DIN ISO 14635-1:2006-05

DIN ISO 14635-1 describes a test method based on an FZG four-square test machine to determine the relative load carrying capacity of lubricating oils defined by the gear surface damage known as scuffing. High surface temperatures due to high surface pressures and sliding velocities can initiate the breakdown of the lubricant films. This test method can be used to assess such lubricant breakdown under defined conditions of temperature, sliding velocity and load. The FZG test method A/8,3/90 for relative scuffing load carrying capacity of oils is typical for the majority of applications in industrial and marine gears.