I have an eight gallon air compressor... 4.3cfm @[EMAIL PROTECTED]
40psi and 3.5cfm @[EMAIL PROTECTED]
90psi.
I've been looking at buying an inexpensive impact wrenche and notice
the different ratings on them, but many times they aren't rated the
same so comparison can be different.
For example...
For $29 I can get a no-name electric 1/2" impact wrench that plugs into
my cigarette lighter. It provides 250 ft/lb of torque. That's all I
have for specifications.
For $35 I can get a JobMate air powered impact wrench with the same 250
ft/lb of torque.
For $150 I can get a 120v impact wrench, but it only provides 228 ft/lb
of torque. Less than the cigarette lighter model? It runs up to 2100
rpm.
For $270 I can get a battery powered electric impact wrench that
provides 1050 ft/lb of torque! That's a lot more than the other
wrenches, but from a 14v battery? It's not a big unit either. It
specifies 0-2300 rmp.
What I'm hoping to use this for, besides lug nuts, is for the few odd
bolts on my car that I can't get loose and don't have room to get a
breaker bar for extra torque.
What should I really be looking at when checking out the impact
wrenches?
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