Is it alright to use grease rather than oil to lubricate plain bearings?
” While it is not always the best lubricant choice for a plain bearing, grease is suitable when: • Speed is slow (below 400 rpm for a 2″ bearing; below 50 rpm for an 80″ bearing) • Bearing is subjected to frequent starts, stops or shock-loading conditions • Bearing is inaccessible for relubrication