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).
Letter from Ransome & Marles Bearing Co. about bearing design, oil retention in an Oilite cage, and leakage tests.
| Identifier | ExFiles\Box 114\2\ scan0167 | |
| Date | 7th June 1935 | |
| BALL & ROLLER R&M BEARINGS X1020 London Office: 17, VICTORIA STREET, WESTMINSTER, S.W.1. Telephone: VICTORIA 4278-4279 Telegrams: OFFIISLUNDA, SOWEST, LONDON Contractors to H.M. Admiralty, War Office, Air Ministry, Colonial Offices &c. Telegraphic Address: "BEARINGS, NEWARK" Telegraphic Code: BENTLEY'S Telephone Nos: NEWARK 456-457-458 RANSOME & MARLES BEARING Co., LTD., MANUFACTURERS OF BALL & ROLLER BEARINGS NEWARK ON TRENT. Branch Offices: LONDON, BIRMINGHAM, MANCHESTER, LEEDS, NOTTINGHAM AND- Branch Offices: SHEFFIELD, BRISTOL, GLASGOW, NEWCASTLE, DUBLIN, BELFAST. Our Ref. Tech.Dept.FOH/EMB. Your Ref. Hs{Lord Ernest Hives - Chair}/Gry{Shadwell Grylls}/12/KW. Exptl. Dept. S. Grylls, Esq., Messrs. Rolls Royce, Limited, D E R B Y. 7th June, 1935. My Dear Grylls, Many thanks for your letter of the 6th instant, and was glad that the bearings got through to you in time and note the trouble with the small spigot bearing which now explains itself. With regard to the fears of your Designs Dept., regarding the oil in the Oilite cage, it seems to me that they have overlooked the fact that this bearing is only running when the clutch is thrown out and personally I should not imagine it to be necessary for any additional oil retention on the job. Again this would make the bearing even more special than at present which would further increase the cost, but we could of course readily provide some retention either by the same felt arrangement as New Departure or merely by fitting a plain plate, and after the holiday I will lay a scheme out for you. With regard to our test on the New Departure bearing the leakage was mainly through the felt, and while it is of course not possible to be definite, I am almost certain that no leakage whatever occurred between the outerand the shield. Referring to the 35 mm bearing, I am enclosing copy of our drawing B.7436 outlining the overall | ||