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 Hoffmann Manufacturing Co. Ltd. regarding instructions for preload clearance on bearings.
| Identifier | ExFiles\Box 153\2\ scan0348 | |
| Date | 7th July 1937 | |
| BRANCHES: LONDON, BIRMINGHAM, MANCHESTER, LEEDS, GLASGOW. AGENTS IN PRINCIPAL COUNTRIES THROUGHOUT THE WORLD. HOFFMANN Registered Trade Mark BALL-AND-ROLLER-BEARINGS STEEL-BALLS-AND-ROLLERS TELEPHONE: 3151 (5 lines) TELEGRAMS: HOFFMANN, CHELMSFORD CODES USED: A.B.C. 5TH EDITION, BENTLEY PHRASE, MARCONI AND WESTERN UNION 5 LETTER. THE HOFFMANN MANUFACTURING Co. LTD. CONTRACTORS TO THE ADMIRALTY, WAR OFFICE AND INDIA OFFICE. CHELMSFORD. MESSRS. ROLLS ROYCE LTD, DERBY. F.J.H. 1300 7th July, 1937. YOUR REF RM{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}17.AP IN YOUR REPLY PLEASE QUOTE OUR REF. JHW/FC Dear Sirs, We thank you for your letter of the 5th July, reference as above. We have noted your instructions and will supply the bearings N.2784 and N.2790 with the preload clearance between the inner races as requested. Will you kindly confirm in due course whether the new figures of .0002" to .0004" are to be permanent. Assuring you of our best attention at all times, We remain, Yours faithfully, THE HOFFMANN MANUFACTURING CO. LTD. | ||