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).
Use of square roller bearings in a B.50 type gearbox, replacing previous needle bearings.
| Identifier | ExFiles\Box 112\2\ scan0081 | |
| Date | 17th January 1939 | |
| PV/... [crossed out] c. Rm.{William Robotham - Chief Engineer} 828 DA.{Bernard Day - Chassis Design}1/G.17.1.39. GRH [initials] B.50. TYPE GEAR BOX. Herewith is PD.357 Square Roller Bearings in the second motion shaft, in place of the previous needle bearings. There may be a standard Hoffmann cage sufficiently near the required dimensions to be usable. The plain thrust bearing at the rear end, in reverse, is the doubtful point, as the area is necessarily reduced by comparison with the needle bearing shaft. Testing is required. Details required for experiment. DA.{Bernard Day - Chassis Design} | ||