ABSTRACT
Gear teeth contacts have been recognized as one of the most complicated applications of tribology. In an earlier review (Radovich, 1984) on gear lubrication, it was pointed out that despite the extensive research in gear lubrication, it has not been possible to reduce the “art” of gear lubrication to a science. There is no good substitute for practical experience in gear design. This situation is gradually changing, mainly due to rapid developments in elastohydrodynamic lubrication (EHL) and the effects on gear tribological failures.
