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).
Comparison of frictional torques between a Hoffmann journal bearing and an R & M double thrust bearing.
Identifier | ExFiles\Box 94\2\ scan0052 | |
Date | 2nd November 1936 | |
Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} FILE X328 2.11.36. BALL BEARING THRUST TESTS _G.56227 HOFFMANN_ _GB.2035 R.{Sir Henry Royce} & M.{Mr Moon / Mr Moore}_ To compare the relative merits of the above as thrust bearings (the Hoffman bearing was an ordinary journal type), whilst the R & M.{Mr Moon / Mr Moore} was a double thrust type bearing) the outer races were fixed, and a dead load of 3000 lbs. applied to the inner race of each type of bearing. The frictional torques measured under these conditions were:- GB.2035 R & M.{Mr Moon / Mr Moore} 12 lbs.ins. G.56227 Hoff. 19.5 lbs.ins. W.Bell. | ||