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  1. bmech21

    gear hardness RA

    Yes, they are carburized gears. Looks like I should review my hardness tests. Thanks!
  2. bmech21

    gear hardness RA

    I am reviewing some prints for helical and spiral bevel gears that my company purchases. Under "Heat Treat" the prints state "Harden Teeth to 80-83 RA" The only Ra I am familiar with is Roughness Average. Does anyone know what RA is under heat treatment? Thanks

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