Fundamentals of Hypoid Gear Lubrication.

摘要

The CRC L-42 scoring test currently used under the Military Specification MIL-L-2105B has at times showed deficiencies in evaluating the scoring resistance of gear lubricants. The inadequacy of this test method led to the development of a test device and a procedure designed to evaluate the scoring resistance of gear lubricants more accurately. An account is given of the steps in the test development employing special test gears and the CRC reference oils. Data are presented on the precision and repeatability of the test for differentiating the scoring resistance of hypoid gear oils covering a range of performance levels from RGO 104 to RGO 115. An account is given on the development of special test gears for use in developing a test procedure to replace the CRC L-37 load carrying test in cooperation with the National Research Council of Canada. Cooperative efforts are described dealing with the study by the ASTM Research and Development Division VII of the low temperature performance of gear lubricants and with the CRC Oxidation Test Techniques Panel study of a revised Thermal Oxidation Stability Test procedure. Color illustrations reproduced in black and white.