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  • Users: tterb83
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  1. tterb83

    pitch dia question

    So I have a set of gears teeth:76 MOD: 3 Pressure Angle: 20 deg pitch dia: 9.444 tooth angle: 18.1* (LH/RH) gear lash: .003-.003 pin dia: .204 Over pins: 9.7269/9.7244 these are in a very old machine and the center distance is measuring: 9.460 we have a lot of other machines out there where...
  2. tterb83

    Helical gear design

    I am working on designing a gearbox I am trying to determine what the optimal helix angle I need is and what the optimal face length should be. besides noise reduction what advantage/disadvantage is there with increasing the helix angle? between say 15deg-20deg. is there an optimal face length...

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