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).
Continuation of a list of approved lubricants, detailing the test specifications for axles.
| Identifier | ExFiles\Box 114\1\ scan0185 | |
| Date | 22th February 1939 | |
| APPROVED LUBRICANTS (CONTINUED) It is understood that the lubricants tested were representative samples of the products to be sold under the designated trade names, but no responsibility is assumed by the Gleason Works in this regard. If any change is made in the lubricants in order to change viscosity, pour test, etc., a re-check should be made on the lubricant. The usual specifications of lubricants, such as pour test, viscosity, etc., were not investigated as these properties are settled upon by the lubricant and axle manufacturers. It is, of course, essential in any gear drive that all bearings be of ample capacity, and that the lubricant be free from any lapping agents. - - - - - - - - - TEST SPECIFICATIONS Two standard production axles are used for test. Failure in either axle is considered a failure of the oil. Speed of Drive Shaft - Equivalent to car speed of approximately 25 miles per hour. Load - Corresponds to maximum demand of second gear operation. Operation - Run on coast load with reverse rotation for 8 hours. Stopped for inspection at the end of two hours. Axle oil temperatures maintained under 200° F.{Mr Friese} to correspond to maximum road temperatures. NOTE: This list supersedes all lists previously dated. GLEASON WORKS ROCHESTER, N. Y., U. S. A.{Mr Adams} February 22, 1939 EZG/ggd | ||