Impact wrenches are modern powered tools that are able to apply a high level of torque with minimal physical effort by the user. They are also often known by other names, such as air wrenches, air guns, torque guns, or impactors. Impact wrenches are widely used in both household and industrial applications, and they differ according to the precise mechanism that they use. Most powered torque wrenches use compressed air, a low-cost, highly efficient power source.
All impact wrenches work based on the principle of a rotating mass being accelerated and storing its energy, then suddenly releasing a burst of high torque suddenly on impact. The user of the torque gun feels very little of the torque, since it is applied indirectly through the motor and the rotating mass. Since after the high-powered impact the hammer is allowed to spin freely again, it can store large amounts of energy over time to keep delivering short, high torque impacts. Electric impact wrenches, as opposed to air-powered ones, are generally corded, but there are also many new cordless designs that can be more convenient, but they also have a significantly smaller power source and are generally used for lighter applications than the traditional corded or air-powered torque guns.
Designs and sizes of torque guns are quite variable, and the most common forms of design are inline and pistol grip. In the case of the former, the user holds the impactor much the same way as he would a screwdriver, whereas the pistol grip design is more akin to-as the name suggests-holding a pistol. Besides common impact wrenches for household purposes, there are also special designs created for more specific purposes.By clicking we get more information about the impact wrench.
Impact wrenches are the tool you turn to when no other wrench is working. Sometimes the lug nut is just wound too tightly in place; in other instances the screw head may be so stripped that a regular wrench can’t get a good grip. Regardless of the reason, the impact wrench allows you to bring additional force and grip to a hard-to-turn bolt. Really, properly used, there is no lug nut — no matter how tight — that an impact wrench and a little elbow grease can’t budge.