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.
![85 mm x 135 mm x 74 mm NTN SA4-85B plain bearings](https://m.buc-usap.com/uploaded_images/d8849-85-mm-x-135-mm-x-74-mm-ntn-sa4-85b-plain-bearings.jpg)
- 85 mm x 135 mm x 74 mm NTN SA4-85B plain bearings
- 300 N/mm²
- Double-lip seals
![AST AST850SM 7060 plain bearings](https://m.buc-usap.com/uploaded_images/d8851-ast-ast850sm-7060-plain-bearings.jpg)
- AST AST850SM 7060 plain bearings
- 23048 CCK/W33
- 56.356 mm
![16 mm x 38 mm x 21 mm ISB SSR 16 plain bearings](https://m.buc-usap.com/uploaded_images/d8850-16-mm-x-38-mm-x-21-mm-isb-ssr-16-plain-bearings.jpg)
- 16 mm x 38 mm x 21 mm ISB SSR 16 plain bearings
- 334 kN
- 228.6 mm
![140 mm x 243 mm x 61 mm ISB GX 140 SP plain bearings](https://m.buc-usap.com/uploaded_images/d8847-140-mm-x-243-mm-x-61-mm-isb-gx-140-sp-plain-bearings.jpg)
- 140 mm x 243 mm x 61 mm ISB GX 140 SP plain bearings
- 359.999 mm
- 2 x B10724-159
![63,5 mm x 100,013 mm x 55,55 mm INA GE 63 ZO plain bearings](https://m.buc-usap.com/uploaded_images/d8849-63-5-mm-x-100-013-mm-x-55-55-mm-ina-ge-63-zo-plain-bearings.jpg)
- 63,5 mm x 100,013 mm x 55,55 mm INA GE 63 ZO plain bearings
- 1.73 kN
- 22000 r/min
![88,9 mm x 139,7 mm x 133,35 mm SKF GEZM308ES-2LS plain bearings](https://m.buc-usap.com/uploaded_images/d8853-88-9-mm-x-139-7-mm-x-133-35-mm-skf-gezm308es-2ls-plain-bearings.jpg)
- 88,9 mm x 139,7 mm x 133,35 mm SKF GEZM308ES-2LS plain bearings
- 1.00 mm
- 52.0000 mm
![12 mm x 22 mm x 10 mm ISB SA 12 C plain bearings](https://m.buc-usap.com/uploaded_images/d8852-12-mm-x-22-mm-x-10-mm-isb-sa-12-c-plain-bearings.jpg)
- 12 mm x 22 mm x 10 mm ISB SA 12 C plain bearings
- 45.000 mm
- 31000 rpm
![22 mm x 37 mm x 19 mm NTN SA4-22B plain bearings](https://m.buc-usap.com/uploaded_images/d8851-22-mm-x-37-mm-x-19-mm-ntn-sa4-22b-plain-bearings.jpg)
- 22 mm x 37 mm x 19 mm NTN SA4-22B plain bearings
- 198.438 mm
- 200 mm
![110 mm x 160 mm x 70 mm IKO GE 110ES plain bearings](https://m.buc-usap.com/uploaded_images/d8853-110-mm-x-160-mm-x-70-mm-iko-ge-110es-plain-bearings.jpg)
- 110 mm x 160 mm x 70 mm IKO GE 110ES plain bearings
- 24.00 mm
- 25000 rpm
![300 mm x 305 mm x 50 mm SKF PCM 30030550 E plain bearings](https://m.buc-usap.com/uploaded_images/d8854-300-mm-x-305-mm-x-50-mm-skf-pcm-30030550-e-plain-bearings.jpg)
- 300 mm x 305 mm x 50 mm SKF PCM 30030550 E plain bearings
- 34500 N
- 34.90 mm
![25 mm x 47 mm x 31 mm ISB TSM 25 C plain bearings](https://m.buc-usap.com/uploaded_images/d8847-25-mm-x-47-mm-x-31-mm-isb-tsm-25-c-plain-bearings.jpg)
- 25 mm x 47 mm x 31 mm ISB TSM 25 C plain bearings
- Snap-Ring
- 85.000 mm