Specification :

-Description
Rubbing surfaces, usually with lubricant; some bearings use pumped lubrication and behave similarly to fluid bearings.
-Friction
Depends on materials and construction, PTFE has coefficient of friction ~ 0.05-0.35, depending upon fillers added
-Stiffness
Good, provided wear is low, but some slack is normally present
-Speed
Low to very high
-Life
Low to very high - depends upon application and lubrication
-Cautions
Widely used, relatively high friction, suffers from stiction in some applications. Depending upon the application, lifetime can be higher or lower than rolling element bearings.