The experimental work carried out was aimed at developing a testmethod that was able to consistently produce micropitting damageand could discriminate between a good oil (i.e., one that rarelyproduces micropitting in service) and a poor oil (i.e., one thatdoes produce micropitting in service). The disc rig control systemallows test parameters such as entrainment velocity, contact stressand slide/roll ratio at the disc/roller contacts to be accuratelyand independently controlled. This enables the effect of keyparameters to be studied in isolation, which is something thatcannot be easily achieved using conventional gear test rigs. A testprocedure has been developed which provides a good level ofrepeatability and discrimination between oils. In addition, a studyof the effect of slide/roll ratio (SRR) has shown that the severityof micropitting damage increases as SRR increased, whereas at 0%SRR no micropitting occurred, and, at negative SRRs, microcrackingoccurred, but not micropitting. This is the way that SRR seems toaffect micropitting in gears.
- Edition:
- 07
- Published:
- 10/01/2007
- Number of Pages:
- 13
- File Size:
- 1 file , 470 KB
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