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), 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.



A plain bearing, also known as a bushing, is a mechanical element used to reduce friction between rotating shafts and stationary support members. Typically, a bushing relies on soft metal or plastic and an oil film to support the rotating shaft on the hardened shaft journal.




BOSTON GEAR CB-2032 Plain Bearings

3.7 Nm 89 mm
UC206-20G2T20 11.2 kN

BOSTON GEAR CB-2036 Plain Bearings

Ball No
Standard No

BOSTON GEAR CB-2028 Plain Bearings

16 mm 19 mm
49.2 mm 2.23 kg

BOSTON GEAR CB-1648 Plain Bearings

Thrust Standard
Steel Iron plate punching

BOSTON GEAR CB-1640 Plain Bearings

Double Available
628 DD (Contact Rubber S

BOSTON GEAR CB-1636 Plain Bearings

5.17 Hz 120 °C
1.5 mm 7.83 Hz

BOSTON GEAR CB-1624 Plain Bearings

6 9.8
52100 Bearing Steel None

BOSTON GEAR CB-1632 Plain Bearings

Silicone J7
No Cast Iron

BOSTON GEAR CB-1628 Plain Bearings

0.28 in 168
1.1875 in 0.153

BOSTON GEAR CB-1422 Plain Bearings

0.64 kg 100 °C
60 mm FLE205N-

BOSTON GEAR CB-1232 Plain Bearings

Bearing Steel Cylindrical Bore Set
No 17800

BOSTON GEAR CB-1240 Plain Bearings

Split Cylindrical Ex 2-3/16 in
5.2 in 1.25 in