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  1. #1
    GTX Level Member suitercrew's Avatar
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    Default Confused on impact wrench vs impact driver differences

    Hey guys Im just curious as far as removing stubborn bolts or lugs hypothetically let's say you had a 100ft lb impact wrench and a 100ft lb impact driver with the socket adapter on it. Is there any difference? Does the impact wrench provide harder impacts or could they remove all the same stubborn bolts since they're rated at exactly the same torque? Thanks guys

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  2. #2
    I can't car too good. SaukRapids's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    I was looking at M18 power tools. There were two main things I read asking the same question.

    1) Power source. A battery driven tool, even a brushless one, wears down the battery during the first use. Corded tools lose efficiency to heat. Big compressors have a more linear power delivery.

    2) Work space. Milwaukee M12 is very small for tighter spaces. Lugs and struts have room, so why not use the tool for the job an go pneumatic?

    Torque numbers are similar, so you're on track there. I noticed that more electric tools were rated in Inch Pounds, however.

  3. #3
    GrandPrix Junkie SgtMarshal's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    An inch pound could be the same as a foot pound depending on the conversion, just saying.

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    Default Re: Confused on impact wrench vs impact driver differences

    Same thing basically, impact wrenches are typically air powered and stronger, impact drivers are typically electric and weaker.

    If you are thinking 100 ft lbs is going to break a "stubborn" bolt you are sorely mistaken as you can generate that much torque by hand with the proper sized wrench.
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  5. #5
    GTP Level Member cheatah faheatah's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    Some rechargeable "impact drivers" like the ones in a multi-tool kit, only have that 1/4" shank. More meant for driving screws into wood without stripping the heads, rather than busting off lug nuts....
    not what it looks like

  6. #6
    GrandPrix Junkie Bronco Boy's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    They are Two different tools.....

    Impact Driver: 1/4" drive, screws, lag bolts etc, lighter ft/lbs.
    Impact Wrench: 1/2" drive, larger nuts n bolts etc, higher ft/lbs.

    You need one of each.



    Chris B
    2002 GT

  7. #7
    GTX Level Member suitercrew's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    Quote Originally Posted by Bronco Boy View Post
    They are Two different tools.....

    Impact Driver: 1/4" drive, screws, lag bolts etc, lighter ft/lbs.
    Impact Wrench: 1/2" drive, larger nuts n bolts etc, higher ft/lbs.

    You need one of each.



    Ya I like the newer craftsman one with the tri led. I actually have the 18v ryobi 1/2" impact that's 300ft lb and I love it and it works great. I was just looking for something like the milwaukee 3/8 fuel impact just because it's so tiny and can fit in a lot more spots. I have there m12 impact driver though which is only 17ft lbs less of torque which is where my question stems from because I'm not going to spend the 150$ if the only difference is 17ft lbs.

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  8. #8
    SE Level Member Monday's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    Quote Originally Posted by SgtMarshal View Post
    An inch pound could be the same as a foot pound depending on the conversion, just saying.
    there's 12 inches in a foot in case you were wondering

  9. #9
    SE Level Member Monday's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    To get more into it.. if you are looking at lugs and crank bolts, you want about 500-600 ft lbs in reverse.

  10. #10
    GTX Level Member suitercrew's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    Quote Originally Posted by Monday View Post
    To get more into it.. if you are looking at lugs and crank bolts, you want about 500-600 ft lbs in reverse.
    What lugs are you taking off!? Lol I live in az so I don't normally have to worry about too many super seized bolts. Also the last time I had to remove my crank bolt it took a torch and an 1100ft lb impact. My dad's 600ft lb impact had no way in hope of getting that piece of sh*t off.

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  11. #11
    GrandPrix Junkie idrivejunk's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    I thought the confusion was ratchet vs impact when I read the title. Still lost. I use air. Carry on...

  12. #12
    GTX Level Member suitercrew's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    Quote Originally Posted by idrivejunk View Post
    I thought the confusion was ratchet vs impact when I read the title. Still lost. I use air. Carry on...
    The most noticeable difference is the impact driver has a 1/4" hex anvil as opposed to a standard impact wrench that has a 1\2", 1/4", or 3/8" square anvil.

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  13. #13
    GXP Level Member GTPpower's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    There is also "impacts per minute," that can affect how well it does the job, if the torque rating is the same or similar.

    I don't have the 1/2 impact wrench...it's on my list though.
    I do have the m18 and m12 1/4 impact drivers. With the adapter, they can really remove some big bolts. But, it is hard on them. The chucks get the piss beat out of them, as well as the adapter.

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  14. #14
    GrandPrix Junkie idrivejunk's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    Quote Originally Posted by suitercrew View Post
    The most noticeable difference is the impact driver has a 1/4" hex anvil as opposed to a standard impact wrench that has a 1\2", 1/4", or 3/8" square anvil.

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    Ah. As in nut driver.

  15. #15
    GrandPrix Junkie Bronco Boy's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    Quote Originally Posted by suitercrew View Post
    I have there m12 impact driver though which is only 17ft lbs less of torque which is where my question stems from because I'm not going to spend the 150$ if the only difference is 17ft lbs.
    That sounds more like just a "driver" than an "impact driver". My impact wrench is 250 ft/lbs and the impact driver is 125 ft/lbs.

    This thing is probably around 15 ft/lbs at best. LOL

    Chris B
    2002 GT

  16. #16
    GTX Level Member suitercrew's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    The impact driver I have currently is 100 ft lbs but the m12 impact wrench I wanted to get is 117ft lbs

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  17. #17
    SE Level Member Monday's Avatar
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    Default Re: Confused on impact wrench vs impact driver differences

    I wasn't talking about crusty.. but when you want to take off wheels etc, there can be expansion when something is hot from driving. And yes your car is 100ft lbs for torque... one day you might want to help a buddy with a truck or something. I came across one crank bolt that sounds like the brother to the one you fought. That was one out of probably around 100 or so.

    My cheapy 1/2 impact (air) will do 600R and 500F. As you use stronger guns you need to work the throttle and not simply squeeze the trigger and go for broke.

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