... 620,826000,17KRV 40 PPA4018582014,226,53,11724,522000,25KRV 47 PPA4720662419,441,5530,54319000,39KRV 52 PPA5220662420,946,55,6456419000 ... have an internal design very similar to that of a needle or cylindrical roller bearing.They are characterized by ... running surface is crowned as standard.However, support rollers with a cylindrical (flat) running surface are available for certain applications.These ...