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Record pace breaking thumb pins

Discussion in 'Compact Excavators' started by PeterG, Apr 27, 2021.

  1. tantoy

    tantoy Well-Known Member

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    Jul 14, 2012
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    Tacoma, Wa
  2. Tugger2

    Tugger2 Senior Member

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    Mar 22, 2018
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    British Columbia
    Make the pin solid with 4340 heat treated /stress relieved material .Then have it induction hardened . Install grease fittings in the pin bosses ,problem solved. Most machine shops will recognize those instructions if you need someone to do it for you. They can make bushings and heat treat them or you can go to a bearing house and size Torrington bearing races as bushings if your dealer cant supply you for the stick end .
     
  3. lantraxco

    lantraxco Senior Member

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    Jan 1, 2009
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    Elsewhen
  4. Tugger2

    Tugger2 Senior Member

    Joined:
    Mar 22, 2018
    Messages:
    923
    Location:
    British Columbia
    Looks like they have done a good job on bushing selection.