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Just a question about buying "involute" or "hob" gear cutters. I see specifications for: 1. Class "AA" "A" "B" Ground profile & "C" 2. IS, BS, DIN and ASA Can anyone point me to or explain what these options are when buying a gear cutter and what are the most commonly used? Thanks in...

Thankyou for your replys. They have been most helpful Andrew

Thanks For The Information Provided So Far. I question I am asking is how does one decide what DP cutter to purchase. For example say I want a 2:1 reduction gear, the larger blank being 4 inch OD. Diametral Pitch = (Teeth + 2) ÷ Outside Diameter 6 = (22 + 2) / 4 6 = (11 + 2) / 2.166 11 =...

Help with DP (Diametral Pitch)? Browsing catalogs on involute gears I see the sizes are quoted in dp and module, how does someone starting out decide what cutters to purchase? I imagine many parameters have to be taken into acount such as diameter, material, torque just to name a few. A...