plain bearings	1.3125 in	2150 lbf	3.9375 in	1080 lbf
SKF SIL25C plain bearings	1.1250 in	4410 lbf	3.2500 in	2540 lbf