Catalogue RBC Roller® Cam Followers
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Needle Roller Cam Follower
Previous Generation Design and Performance
Long, small diameter needle rollers mean lower load capacity, limited speed, and higher operating temperatures.The
The seals act as thrust washers and /\ provide outer ring / \ guidance
combination of minimal grease charge volume and more rapid lubricant degradation mean that relubrication is required for even moderate service life.
1
■
in
J
Needle Roller Cam Follower
—\^
Single Row Needle Rollers
Larger number of small diameter rollers result in lower load rating and reduced fatigue life.
Gap Seals
These seals are designed to fill the gap between outer ring shoulder and the end ring (see above illustration).This results in substantial frictional and thrust loads on seal surfaces that can lead to rapid wear.
Minimal Grease Retention Volume
End-guided needle rollers tend to skew during normal operation. This can result in excessive heat generation, which can lead to deterioration of the already limited grease supply.
The only available area for grease charge is between the rollers. Cam follower life is directly related to effective lubrication. Relubrication of needle roller cam followers is required to maximize life.
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