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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).
Composition and production methods for aluminium alloy bearings.

Identifier  ExFiles\Box 115\3\  scan0055
Date  23th September 1937
  
1020
RHC.{R. H. Coverley - Production Engineer}
Rm.{William Robotham - Chief Engineer}
Hs{Lord Ernest Hives - Chair}
Hl
Hs{Lord Ernest Hives - Chair}/JWW

Sardl

BY.29/N.23.9.37.

ALUMINIUM ALLOY BEARINGS.

Referring to your memo RHC.{R. H. Coverley - Production Engineer}1/MJ.20.9.37, I have discussed the above matter with Hl. and Hs{Lord Ernest Hives - Chair}/JWW. and I did not realise until the discussion took place, the amount of material used to obtain the bearings.

After thoroughly discussing all the aspects of the case, we decided for Hl. to slightly modify the composition of the Ingot material, as this will assist JWW. in re-melting, and in no way affects the ultimate bearings. This should reduce the scrap material.

In regard to the production of bearings from 'pots', this is being carried on as the original bearings for which the standardisation sheet was issued, were produced in this manner.

I consider it is most important we should find a more economic method of producing the bearings, and JWW. stated a number of bearings had been cast, and passed to the Exp. Dept. and I have asked Rm.{William Robotham - Chief Engineer} to issue a report on these if tests have been carried out, and if not, to arrange for tests to be made as soon as possible.

In regard to the Ingot material as received from High Duty Alloys, we are arranging for Mr Robinson to come to the Works and discuss this.

We believe when the points referred to above have been cleared up, you will be in a position to produce bearings with greater efficiency than at the present time.

BY.{R.W. Bailey - Chief Engineer} By

P.S.
The modification to the composition consists of keeping the magnesium to the upper limit.
  
  


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