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).
Letter to a bearing company regarding the design and testing of pinion bearings.
| Identifier | ExFiles\Box 114\2\ scan0196 | |
| Date | 8th October 1935 | |
| X1020 Exptl. Dept. HS{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}12/KW. 8th October, 1935. F.O. Hickling, Esq., The Ransome & Marles Bearing Co. Ltd., Newark-on-Trent. Dear Hickling, Thank you very much for your letter of the 7th. The rivets in the Oilite cage will be a long way clear of the bearing housing. We hope you will be able to send us the bearings for test in the near future. As regards the lubrication slots you are now fitting in the Bentley pinion bearing, there is a well in the casting just above the split in the bearing and a hole through the housing, so that oil thrown from the crown wheel collects in the well and finds its way through the slots into the bearing. We ran a test on a pinion assembly in which the bearing had been assembled absolutely dry, and found that with the present lubrication by splash from the pinion, no oil had reached the thrust cage after 20 minutes' running at 1,000 revs., whereas on trying a bearing with slots oil was pouring out of the thrust half after a few seconds' running. Yours sincerely, FOR ROLLS-ROYCE LIMITED. | ||