Self-lubrication of PEEK polymer bearings in rolling contact fatigue under radial loads

► For this research we produced PEEK (polyether ether ketone) polymer radial bearing by lathe machining. ► We performed rolling contact fatigue tests under dry conditions. ► We found that PEEK self-lubrication occurs during bearing work in contact with alumina balls. ► PEEK bearings achieved long bearing life through self-lubrication. ► We managed to determine the optimal load range for PEEK polymer radial bearing work.