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Investigations on the Scuffing Resistance of High-Speed Gears

90FTM08

Test results with a high speed four square gear test rig (nmax = 26 000 rpm) show the influence of speed, viscosity, base oil, type, and amount of additive on the scuffing load. In some cases at high speed the scuffing load can be more than twice the value calculated according to ISO/DIS 6336/4. The reason for the speed-dependency of the scuffing load is explained by the kinetics of the chemical reaction between the metal and the additive. It is described, how a calculation method could take account of the high scuffing load at high speed.
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