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 'Radax' type bearings for clutches and comparing bearing standards.
| Identifier | ExFiles\Box 20\7\ Scan107 | |
| Date | 20th July 1921 guessed | |
| Oy2 - G 27621 Sheet #2. (5) Clutch: Use New Departure "Radax" or other large angular contact bearing for spring-thrust and clutch throw out. (Some makers use ordinary deep groove, but the makers do not recommend.) The "Radax" is a deep-groove bearing but with the thrust axis inclined. The purely radial bearings made by New Departure are with entrance slots, but the "Radax" lets them into the deep-groove field, and is therefore quite a specialty of theirs. I may add that we do not have a single radial bearing with entrance slots on the American car; they are all deep-groove, and this type is in millimeter sizes with Hess-Bright (New SKF Industries) and with the U.S.Ball Bearing Co., our present suppliers. No inch size bearings are standard in the U.S. OY. M.{Mr Moon / Mr Moore} Olley | ||