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. confirming the satisfactory performance of Vacuum 'E.P. Mobiloil' in a 600-hour bearing test.
| Identifier | ExFiles\Box 145\1\ scan0150 | |
| Date | 7th January 1936 | |
| London Office 17. VICTORIA STREET, WESTMINSTER. S.W.1. Telephone: VICTORIA 4278-4279 Telegrams: OFFISLUNDA, SOWEST, LONDON Branch Offices: LONDON, BIRMINGHAM, MANCHESTER, LEEDS, NOTTINGHAM AND- BALL & ROLLER R&M BEARINGS Contractors to H.M. Admiralty, War Office, Air Ministry, Colonial Offices &c. RANSOME & MARLES BEARING Co.. LTD.. MANUFACTURERS OF BALL & ROLLER BEARINGS NEWARK ON TRENT. Our Ref. Tech.Dept. FOH/MB. Your Ref. Telegraphic Address "BEARINGS, NEWARK" Telegraphic Code BENTLEY'S Telephone Nos NEWARK 456-457-458 Branch Offices: SHEFFIELD, BRISTOL, GLASGOW, NEWCASTLE, DUBLIN, BELFAST. The Vacuum Oil Co. Limited, Caxton House, Westminster, LONDON, S. W. 1. 7th January, 1936. For the attention of Mr. Wigfield: Dear Sirs, VACUUM 'E.P. MOBILOIL' With reference to the above, which as you will remember was submitted to us for test as a lubricant for ball bearings, we have tested this on the same rig and under the same conditions as for other E.P. oils, on a 30 m/m.{Mr Moon / Mr Moore} bearing running at 3,000 r.p.m. and at the end of a 600-hour run we find that the lubricant is in an entirely satisfactory condition; that it has adequately lubricated the bearing, and that no signs of hardening or gumming up have been noted. We would therefore confirm that from the bearing point of view this lubricant is in every way satisfactory, and trust this information will fully cover your requirements. Yours faithfully, RANSOME & MARLES BEARING CO. LTD. MANAGING DIRECTOR. | ||