scope:

This information sheet provides a set of equations for the calculation of bevel gear top land and guidance on cutter edge radius. It integrates the equations in ANSI/AGMA ISO 23509, Bevel and Hypoid Gear Geometry, and Gleason publication SD3124B, Formulas for Cutter Specifications and Tooth Thickness Measurements for Spiral Bevel and Hypoid Gears, with modifications to include face hobbing, and additions for the top land calculations for non-generated manufacturing methods, to achieve compatibility between publications.

It is intended to provide assistance in completing the calculations requiring determination of top lands and cutter edge radii in ANSI/AGMA 2003, Rating the Pitting Resistance and Bending Strength of Generated Straight Bevel, Zerol Bevel and Spiral Bevel Gear Teeth.

Annexes are provided for additional related information and calculation examples.