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Keyless Chuck Loosening Problem.

I use a Hitachi DV 18DGL battery drill for a lot of my work. It is very good and the battery lasts a long time and charges up quickly when needed.


BUT, when in use the keyless chuck comes loose and the drill bit does not turn due to a poor hold. I have two of these drills and the same problem exists with both chucks. Is it a design problem or a bad batch of chucks? I do not know. Other makes of keyless chucks that I have used over the years hold the drill bits securely and do not come loose even if using a hammer action.


Is there a solution? Perhaps I should pour some fine sand into the chucks.


Z.
Parents

  • Zoomup:




    hifly:

    I had this problem as i was using the motor to tighten it by holding the chuck and spinning the motor, when I started tightening while it was not running it's fine and never comes undone.


    Vince




    Now there's a thing. I will try that hifly. Thanks hifly and all.


    Z.



    If that's what you were doing, Zoomy, that seems to be your answer. I am sure that we all run the drill to close the chuck most of the way (or open it), but I have always finished the job by hand (stop sniggering at the back!) so that explanation did not occur to me.


    Do let us know how you get on.

Reply

  • Zoomup:




    hifly:

    I had this problem as i was using the motor to tighten it by holding the chuck and spinning the motor, when I started tightening while it was not running it's fine and never comes undone.


    Vince




    Now there's a thing. I will try that hifly. Thanks hifly and all.


    Z.



    If that's what you were doing, Zoomy, that seems to be your answer. I am sure that we all run the drill to close the chuck most of the way (or open it), but I have always finished the job by hand (stop sniggering at the back!) so that explanation did not occur to me.


    Do let us know how you get on.

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