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Thread: Hole in axle

  1. #1
    Join Date
    Oct 2008
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    Default Hole in axle

    I am using some old riding lawnmower axle shafts in my new welding cart.
    I inserted them in the ends of .065 wall, 1 inch square tubing.
    I drilled and tapped a hole to 1/4 x 20 thread, for a set screw.
    I need to make a depression, or hole for the set screw to fit into.

    My drill dosen't seem to make a dent in it, will my end mill do it?
    What other methods are available?
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  2. #2
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    Default

    Why not just weld them on?

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  3. #3
    Join Date
    Sep 2005
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    Cool

    Drill a 3/8" hole in the tubing and plug weld them...Bob
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  4. #4
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    Oct 2008
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    Oregon
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    Default

    I'm allowing for a future wheel width change and will need to adjust the length, that's why I don't want to weld it.
    Millermatic 211 AutoSet w/MVP
    Century 110 volt 90/110 MIG-Gone to my son, in Texas
    Victor SuperRange OA
    Milwaukee Cold Cut Saw
    Milwaukee Portable Deep Cut Bandsaw
    Milwaukee Hole Hawg
    Jet Horizontal/Vertical Bandsaw
    Jet MD-18 Mill Drill
    Orbit Drill Press
    12 Ton Floor Press
    2002 E-350 V-10:
    1983 F-150 4.9L 6
    2004 Honda ST1300
    2007 Suzuki LTA400F Quad
    1997 Suzuki DR650

  5. #5
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    Default

    Mark the axle & then use your grinder to make a flat spot on it for the set screw.
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  6. #6
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    Default

    Your end mill should be able to handle it.
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  7. #7
    Join Date
    Oct 2008
    Location
    Oregon
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    Default

    Thanks .
    Millermatic 211 AutoSet w/MVP
    Century 110 volt 90/110 MIG-Gone to my son, in Texas
    Victor SuperRange OA
    Milwaukee Cold Cut Saw
    Milwaukee Portable Deep Cut Bandsaw
    Milwaukee Hole Hawg
    Jet Horizontal/Vertical Bandsaw
    Jet MD-18 Mill Drill
    Orbit Drill Press
    12 Ton Floor Press
    2002 E-350 V-10:
    1983 F-150 4.9L 6
    2004 Honda ST1300
    2007 Suzuki LTA400F Quad
    1997 Suzuki DR650

  8. #8
    Join Date
    Jan 2009
    Location
    Cleveland, TN
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    229

    Default

    Quote Originally Posted by ligito View Post
    I am using some old riding lawnmower axle shafts in my new welding cart.
    I inserted them in the ends of .065 wall, 1 inch square tubing.
    I drilled and tapped a hole to 1/4 x 20 thread, for a set screw.
    I need to make a depression, or hole for the set screw to fit into.

    My drill dosen't seem to make a dent in it, will my end mill do it?
    What other methods are available?
    Sounds like hardened material to me (drill rod, oil hardened, thompson shaft) You can either grind it, or use a SOLID carbide bit on a slow speed to drill it.
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  9. #9
    Join Date
    Feb 2008
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    868

    Default

    Those axle shafts are case hardened up to the splines.

    Drilling it would be just like drilling through the shackle of a padlock.

    Use a Dremel and grind the dimple or use a carbide bit. A HS end mill will bite, walk, then shatter. You could use a carbide tile drilling bit in a drill press.

    About 3/16" deep, it's much softer.

    But I think you will have trouble holding it with a setscrew.

    80% of failures are from 20% of causes
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  10. #10
    Join Date
    Oct 2008
    Location
    Oregon
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    193

    Default

    I read the last post after my HS end mill bit, walked, then shattered, on both ends.

    I don't have any carbide end mills yet.
    I ground a flat but would feel safer with a dimple, or hole, so I guess I better get a carbide 5/16 end mill.
    Millermatic 211 AutoSet w/MVP
    Century 110 volt 90/110 MIG-Gone to my son, in Texas
    Victor SuperRange OA
    Milwaukee Cold Cut Saw
    Milwaukee Portable Deep Cut Bandsaw
    Milwaukee Hole Hawg
    Jet Horizontal/Vertical Bandsaw
    Jet MD-18 Mill Drill
    Orbit Drill Press
    12 Ton Floor Press
    2002 E-350 V-10:
    1983 F-150 4.9L 6
    2004 Honda ST1300
    2007 Suzuki LTA400F Quad
    1997 Suzuki DR650

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