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.

15 mm x 17 mm x 12 mm skf PPMF 151712 Plain bearings,Bushings
Lubrication Groove &
N/A
95 mm x 100 mm x 60 mm skf PCM 9510060 M Plain bearings,Bushings
SCHAEFFLER GROUP
0.34
50 mm x 55 mm x 30 mm skf PCM 505530 M Plain bearings,Bushings
2 Bolt Flange Block;
1/2 Inch
180 mm x 185 mm x 100 mm skf PCM 180185100 M Plain bearings,Bushings
33
8483.20.40.80
95 mm x 110 mm x 100 mm skf PWM 95110100 Plain bearings,Bushings
M06110
PT INTERNATIONAL
8 mm x 14 mm x 8 mm skf PBMF 081408 M1 Plain bearings,Bushings
360.000 mm
1580000 N
18 mm x 25 mm x 30 mm skf PBM 182530 M1G1 Plain bearings,Bushings
Standard
TIMKEN
55 mm x 60 mm x 25 mm skf PCM 556025 M Plain bearings,Bushings
S1U406-HC-107
Dual Piston Ring Sea
152,4 mm x 157,163 mm x 76,2 mm skf PCZ 9648 E Plain bearings,Bushings
Roller Bearings
0637410068230
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Deep groove ball bearings
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Plain bearings,Bushings
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SAF and SAW pillow blocks with bearings on an adapter sleeve
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Timken 6461a Bearing
Timken Lm503349 Bearing
Jl69310 Timken Bearing
Timken 1729 Bearing