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).
Analysis of bearing lubrication suggesting the repositioning of oil feed holes to improve performance under maximum load.
| Identifier | ExFiles\Box 141\2\ scan0227 | |
| Date | 22th July 1940 | |
| - 5 - Cont'd.{John DeLooze - Company Secretary} Rm{William Robotham - Chief Engineer}/TAS.{T. Allan Swinden}I/ML.22.7.40. We would suggest that for the maximum loads indicated, the maximum oil pressures in the bearing will be roughly as seen below. MAX. OIL PRESSURE. MAX. BEARING LOAD. B A OIL SUPPLY LINE. It will be seen that under these conditions one of the oil feed holes comes very nearly opposite a point of maximum oil pressure. If it be accepted that the oil should be introduced to the bearings at points of minimum pressure - and we suggest that this is the correct procedure - this feed hole A would be of greater use if it could be moved round until it came diametrically opposite the feed hole B. In this way the lubrication might be improved without the introduction of grooves to a bearing on which the loading is already high. Rm{William Robotham - Chief Engineer}/TAS.{T. Allan Swinden} | ||