Page 3 of RBC Roller Brochure by RBC Bearings

precisely guided cylindrical rollers the use of precisely guided rollers dramatically improves all aspects of cylindrical roller cam follower performance the dynamic load capacity maximum running speed and fatigue life are greatly enhanced see the charts below for specific data regarding these improvements lower performance needle roller cam followers rely on rolling elements that have reduced load capacity they are also subject to more rolling resistance and generate higher operating temperatures these unfavorable operating characteristics are the result of comparatively small roller diameter reduced load capacity and poor roller guidance resulting in skewing excessive frictional heat and reduced fatigue life v rbc roller latest technology v needle roller older technology the best seals in the business advanced rbc roller sealing technology provides long-term protection for the rolling element system without effective sealing even the performance of rbc s precision roller guidance and cylindrical roller technology would be diminished the contact lip seals provide sealing effectiveness for the cam follower s full operating life by keeping grease inside the cam follower and contaminants away from the rolling elements rbc roller contact lip seals provide a lubed for life product latest rbc roller seal design old style needle roller cam follower gap seal comparison of dynamic capacity 150000 10000 9000 120000 8000 7000 90000 cam follower speed limit rbc roller cam followers needle bearing cam followers rbc roller cam followers needle bearing cam followers rpm lbf 6000 5000 4000 3000 60000 30000 2000 1000 1 1.25 1.5 1.75 2 2.5 3 3.5 4 5 6 7 0 0 1 1.25 1.5 1.75 2 2.5 3 3.5 4 5 6 7 cam follower size roller o.d cam follower size roller o.d this chart shows the superior load capacity of the rbc roller cam follower rbc roller cam followers operate at speeds up to 2 times higher than needle roller cam followers www.rbcbearings.com 800.390.3300 3

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