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  • Tips needed for designing deep ratio helical gear pair

    Discussion in 'The main mechanical design forum' started by k.udhay, Sep 19, 2013.

    1. k.udhay

      k.udhay Member

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      Hi,

      For a final drive of a light commercial truck, I have to design a final drive helical gear pair. The expected ratio is 8.2. The centre distance is 134 mm. The input max. torque is 120 Nm. I have sized few combinations.

      I have a feeling that this ratio is too deep. Pl. share me your opinions and views on this. I mainly need few check-points while designing such a deep ratio helical gear pair. Thanks.
       
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    3. mechaboy

      mechaboy Active Member

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      hi
      you mean that gear ratio is 8:2 ?
      center between gears is 134 mm or not?
       
    4. k.udhay

      k.udhay Member

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      Hi Mechaboy,

      The gear ratio is 8.2:1. The centre distance is 134 mm. Thanks.
       
    5. mechaboy

      mechaboy Active Member

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      i suggest you ti use a decimal number for the module of gears,
      what is the material of your gears?
      what you want to do for lubrication?
      what is your bearing arrangement?
       

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