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 discussing the testing of a 30mm pinion bearing and the performance of its steel cage.
| Identifier | ExFiles\Box 114\2\ scan0070 | |
| Date | 15th October 1934 | |
| RANSOME & MARLES MANUFACTURERS OF BALL & ROLLER BEARINGS NEWARK ON TRENT London Office: VICTORIA STREET, WESTMINSTER, S.W.1. Telephone: VICTORIA 4278-4279 Telegrams: OFFISIRUNDA, SOWEST, LONDON Branch Offices: LONDON, BIRMINGHAM, MANCHESTER, LEEDS, NOTTINGHAM AND- Contractors to H.M. Admiralty, War Office. [Sticker 1] TWENTY-EIGHTH INTERNATIONAL MOTOR EXHIBITION OCT 11 to 20 GARAGE EQUIPMENT SECTION OPENS OCT 15 OLYMPIA OUR STAND No. 426 Gallery [Sticker 2] Machine Tool and Engineering Exhibition Nov. 8-24 OLYMPIA GRAND AND EMPIRE HALLS WE ARE EXHIBITING Our Ref. Tech.Dept.FOH/EMB Your Ref. Hsp/djy/HW. Exptl. Dept. 15th October, 1934. Messrs. Rolls-Royce, Limited, D E R B Y. GRY{Shadwell Grylls} Dear Sirs, FOR THE ATTENTION OF - GRYLLS ESQ. With reference to your valued communication of the 28th ultimo, regarding the Bently 30 mm. pinion bearing, we note your remarks, and can, of course institute a run of 100 hours to the steel cage, although we have not up to the moment instituted this test. In reviewing the position, you will remember that we carried out a test on one of these bearings with a steel cage and a run of only nine hours was obtained, it being remembered that the wear was primarily on the outside diameter of the inner, while these conditions were repeated on your own load test, where after 1,000 hours, similar wear on the inner was encountered. In view of these results and the discussion during Mr. Hickling's visit of the 26th March last, it was decided that the steel cage was undesirable from every point of view, and we still feel that the position is much the same as before, particularly in view of the fact that on our test we have had no trouble with duralumin cages excepting where the lubricant has been unsatisfactory. With the strengthening we still feel that duralumin should be adhered to, and in our last | ||