Design
The design of a plain bearing depends on the type of motion the bearing must provide. The three types of motions possible are:
- Journal (friction, radial or rotary) bearing: This is the most common type of plain bearing; it is simply a shaft rotating in a bearing. In locomotive applications a journal bearing specifically referred to the plain bearing once used at the ends of the axles of railroad wheel sets, enclosed by journal boxes.
- Linear bearing: This bearing provides linear motion; it may take the form of a circular bearing and shaft or any other two matching surfaces (e.g., a slide plate).
- Thrust bearing: A thrust bearing provides a bearing surface for forces acting axial to the shaft.
Read more about this topic: Plain Bearing
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