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).
Correcting a report on a preloaded pinion bearing failure for a 6.B.IV rear axle.
| Identifier | ExFiles\Box 102\4\ scan0136 | |
| Date | 21th March 1938 | |
| Sg.{Arthur F. Sidgreaves - MD} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Hs.{Lord Ernest Hives - Chair} By.{R.W. Bailey - Chief Engineer} Da.{Bernard Day - Chassis Design} Hdy.{William Hardy} GWH.{George W. Hancock - Head Chateauroux} REAR AXLE - 6.B.IV. Further to By.2/0.15.2.38 in which it is stated that the .005" preloaded pinion bearing had failed, we now know that this is not the case. We had the bearing dismantled by the makers (it is sprung together). The tracks were polished to remove inclusions from the broken roller bearing and the bearing is again running in 6.B.IV. The preload had fallen from .005" to .003" which is in line with what happened on the test rig run of 500 hours. We expect another half thou. of preload to vanish and then no more. Our chief interest in this bearing is to find something better to fit in the existing space for use at Depots. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||