Impact wrench

An impact wrench is a tool for insertion and removal of screws and nuts by pulse-like ( " hit" ) rotation. Thereby, a much higher torque is generated, which does not need to be held against the tool.

Impact wrenches are available in various designs, distinguished by the type of drive:

• Manually: by a sharp hammer blow to the full metal head.
• Motor:

In manual impact wrench is converted by a hammer over an inclined plane and an internal thread, the hitting force into a rotary motion. The knocking is also the drive, such as a Phillips - use, pressed firmly into the screw and therefore sits correctly. The manual impact wrench is often used to solve larger nuts and bolts that are rusted or have been over-tightened.

The pneumatic design of the impact wrench is standard in automotive workshops where it is used for loosening wheel nuts. The advanced hydraulic impulse wrenches with ao significantly higher torque accuracy and less noise is also used in industrial assembly lines (vehicle ).

• Tool