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
SKF 6201 Bearing 1-1/4 in 2540 lbf 2.835 in Contact
AST AST090 19590 plain bearings 3.4375 in 3.4100 in 13.5000 in Expansion Bearing (Floating)
Toyana SI05T/K plain bearings 2.9375 in 3.3800 in 10.8300 in Non-Expansion Bearing (Fixed)
101,6 mm x 106,363 mm x 95,25 mm SKF PCZ 6460 E plain bearings 70 mm 2.9900 in 12.4400 in Non-Expansion Bearing (Fixed)
28 mm x 50 mm x 28 mm NMB MBT28V plain bearings 20 mm Without Snap Ring 47 mm C0
25 mm x 42 mm x 25 mm LS GEEW25ES-2RS plain bearings 1.4375 in 5820 lbf 3.6250 in 3460 lbf
320 mm x 440 mm x 160 mm INA GE 320 DO plain bearings 0.4375 in 650 lb .9060 in Grease
420 mm x 600 mm x 300 mm ISB GE 420 CP plain bearings 2.6250 in 41900 lbf 1.1420 in Uncoated
INA GE800-DW-2RS2 plain bearings 1.2500 in 3460 lbf 4.1406 in Contact with Flinger
100 mm x 160 mm x 85 mm ISO GE 100 XES plain bearings 1.1875 in 4410 lbf 3.5625 in 2540 lbf
AST GEC480HCS plain bearings 2.5000 in 2.9000 in 10.2500 in Non-Expansion Bearing (Fixed)
AST AST850BM 10060 plain bearings 50 mm 144.5 mm 84.1 mm 114.3 mm