BEARING INDUSTRIA CUSCINETTI S.P.A.

Plain bearings,Bushings

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.

Integral plain bearings are built into the object of use as a hole prepared in the bearing surface. Industrial integral bearings are usually made from cast iron or babbitt and a hardened steel shaft is used in the bearing.

Integral bearings are not as common because bushings are easier to accommodate and can be replaced if necessary.Depending on the material, an integral bearing may be less expensive but it cannot be replaced. If an integral bearing wears out, the item may be replaced or reworked to accept a bushing. Integral bearings were very common in 19th-century machinery, but became progressively less common as interchangeable manufacture became popular.

For example, a common integral plain bearing is the hinge, which is both a thrust bearing and a journal bearing.

170 mm x 190 mm x 200 mm skf PWM 170190200 Plain bearings,Bushings
1.563 Inch | 39.69 M
0793699031775
35 mm x 39 mm x 35 mm skf PRMF 353935 Plain bearings,Bushings
0.01
0.0
28 mm x 32 mm x 30 mm skf PCM 283230 E Plain bearings,Bushings
Ball Bearing
0.145
30 mm x 38 mm x 25 mm skf PSM 303825 A51 Plain bearings,Bushings
Extra Light
Ball Bearing
15 mm x 20 mm x 10 mm skf PSM 152010 A51 Plain bearings,Bushings
GARLOCK BEARINGS GGB
0.142
95 mm x 100 mm x 60 mm skf PCM 9510060 E Plain bearings,Bushings
2 Single Cone | 1 Do
8482.20.00.00
20 mm x 28 mm x 20 mm skf PSM 202820 A51 Plain bearings,Bushings
N/A
B04334
28 mm x 32 mm x 30 mm skf PCM 283230 M Plain bearings,Bushings
0 Inch | 0Millimeter
9.8 Inch | 248.9 Mil
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Plain bearings,Bushings
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