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  1. #1
    Join Date
    Mar 2008
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    nowra
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    Default ER 32 or ER 40 collet chuck

    i want to get a collet chuck for my mill but not sure if i should get an er 32 or an er 40 i there any significant size difference in the two .

  2. #2
    Join Date
    Jul 2010
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    Melbourne
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    Default

    What mill and what taper do you have welder?
    This thread maybe of interest
    http://www.woodworkforums.com/f65/le...6/#post1279380

    Stuart

  3. #3
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    Mar 2008
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    nowra
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    Default

    ow my mill spindle has a mt3 taper

  4. #4
    Dave J Guest

    Default

    The 32 is the most popular in home shops, because the 40 hangs out a lot. If you have a large mill and need the 25mm capacity go for the 40.

    Dave

  5. #5
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    Melbourne
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    Default

    With MT3, I would think the 32 was the way to go, but that comes from a guy that hasn't gotten around to buying one for himself yet.

    Having said that I had a bad night on ebay so might need to buy me something so I feel better.

    Stuart

  6. #6
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    Mar 2008
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    nowra
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    Default

    well i only have a mill drill and seeing a picture of the size difference between the two i think i will go with er32 i can always buy an er40 with 1inch collet later if i need to use the 1 inch end mills i have.

  7. #7
    Dave J Guest

    Default

    Good choice, I would go for the ER32. You maybe able to find or make a MT3 end mill holder for the 25mm ones.

    Something like this



    Dave

  8. #8
    Join Date
    Nov 2006
    Location
    Heidelberg, Victoria
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    79
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    2,074

    Default

    Nice work Dave assuming you made those. How do you get the bore spot on?

    Drill and bore or ream?

    Ken

  9. #9
    Dave J Guest

    Default

    Those ones are not mine Ken, but I made half dozen last year of similar shape for lathe centre drills (another thread I was going to put up, will try to get it done)

    The ones I made hold different size centre drills. Their about 130-150mm long so they reach across the cross slide easy, and there quick and easy to put in and out instead of using a drill chuck.
    When I made them I just held the bar in the chuck and machined the MT3 first. Then removed the chuck turned them around and put them in the lathe spindle with a MT5 to MT3 reducer, drilled the hole and machined the outside to shape. The pressure from drilling keeps them held firmly in the MT, and a live centre was used to hold them while I machined the outside.
    As I said above I will get some pictures and post them up, they are easy made but a real time saver.

    Dave

  10. #10
    Dave J Guest

    Default

    This is the site I got the picture from
    9x20 Lathe Collet & Jawed Spindle Chucks
    I just typed in end mill holder looking for a picture to show Welder, and it was the first good picture that popped up.

    Dave

  11. #11
    Join Date
    Mar 2008
    Location
    nowra
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    1,598

    Default

    hi im going off topic but dont want to start a new thread bu currently the mill spindle is wobbling i think it the drill chuck but not sure how can i check this
    BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE

    Andre

  12. #12
    Dave J Guest

    Default

    If you have a dial test indicater, you can mount it so the contact point is touching the inside of the spindle taper. You could also mount a standard one touching the outside of MT shank mounted in the spindle a few mm away from the end of the spindle.
    With either test you are looking for any variation in the needle movement.

    Dave

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