Ceramic sliding bearings
In addition to roller bearings, slide bearings are the most commonly used bearings in machines, pumps and similar equipment. Sleeve bearings are used wherever space is limited and where the design demands movement that is stable yet flexible and with as little friction as possible.
Consider when there is direct contact of rotating machine components, wear on the bearing contact surfaces inevitably limits bearing life. A distinction is made between simple plain bearings and hydro-dynamic / hydrostatic bearings - that is to say those with forced lubrication. Attention must be paid to friction, middle bearing pressure, load range (Sommerfeld number), storage temperature, relative bearing play, buckling sensitivity and risk level.