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).
Comparative test request for a double-row ball bearing for the Eagle XVI reduction gear.
| Identifier | ExFiles\Box 42\2\ Scan001 | |
| Date | 19th October 1925 | |
| To Hs.{Lord Ernest Hives - Chair} from AJS. c. to CJ. RG.{Mr Rowledge} X3838 AJS2/M19.10.25. RE. EAGLE XVI. REDUCTION GEAR. X.3159 X.4114 X.4116 X.3838 The following is a comparative test we wish you to make to determine the relative load capacities with r.p.m. of a New Departure double row ball bearing, with a plain ordinary type thrust race, as used say in direct drive Condor. This experiment which is extremely urgent in view of the position of E.16., should we consider be made with a No. 215.ND. double row bearing, having - A bore ............ 75 mm. Outside dia. ...... 130 mm. Width ............ 1.437"mm. and contains 17 balls, and should be run at revs. of say 1,800., and carry an end load of say 3,500 lbs., and compared with an ordinary type thrust washer bearing as used on Condor direct drive. MADE AT CROXLEY AJS. | ||