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Thread: torque settings on impact wrench?

  1. #1
    Join Date
    Jul 2010
    Posts
    60

    torque settings on impact wrench?

    I have one question about torque wrenches. You can see impact wrenches often advertised as say, 360N-M of torque. Have a look at this Hitachi tool.
    http://www.mkmonline.co.uk/product/1...-110-volt.aspx
    But how do you adjust the torque settings?
    e.g if I want to set torque value to 40N-M, but above tool has 360N-M of torque, won't that over torque and damage my machinery?

    Do they come with any sort of digital adjustment on them? do you know any impact tool that has torque settings available? (I already have a manual 'click' type torque wrench having calibrated scale for torque settings)

  2. #2
    Join Date
    Jan 2008
    Location
    In my new home with GARAGE, with Evurr (The Wife)
    Posts
    700

    Re: torque settings on impact wrench?

    An impact wrench as in your link is not adjustable the stated torque is the maximum it will do up or undo a nut/bolt with... there is no fines with one..

    If you want to set things to a specific torque you need a torque wrench that you can set to a specific quantity...
    Evurr's Servicing Engineer

  3. #3
    Join Date
    Nov 2006
    Location
    Johannesburg, South Africa, next to the Kyalami Racing Cicuit.
    Posts
    1,881

    Re: torque settings on impact wrench?

    Quote Originally Posted by asdzrx View Post
    I have one question about torque wrenches. You can see impact wrenches often advertised as say, 360N-M of torque. Have a look at this Hitachi tool.
    http://www.mkmonline.co.uk/product/1...-110-volt.aspx
    But how do you adjust the torque settings?
    e.g if I want to set torque value to 40N-M, but above tool has 360N-M of torque, won't that over torque and damage my machinery?

    Do they come with any sort of digital adjustment on them? do you know any impact tool that has torque settings available? (I already have a manual 'click' type torque wrench having calibrated scale for torque settings)
    To use an impact wrench to UNDO is fine but to tighten is very bad news !

    The vibrations can cause damage that probably only manifest itself later. Always use a regular torque wrench, where possible, for tightening.

    That said then, the rating for this impact tool you are referring to would be just fine for undoing.

    A case in point is NASCAR racing. The tool that is used for undoing the wheel lugs is IMPACT only for undoing. When tightening these lugs the same wrench has no impact but rather a pre set torque for the job. I think that in F1 it is probably the same.

  4. #4
    Join Date
    Jul 2010
    Location
    pontefract, England
    Posts
    2,019

    Re: torque settings on impact wrench?

    impact guns are ace for undoing front sprocket nuts

  5. #5
    Join Date
    Jul 2008
    Location
    the Netherlands
    Posts
    4,439

    Re: torque settings on impact wrench?

    if you have a few thousands to spare I'm sure you can get one that is adjustable, as they use in car factories. For us mortals there are wrenches
    ships get called 'she'
    I bet torpedoes don't

  6. #6
    Join Date
    Jul 2010
    Posts
    60

    Re: torque settings on impact wrench?

    Quote Originally Posted by gunther View Post
    if you have a few thousands to spare I'm sure you can get one that is adjustable, as they use in car factories. For us mortals there are wrenches
    Hi finally found here!!! http://en.foerch.com

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