ANSI/AGMA 2003-C10 Rating the Pitting Resistance and Bending Strength of Generated Straight Bevel@ Zerol Bevel and Spiral Bevel Gear Teeth This standard specifies a method for rating the pitting resistance and bending strength of generated straight bevel@ zerol bevel and spiral bevel gear teeth. A detailed discussion of factors influencing gear survival and a calculation method are provided.