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).
Suitability of a Hoffmann journal bearing for the torque tube and propeller shaft.
| Identifier | ExFiles\Box 49\1\ Scan366 | |
| Date | 15th July 1921 | |
| R.R. 235e (to T.) (S.H. 95S. 22/2/21.) Hm. {Capt. W. Hallam - Head Repairs} 598S/S. X.4150 Hs. {Lord Ernest Hives - Chair} from BY. {R.W. Bailey - Chief Engineer} BY4-P15.7.21. [STAMP] FO 16 [STAMP] RECEIVED X 3455 TORQUE TUBE & PROPELLER SHAFT. With reference to the capability of the Hoffmann Number 365 Journal Bearing to resist end thrust, I wrote Mr Cooper, of the Hoffmann Company, their Technical Manager, in regard to this and attach copy of his reply. Personally I am of the opinion that it will be extremely difficult to control the end play of the bearing in the method proposed, as I am inclined to think the Journal bearing will wear under the end thrust effects, with the result that a small amount of diametral wear will mean a fairly large movement, under which conditions the bearing will be allowed to run tight into mesh on the over-run and produce the noise and condition to which we object. BY. {R.W. Bailey - Chief Engineer} By | ||