A pneumatic impact wrench or air gun is a very beneficial tool for removing stubborn nuts and bolts. It uses a strong jerking motion to help free fasteners that were over tightened or that have rusted over time. Compared to a customary wrench, this can be a real improvement, and can make difficult jobs far easier. There is a wide range of different types of impact wrench out there, pneumatic being just one of them. In this article, we will consider the alternatives and their relative merits as well as account for the function of the impactor generally.
How an Air Gun Works
Ingersoll Rand Air Compressor Review
An air gun differs from other powered wrenches in that it delivers its torque in instantaneous jolts rather than with a steady force. Essentially, the internal motor spins a rotating mass, which then hits the output shaft. This repetitive impact results in the rattling noise and also in the effectiveness of the wrench. The many minor impacts work to sell out the torque felt by the user while greatly increasing the instantaneous torque applied to the nut or bolt. Multiple short, sharp applications of torque can take off even the most stubborn fastener, even one that has rusted severely. Models typically differ in both their torque and their weight, each of which make a big inequity to the tool's usability.
Different Varieties
A pneumatic impact wrench has some competitors in the form of different drive mechanisms. Hydraulic impact wrenches are used in some commercial applications where pressured hydraulics are available, but galvanic impact wrenches are more favorite among home users. It is even inherent to get cordless galvanic variants, although these are typically down on power compared to their more heavy-duty brethren. The type chosen will depend on the context and circumstances; a hobbyist who needs a transportable powered wrench will likely prefer a cordless galvanic version, while more serious professional use will likely require the more great pneumatic option.
Conclusion
A pneumatic impact wrench is a great selection for removing difficult nuts or bolts. There are some alternatives, such as the cordless galvanic variant, which may work better for some people, but for sheer power and performance, it is hard to beat compressed air. Look to the torque and weight of the air gun to decide its suitability. There is no sense in buying a wrench with whether much less or vastly greater torque than you require, and a heavy model will cause you some hurt when used for long periods.
How A Pneumatic Impact Wrench Works