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 testing of 5/16 inch and 1/2 inch roller bearings and suggesting further high-load tests.
| Identifier | WestWitteringFiles\A\May1917\ Scan7 | |
| Date | 22th May 1917 | |
| To EFC. from R.{Sir Henry Royce} c. to J.{Mr Johnson W.M.} c. to By.{R.W. Bailey - Chief Engineer} ORIGINAL D 4 R5/B19:5:17. 22 MAY 1917 RECEIVED X.2093 RE ROLLER BEARINGS. X. 1445 With reference to the test on roller bearings, the small 5/16" rollers and our own ½" rollers should have been made of exactly the same steel with the same heat treatment. Another point which may cause the variation is the number of rollers that can be got into the various bearings. The third thing to do would be to take some of the high loads, round about say 3 tons, and see which type of roller promises to give the longest life. Evidently the bearings are amply big enough for the load in either design. R.{Sir Henry Royce} | ||