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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Improving ball bearing reliability by fitting rigid cages to prevent foreign matter contamination.

Identifier  ExFiles\Box 20\7\  Scan003
Date  27th June 1911 guessed
  
(3)

gauze or the felt washer.

I attach sketches showing what I mean. I think that if we fitted rigid cages and effectually prevented foreign matter from getting in the races we should have no more trouble with ball bearings.

With regard to the standing order, will you advise me if you think we should use a more rigid and better fitting type of cage.

I am sending you one of each kind of cage to show you the difference.
  
  


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