An analysis of the effects of the lubricating grease type and the rotational speed upon operating temperature in sealed roller bearings

Abstract

This paper presents an analysis of the effects of the type of lubricating grease and rotational speed on sealed roller bearings. The research was performed under controlled conditions. The experiments were all carried out on bearings of the same type, 6204, with approximately the same degree of radial play. Testing was performed across a range of rotational speeds from 2500 to 10 000 min-. Each test was performed throughout a range of speeds until the operating temperature was stabilised, that is until thermal equilibrium was achieved within the bearing housing. The results of this analysis will be of assistance to designers in the selection of an appropriate lubricant for bearings, depending on the rotational speed.