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Impact Wrench?

Discussion in 'Lawn Mowing' started by MOturkey, May 28, 2006.

  1. MOturkey

    MOturkey LawnSite Silver Member
    Posts: 2,757

    I'm wanting to purchase an electric impact wrench for blade changes, and was wondering how much torque I need? Any advice on whether to purchase a rechargeable or corded?

    Just did a little online browsing, and Sears has a Craftsman 18 volt rechargeable, 1/2 drive, but it only has 180 pounds maximum torque, and being ignorant of such things, didn't know if this was adequate, while a corded DeWalt, although less money, has a maximum of 325 lbs of torque. Portability would be nice, but not totally necessary, as I could always do the occasional in-the-field change the old fashioned way.

    Thanks for your input. Neill
  2. MTR

    MTR LawnSite Bronze Member
    from Florida
    Posts: 1,280

    Dewalt all the way....with 15/16 socket. That is all you need.
  3. Daner

    Daner LawnSite Bronze Member
    Posts: 1,308

    Check your manual...That seems like a hell of alot of torque to me
  4. Lumberjack

    Lumberjack LawnSite Member
    Posts: 180

    corded models always have more power output simply because they have an unlimited supply of electicity to draw from....
  5. sicklid

    sicklid LawnSite Member
    Posts: 42

    Check your manual. For example a hustler mini-z asks for 118 ft pounds of torque. Personally I use an impact for taking them off only and a torque wrench to put them on.
  6. LandscapeMasterpieceGA

    LandscapeMasterpieceGA LawnSite Member
    Posts: 109

    NEVER put it back on w/ the impact. Good advice.
  7. deereman

    deereman LawnSite Senior Member
    from USA
    Posts: 518

    Yes you can put them with way to much torque. Our Deere mowers call for 90ft. pounds.
  8. MOturkey

    MOturkey LawnSite Silver Member
    Posts: 2,757

    Thanks for the input, guys. I realized that was more than enough torque installing blades, but didn't know how much was required to loosen a torqued bolt. Also, I appreciate the advice on not installing with the impact. Do any of them have some type of control so you can set the pounds of torque and use them for tightening as well?

    Sorry to sound so ignorant, but I am, about power tools, at least. :)
  9. deereman

    deereman LawnSite Senior Member
    from USA
    Posts: 518

    We do install our blades with our impact............but ever so gently. We have never had a prob yet. Knock on wood!
  10. Cahsking

    Cahsking LawnSite Member
    Posts: 111

    Deereman, what kind of mowers you got?

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