What information is necessary to specify a SPIRAL bevel gear summary?
These notes will help you specify a summary for a No. 26 Gleason Machine set up using the SJF VERSACUT ® method. (Let us know if you are interested in other methods or summaries for other Gleason spiral/hypoid machines.) The same gear data required for a straight gear (see above) is required for a spiral gear; i.e. Teeth, Pitch, Pressure Angle, Shaft Angle, and Gear System. Additionally, you need the following: (1) AGMA Quality No. – Backlash is determined by AGMA gear quality number. Backlash is Determined for AGMA No. 6 if not otherwise specified. (2) Spiral Angle – This angle has limited range, but is typically specified as 30 or 35 degrees on the print. Spiral angle is determined at design for a number of factors including noise and strength. (A Zerol gear is a special case of spiral gear with 0 degree spiral angle.) (3) Hand (RH or LH) – Specify hand of Pinion (or gear). Spiral members are always opposite handed. Hand (RH or LH) is selected at design to optimize gear strength b
