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R&M 5804CN Thrust Bearing

Dave Hoatson

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While working on a set of three R&M ceiling fans for a Baltimore restaurant, the spacing of the thrust bearing balls caught my attention. 

At first, it looked like there was a manufacturing defect, as the balls were not spaced consistently. 

And, the wear patterns on the outer races were rather wide, making me think that the bearing shifted around in use. 

But, now I see: the balls are positioned in a spiral pattern. This spreads the wear out over a much larger area, maybe pulls the grease into the bearing (yes, grease, a common thing with R&M’s), and maybe even makes the bearing run quieter. 



Edited by Dave Hoatson
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