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MORE BRIDGEPORT M HEAD QUESTIONS

Discussion in 'BRIDGEPORT MACHINES INC. & B'PORT CLONES' started by Currahee26, Aug 10, 2017.

  1. Currahee26

    Currahee26 United States Iron Registered Member

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    Greetings!

    The mill is up and running fine. I have a question about the COLLETS /SPINDLE SIZES. I have a set of collets that are Morse Taper #2 that fit the M head spindle I have. They are limited to 1/2 inch max.

    What device am I looking for that will allow me to use the MT #2 spindle main hole size and drawbar, but use BIGGER milling bits? I'm presuming there is an ADAPTER to do just this sort of upgrade, but I don't know what I'm looking for by NAME. I see spindle CHUCK adapters but they don't tell me much as to how they are used. (On eBay) I have a MT keyed Jacobs drill bit chuck but it is limited in size and accuracy. It is NOT drawbar tightened.

    Any suggestions or mfg names/styles I am looking for?
    Thanks
    Dave
     
  2. Technical Ted

    Technical Ted United States Active Member Active Member

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  3. markba633csi

    markba633csi United States Active Member Active Member

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    You could also get a MT2 to ER collet chuck and just buy the collet sizes you need. May have to make a new drawbar.
    ER25 goes to 5/8"
    ER32 goes to 3/4" I think
    Mark
     
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  4. Currahee26

    Currahee26 United States Iron Registered Member

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    WOW!< Great information! I had an idea this is what I wanted but could never find an adequate description of these adapters to pull the trigger on.

    Thanks gentlemen for your help and information
    Dave
     
  5. Ron1939

    Ron1939 United States Swarf Registered Member

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  6. Technical Ted

    Technical Ted United States Active Member Active Member

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    There's a set screw in the holder to hold tools in place. One tip when ordering these is to make sure you get ones with the correct draw bar thread, because they also come in metric threads... mine is 3/8"-16.

    Ted
     
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  7. Silverbullet

    Silverbullet Active Member Active Member

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    Hi welcome to the site. The er32 will work well and is easier then changing the morse collets . Nice little mill will do lots of work , make a fly cutter to use , every mill needs one . Easy project and can be made in lots of ways.
     
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