I would go with the biggest one I could get. I have a Chicago Pneumatic
CP-746 with 450 lbs max and have run into problems getting lug nuts off as
well as a dog nut. I borrowed a 3/4" IR and had no problems. I use a
Craftsman oil less 5hp compressor so even a cheepie compressor will handle
the 3/4" one. One other thing about the CP its a bear to get the sockets
on. I ended up oiling the square end which helps somewhat.
=2E..Art
On Wed, 18 Nov 1998, Mike Lee - Team Banana Racing wrote:
>=20
> Hi all,
>=20
> I'm shopping for a new impact wrench, as my old one is nearly useless. I=
t's an
> old Rockwell Int'l. I don't know the spec's on it, but when it can't rem=
ove
> lugnuts, it's time is up (are these things rebuildable?).
>=20
> Anyway, I was leaning towards the IR2131, which is a 1/2" wrench, and 600=
ft. lbs.
> The price is pretty good, at $162, and I think the last time it was discu=
ssed,
> this wrench got a pretty good review from you guys.
>=20
> However, I recently spied an IR tool bundle for sale: an IR 252 3/8" rach=
et and
> IR 108 3/4" impact wrench for only $180. Now, I don't have any 3/4" sock=
ets,
> but I figure I can always simply leave on a 3/4-1/2 adaptor (is that safe=
?),
> and this impact boasts a much higher torque rating (750 ft lb...)
>=20
> Which one of these would be the better choice? I figure more/bigger is b=
etter,
> but maybe I'm missing something. The spec's, as far as I can gather, are=
listed
> below.
>=20
> Thanks,
> Mike
>=20
> 3/4" AIR IMPACT WRENCH
> Manufacturer: Ingersoll-Rand=20
> Drive: 3/4"
> Torque range:100 to 500 ft. lbs.=20
> Blows per minute: 1200
> No load speed: 6500 RPM=20
> Bolt capacity: 1''=20
> Average air consumption: 7.5 CFM=20
> Air inlet: 3/8"
> Minimum hose size: 1/2"
> Tool weight8-3/4 lbs.=20
>=20
> Full power in reverse; 3 position adjustable power forward
> 750 ft. lbs. maximum torque
> Handle exhaust
> Lightweight and easy to operate
> Oil bath lubrication for long life
>=20
> 3/8" AIR RATCHET WRENCH
> Manufacturer: Ingersoll-Rand
> Drive: 3/8"
> Maximum torque: 50 ft. lbs.=20
> Torque range: 10 to 45 ft. lbs.
> No load speed: 150 RPM
> Standard bolt capacity: 3/8"
> Average air consumption: 4 CFM=20
> Air inlet: 1/4"
> Minimum hose size: 5/16"
> Tool weight: 2-1/2 lbs.=20
>=20
> Ball and needle bearing construction for long service life
> Up to 50 ft. lbs. of torque
> Rear exhaust directs air away from your work
> Variable speed throttle
>=20
> 1/2" AIR IMPACT WRENCH
> Manufacturer: Ingersoll-Rand 2131=20
> Drive: 1/2"
> Maximum torque: 450 ft. lbs. forward, 600 ft. lbs. reverse=20
> Torque range: 50-400 ft. lbs.=20
> Impacts: 1250 BPM=20
> No load speed: 9500=20
> Air inlet: 1/4" NPT=20
> Overall length: 6-7/8"=20
> Tool weight: 4-1/2 lbs.
> Shipping weight: 5 lbs.
> This innovative design muscles out 600 ft. lbs. of reversing torque i=
n a
> wrench only 4-1/2 lbs. Long life high power twin hammer design. Stron=
g
> and light composite housing.=20
>=20
>=20
> And to wet your whistle.......
> 1/2" SUPER DUTY HIGH POWERED AIR RATCHET WRENCH
> Manufacturer: Ingersoll-Rand
> Model Number: 1099
> Drive: 1/2''
> Maximum torque: 60 ft. lbs.
> Torque range: 10 to 60 ft. lbs.
> No load speed: 250 RPM
> Standard bolt capacity: 3/8"
> Average air consumption: 4 CFM
> Air inlet: 1/4" NPT
> Recommended hose size: 5/16"
> Tool weight: 3 lbs.
> Handles large bolts and fasteners. 360=B0 rotational exhaust. Push bu=
tton throttle.=20
>=20
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