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).
Failure analysis of faulty wheel drivers and pinion bearings.
| Identifier | ExFiles\Box 131\4\ scan0116 | |
| Date | 24th March 1937 | |
| 11/3 W/K.{Mr Kilner} Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}/Gry{Shadwell Grylls}5/R.24.3.37. Thank you for your memo, and for the faulty wheel drivers and pinion bearings. With regard to the pinion bearings:- (1) B.75.AE. This bearing appears to have failed in a very short mileage. It also looks as if the failure is primarily due to the balls running off the correct track, which points to mal-alignment in the axle. However, as this customer appears able to fail these bearings quickly, would it be possible to give him a new axle modified to N.Sch.4985, and let us have his old axle back at the Works for examination. (2) B.43.EJ. This bearing again looks as if the balls had been running on the edge of the track. Apart from mal-alignment, this might also be due to the outers not having been nipped up in the assembly, and we presume the marks on one of the cages are due to a ball having been prized out in order to look at the inner track. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||