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.




Bearing Number Bore Dia Outer DIa Width Size
BOSTON GEAR CB-2856 Plain Bearings 0.64 kg 16 mm 98 mm 200 °C
BOSTON GEAR CB-2844 Plain Bearings Bearings with Housin Flange Type Yes (with retaining 8 Days
BOSTON GEAR CB-2456 Plain Bearings [Steel] Steel 8 Days Available Deep Groove Ball Bea
BOSTON GEAR CB-2836 Plain Bearings 0.6 mm 0.4 Hz 42 mm 4.76 Hz
BOSTON GEAR CB-2840 Plain Bearings 2.8 in 0.0827 24700 lbf Stamped Steel
BOSTON GEAR CB-2440 Plain Bearings Standard / Dust Resi Metric Series Rubber Seal Type Standard
BOSTON GEAR CB-2448 Plain Bearings Radial [Steel] Steel Metric System C3
BOSTON GEAR CB-2436 Plain Bearings METRIC 668.6 0.134 230.89 mm
BOSTON GEAR CB-2432 Plain Bearings 144 mm 0.97 kg 12mm 14 mm
BOSTON GEAR CB-2040 Plain Bearings M16 SCOU211-32 PG211N- 16.8 Nm
BOSTON GEAR CB-2048 Plain Bearings Flat High tensile brass Type B (Standard Typ Double Row
BOSTON GEAR CB-2232 Plain Bearings Double 64 Deep Groove Ball Bea No