Abstract
The "LogiX" tooth profile making up for some demerits of Involute tooth profile excelled in surface durability and wear-abrasion resistance because of many points on the tooth profile having being zero relative curvature and specific sliding. The usage of this tooth profile can expand the application fields of P/M gears which have been limited in the past due to their lower surface durability and wear-abrasion resistance. Furthermore, it makes possible to use conventional material in exchange for expensive high strength material and to eliminate the heat treatment process. This report will show a characteristic of "LogiX" tooth profile, basic properties and the application on it to oil pump gears. This profile is now under the application in mass production for the Diesel Engine Oil Pump gears.
