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. Ltd. regarding road and overload testing on rear axle pinion bearings.
| Identifier | ExFiles\Box 114\2\ scan0036 | |
| Date | 17th April 1934 | |
| LONDON OFFICE: 17, VICTORIA STREET, WESTMINSTER, S.W.1 TELEPHONE: VICTORIA 4278-4279 TELEGRAMS: OFFISBLUNDA, BOWEST, LONDON X3807 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, SHEFFIELD BRISTOL, GLASGOW, NEWCASTLE, BELFAST IN YOUR REPLY PLEASE QUOTE TECH.DEPT. FOH/MB. YOUR REF. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}2/KW. GRY{Shadwell Grylls} Messrs. Rolls-Royce, Limited, D E R B Y . 17th April, 1934. FOR THE ATTENTION OF -. GRYLLS ESQ: Dear Sirs, REAR AXLE PINION BEARINGS With reference to your valued communication of the 11th instant, regarding the above, we wish to thank you for the additional details regarding the road test carried out on the 3/MDJT.30 bearing, and are carrying out a 500-hour test on the 4/MDJT.30 bearing as requested. With regard to the load which we shall apply during this test, it will be remembered that the loads on the 100-hour tests have represented 100% overload, and while it is quite possible that we could run for 500 hours with this loading, we would prefer to run at 75% overload for the first test, after which we will make any additional overload tests as may appear desirable. As this test is also one required to be primarily concerned with the serviceability of the | ||