ROLLING BEARING WITH SOLID LUBRICANT

摘要

The raceway surfaces of the inner and outer rings 1 and 2 and the surfaces of the rolling elements 3 are formed with lubricating films 1a, 2a and 3a of polytetrafluoroethylene having average molecular weight of not more than 5000 {PTFE (A)}. PTFE heretofore used for rolling bearings is a polymer having average molecular weight of more than 1x105 mostly 1x106-1x107, but PTFE(A) is very low in shear strength and soft as compared with PTFE polymer.