Originally Posted By: CT8
What is the cfm of the compressor? If your compressor doesn't have enough CFM for the wrench the impact will not work properly.
The CFM of the compressor has nothing to do with it.
An impact wrench requires brief bursts of high flow. That requires fittings and hoses that will flow without dropping the pressure too much. Even a 3 gallon tank with a tiny compressor will work if it has good fittings, although you'll generally need over 125 PSI tank pressure to run an impact at 90 psi.
Generally people get their first impact wrench to be able to remove difficult fasteners. That argues for a 1/2" impact gun with the highest impact torque. Only after they have that capability do they want speed, comfort and convenience, which generally comes with a 3/8" battery powered impact.
What is the cfm of the compressor? If your compressor doesn't have enough CFM for the wrench the impact will not work properly.
The CFM of the compressor has nothing to do with it.
An impact wrench requires brief bursts of high flow. That requires fittings and hoses that will flow without dropping the pressure too much. Even a 3 gallon tank with a tiny compressor will work if it has good fittings, although you'll generally need over 125 PSI tank pressure to run an impact at 90 psi.
Generally people get their first impact wrench to be able to remove difficult fasteners. That argues for a 1/2" impact gun with the highest impact torque. Only after they have that capability do they want speed, comfort and convenience, which generally comes with a 3/8" battery powered impact.