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  1. #1
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    May 2009
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    melb
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    Default Broken drill chuck

    I have the 18v Bosch blue drill - its probably one of the earlier Li ion versions. The drill is fine but the chuck broke - doesnt spin at all. It has played up over the years after using a 13mm drill bit so its always been a bit dodgy.

    Do I have to replace it with a another bosch chuck or are chucks made to a standard and I get any any? Also have a dewalt NiMH drill which has an awesome chuck - clamps down hard and easy to open would be nice if one of those could be fitted to the Bosch (I heard that the dewalt one is japanese).

    Also broke the screw which clamps the chuck onto the drill, it is a counter sink reverse thread t25 from memory. Any idea where one can get one of those screws! They cant be common

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  3. #2
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    Jan 2010
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    Auckland New Zealand
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    Default

    I've bought spares from these guys before. Might be worth having a look.

    https://www.ereplacementparts.com/

  4. #3
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    Default

    You could try Heidelberg Industrial Supplies, 1/22 Helen St, West Heidelberg. 9459-5747

    www.hiscopowertools.com

    He was able to fix an old B & D Drill for me.
    Tom

    "It's good enough" is low aim

  5. #4
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    Dec 2005
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    Huntington Beach, CA USA
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    Default

    From your description, I would guess that it is the gearing between the motor and the chuck where the problem lies.

    I think that you could buy a whole new unit for the price of repairs.
    Rich

    When SWMBO said "I won't cook in metric."
    The metric system died in the US.

  6. #5
    Join Date
    May 2009
    Location
    melb
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    588

    Default

    Im fairly sure the gears are fine, the drill functions/spins its the locking mechanism on the chuck which is stuck. ive taken the chuck off already just need a new one - would just prefer a different chuck just that the stock one seems pretty flimsy. When I get a chance to get the model number of the drill i've have to search what the part number is for the chuck

  7. #6
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    I had the same problem last year, took it to local electrical repair shop, they advised (with a little prompting) that it couldnt be repaired so lodged a claim on household effects insurance. Paid out $150 to buy a new one. worth a shot.
    Life expectancy would grow by leaps and bounds if green vegetables smelled as good as bacon.

  8. #7
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    Default

    Quote Originally Posted by qwertyu View Post
    Im fairly sure the gears are fine, the drill functions/spins its the locking mechanism on the chuck which is stuck. ive taken the chuck off already just need a new one - would just prefer a different chuck just that the stock one seems pretty flimsy. When I get a chance to get the model number of the drill i've have to search what the part number is for the chuck
    Ah, makes perfect sense now.

    As a suggestion, try soaking the chuck in mineral spirits or paint thinner. Sometimes things get gunk'd up and the soak tends to free things up so that they work freely. Let it sit in the mineral spirits for a day or three.

    As for a source for a chuck, try Bunnings or some other home center. They tend to stock replacement chucks and the threads are fairly standard.
    Rich

    When SWMBO said "I won't cook in metric."
    The metric system died in the US.

  9. #8
    Join Date
    Apr 2002
    Location
    Brisbane
    Posts
    5,791

    Default

    As a general rule drill chucks are a standard thing.
    Back in the day I put generic aftermarket keyless chucks on all my makita cordless. I have also changed chucks on some of my air drills.

    The left hand threded lock screw is also pretty much standard ..... they often get the heads drilled out of them from using double eneded drills.

    If ya gor another good chuck of another drill about the same size ..... BETYA it fits.

    cheers
    Any thing with sharp teeth eats meat.
    Most powertools have sharp teeth.
    People are made of meat.
    Abrasives can be just as dangerous as a blade.....and 10 times more painfull.

  10. #9
    Join Date
    Jan 2019
    Location
    Newcastle, Australia
    Age
    61
    Posts
    1

    Smile

    Quote Originally Posted by qwertyu View Post
    I have the 18v Bosch blue drill - its probably one of the earlier Li ion versions. The drill is fine but the chuck broke - doesnt spin at all. It has played up over the years after using a 13mm drill bit so its always been a bit dodgy.

    Do I have to replace it with a another bosch chuck or are chucks made to a standard and I get any any? Also have a dewalt NiMH drill which has an awesome chuck - clamps down hard and easy to open would be nice if one of those could be fitted to the Bosch (I heard that the dewalt one is japanese).

    Also broke the screw which clamps the chuck onto the drill, it is a counter sink reverse thread t25 from memory. Any idea where one can get one of those screws! They cant be common
    Around 90% of thread mounted chucks use 1/2 inch UNF thread, making them all interchangeable with each other... occasionally, a smaller machine will use a 3/8 inch UNF thread; they're the only 2 chuck threads I've ever come across.

    the Left-Hand threaded centre lock screw should be stock item at most tool repair shops, but I don't like our chances at a bolt supplier!
    Steve

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