BEARING INDUSTRIA CUSCINETTI S.P.A.

NSK 6200 Bearing

 

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.

4 mm x 8 mm x 4 mm  skf PSM 040804 A51 Plain bearings,Bushings
4 mm x 8 mm x 4 mm skf PSM 040804 A51 Plain bearings,Bushings
PT INTERNATIONAL
N/A
35 mm x 45 mm x 40 mm  skf PSM 354540 A51 Plain bearings,Bushings
35 mm x 45 mm x 40 mm skf PSM 354540 A51 Plain bearings,Bushings
CONSOLIDATED BEARING
B04120
31.75 mm x 35,719 mm x 19,05 mm  skf PCZ 2012 M Plain bearings,Bushings
31.75 mm x 35,719 mm x 19,05 mm skf PCZ 2012 M Plain bearings,Bushings
N/A
3.543 Inch | 90 Mill
22 mm x 25 mm x 25 mm  skf PCM 222525 E Plain bearings,Bushings
22 mm x 25 mm x 25 mm skf PCM 222525 E Plain bearings,Bushings
M06110
0662461347324
20 mm x 23 mm x 15 mm  skf PCM 202315 M Plain bearings,Bushings
20 mm x 23 mm x 15 mm skf PCM 202315 M Plain bearings,Bushings
1.952
PT INTERNATIONAL
100 mm x 105 mm x 50 mm  skf PRMF 10010550 Plain bearings,Bushings
100 mm x 105 mm x 50 mm skf PRMF 10010550 Plain bearings,Bushings
Round
Triple Lip
20 mm x 28 mm x 20 mm  skf PSMF 202820 A51 Plain bearings,Bushings
20 mm x 28 mm x 20 mm skf PSMF 202820 A51 Plain bearings,Bushings
M06110
N/A
25 mm x 28 mm x 15 mm  skf PRMF 252815 Plain bearings,Bushings
25 mm x 28 mm x 15 mm skf PRMF 252815 Plain bearings,Bushings
Steel
45MM Bore 1; 47MM Bo
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Plain bearings,Bushings
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