1. Missed the live Ask the Expert event?
    Catch up on the conversation with Ken Hutcheson, President of U.S. Lawns in the Franchising forum plus sign up to receive a FREE eBook on how to grow your landscape business.

    Dismiss Notice

Will this impact wrench be powerful enough?

Discussion in 'Lawn Mowing' started by TROTTMAN, Jun 22, 2005.


    TROTTMAN LawnSite Senior Member
    Messages: 397

    Here are the specifications (its a cheap electric version, but I ONLY need it for removing and installing blades):

    Wrench length: 11 5/8"
    Powerful 7 amp, 120V motor
    2100 RPM, 2400 BPM
    235 pounds of torque

    The socket size is 1/2" (pretty standard from what I have seen).

    Those are about the same numbers for torque I see on a lot of air impact wrenches of similiar value. I know it won't be as good, but I'm on a budget! Thanks y'all for any advice!

    And again, I know electric isn't as good, but should this get the blades off and on?
  2. Ric

    Ric LawnSite Fanatic
    Messages: 11,969


    I don't think it has enough power to make you happy. I have both a cheap and good impact. The 235 lb air impact wouldn't do the job for me so I got a 600 lb impact and it does ok.

    TROTTMAN LawnSite Senior Member
    Messages: 397

    So you don't think it will get the blade bolts off? If it can just get them loose thats good enough for me. I can't imagine the bolts require more torque than that, but maybe they do???

    Ususally stuff isn't tightened down much over 100lbft. Right?
  4. Ric

    Ric LawnSite Fanatic
    Messages: 11,969


    Blade rotate in the direction that tights the nuts. The 235 ft lbs Might be enough to break them loose some of the time. But carry a big Breaker bar with you. You will need it on occasion. I found my 235 ft lb air impact to be worthless most of the time.

    TROTTMAN LawnSite Senior Member
    Messages: 397

    Hmmm okay... where can I find one of these breaker bars and how much do they usually run?
  6. Big Hoss

    Big Hoss LawnSite Member
    Messages: 57

    This impact has more than double the torque to take off and put the blades on my equipment . It should be enough to get you started but I would be concerned about its durability.

    Big Hoss
  7. timinkc

    timinkc LawnSite Member
    Messages: 217

    dude, if you don't know what a breaker bar is you're in serious trouble...
  8. SteveInMD

    SteveInMD LawnSite Member
    Messages: 23

    Craftsman makes them. Take the time to find a 3 - 4 foot length of steel pipe that fits tightly around the handle too. I also use an impact wrench socket because they are much tougher than the standard ones.
  9. Precision

    Precision LawnSite Silver Member
    Messages: 2,995


    that impact wrench will be plenty to put them on. But getting them off, I would guess at least one time in 4 it will do absolutely nothing towards lossening the bolt.

    I have one (pnuematic) that is rated at 1000 ft/# and I had trouble with a bolt the other day. Took 10 seconds to break it loose.

    Get a good cfm air compressor that runs on 110 volt. Lowes has a 30 gallon 6 hp for under $300. Then get a decent air driven impact wrench at $150. Very good investment and you now have a whole list of new tools to ask for at birthdays and Christmas. #1 should be a portable air tank for fixing tires while working.
  10. South Florida Lawns

    South Florida Lawns LawnSite Platinum Member
    from usa
    Messages: 4,784

    I have an old craftsman electric and it has plenty of power. It even took off the factory tight bolts off the blades with out a problem. Now i just use a breaker bar and some muscle and skip the impact wrench all together. I am looking at the battery powered models for when I'm out on site.

Share This Page