[Shop-talk] Air Impact Wrenches - how much torque?

[Ian McFetridge]

Second the IR gun, mine is about 10 years old and only with some periodic
oil continues to be an excellent gun.  I like the dial with four levels of
power, which I believe is a needle valve that adjusts the pressure to the
gun.  On sensitive parts I’ll put it on the low setting and then dial it up
as needed to break loose fasteners (to your point about breaking things).
It’s a lot easier than lowering the line pressure, although that would work
too.

BEst,
Ian

On Sun, Oct 7, 2018 at 5:16 PM rustymetal <rustymetal at sbcglobal.net> wrote:

> I swear by Air Cat. I bought a 1/2" drive 500 lbs reverse torque recently.
> Little to no vibration or kick back.
>
>
>
> Sent from my Samsung Galaxy , an AT&T LTE smartphone
>
> -------- Original message --------
> From: Brian Kemp <bk13 at earthlink.net>
> Date: 10/7/18 12:29 PM (GMT-08:00)
> To: Shop Talk <shop-talk at Autox.Team.Net>
> Subject: [Shop-talk] Air Impact Wrenches - how much torque?
>
> I'm shopping for a new air impact wrench and wondered how much torque I
> might need.  I'm replacing a Harbor Freight one that claims 250 ft-lbs,
> but can't break hand torqued wheel lugs.  If I need to undo a TR6 crank
> bolt again, I'll borrow a bigger impact wrench or just use a breaker bar
> like last time.
>
> The primary use will be wheel lugs.  Occasional use will be brake jobs
> and related car work.
>
> Per the sticker on the compressor specs are 5.5 SCFM at 90psi, 5HP, 26
> gal, 135psi max.  This is Husky Pro about 15 years old, so I recognize
> the HP rating is likely optimistic.  The motor requirement is 15A @
> 120V, which would indicate a more realistic HP rating in the 2HP range.
>
> I'm not after continuous duty.  At most, it would be 5 wheel lugs then a
> break.
>
> I'm thinking the 1000 ft-lb models are overkill and could potentially do
> damage snapping an old TR6 or GT6 bolt.  I'd rather have the tool not
> take off the nut/bolt than snap it.
>
> The new Husky ones at Home Depot look nice, but I don't see any feedback
> on the 800 ft-lb model and only one on the 650 ft-lb model.  If I do go
> bigger, Lowes has a nice 1000 ft-lb model with a 95% recommended rating.
>
> Any feedback is appreciated.  Since this isn't really necessary, I'm
> looking at about the $100 range.
>
> Thanks,
>
> Brian
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