Plain bearings
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.
![AST AST50 12FIB16 plain bearings](https://m.kohsamuihotels.org/uploaded_images/d12660-ast-ast50-12fib16-plain-bearings.jpg)
- AST AST50 12FIB16 plain bearings
- 50 mm
- 6300 kgf
![INA GE380-DW plain bearings](https://m.kohsamuihotels.org/uploaded_images/d12667-ina-ge380-dw-plain-bearings.jpg)
- INA GE380-DW plain bearings
- 7 mm
- Without Snap Ring
![AST GEC320HT plain bearings](https://m.kohsamuihotels.org/uploaded_images/d12667-ast-gec320ht-plain-bearings.jpg)
- AST GEC320HT plain bearings
- 12 mm
- 2150 lbf
![AST AST11 5020 plain bearings](https://m.kohsamuihotels.org/uploaded_images/d12660-ast-ast11-5020-plain-bearings.jpg)
- AST AST11 5020 plain bearings
- 15 mm
- 2150 lbf
![AST AST800 8050 plain bearings](https://m.kohsamuihotels.org/uploaded_images/d12667-ast-ast800-8050-plain-bearings.jpg)
- AST AST800 8050 plain bearings
- 1.2500 in
- 2150 lbf
![AST AST650 455535 plain bearings](https://m.kohsamuihotels.org/uploaded_images/d12669-ast-ast650-455535-plain-bearings.jpg)
- AST AST650 455535 plain bearings
- 12 mm
- 2150 lbf
![AST AST090 12080 plain bearings](https://m.kohsamuihotels.org/uploaded_images/d12668-ast-ast090-12080-plain-bearings.jpg)
- AST AST090 12080 plain bearings
- 50 mm
- With Snap Ring
![AST AST20 16IB16 plain bearings](https://m.kohsamuihotels.org/uploaded_images/d12660-ast-ast20-16ib16-plain-bearings.jpg)
- AST AST20 16IB16 plain bearings
- 1-3/4 in
- 4000 psi
![45 mm x 68 mm x 32 mm ISO GE45UK-2RS plain bearings](https://m.kohsamuihotels.org/uploaded_images/d12668-45-mm-x-68-mm-x-32-mm-iso-ge45uk-2rs-plain-bearings.jpg)
- 45 mm x 68 mm x 32 mm ISO GE45UK-2RS plain bearings
- 200 mm
- Non-Separable
![Timken 140FSH230 plain bearings](https://m.kohsamuihotels.org/uploaded_images/d12670-timken-140fsh230-plain-bearings.jpg)
- Timken 140FSH230 plain bearings
- 100 mm
- Cast Iron
![LS SQ14-RS plain bearings](https://m.kohsamuihotels.org/uploaded_images/d12667-ls-sq14-rs-plain-bearings.jpg)
- LS SQ14-RS plain bearings
- 2.2500 in
- 053893070704