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Beraing cam lock

3

37chief

Well-known Member
Location
California
Bearing with set screws that dog into a shaft there is no issue on how they are secured. Then bearings with cam lock retainers, should the cam lock ring be tightened the rotation of the shaft, or opposite rotation of the shaft, or makes no difference? Stan
 
Opposite. This is the way it was explained to me; the shaft turns the locking collar and the locking collar turns the bearing.

Al old farm implement dealer who sold New Idea corn pickers told me New Idea was having a problem with certain bearings loosening up in their pickers. One of the guys on the assembly line was tightening the collars in the direction of rotation instead of opposite and the bearings we're loosening up.
 
If the shaft is stationary, and the bearing Outer Race turns (as in an idler), the collar should be tightened opposite rotation of the OR. This is the same answer looked at from a different direction. Jim
 
Think about it. If the shaft turns the collar then you would have to tighten in direction of turning shaft to have it tighten on bearing.
 
F Belgium, has a fair description of the relationship of the bearing pieces but I will add this. Think about the inner race of the bearing and its reaction to the motion of the shaft if it is loose on the shaft. Take a ring on a finger and spin it. Now think about how the set screw virtually holds the lock collar and shaft together as a unit. Now with a little thought one can easily determine why driving the eccentric collar tight the direction of shaft rotation is correct.
 
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