Gear Technology Magazine
www.geartechnology.com/articles/20038-effects-of-axle-deflection-and-tooth-flank-modification-on-hypoid-gear-stress-distribution-and-contact-fatigue-life

Effects of Axle Deflection and Tooth Flank Modification on Hypoid Gear Stress Distribution and Contact Fatigue Life

August 1, 2009
As is well known in involute gearing, “perfect” involute gears never work perfectly in the real world. Flank modifications are often made to overcome the influences of errors coming from manufacturing and assembly processes as well as deflections of the system. The same discipline applies to hypoid gears.