What is the impact key?
The impact key is used to tighten or release a screw or screw by means of a hammer pressure that is converted into a twisted movement inside the tool. It can be controlled manually or can be powered by electricity or compressed air. One driven by air compressor is also known as the pneumatic key .
It works in a way designed by its name: through the principle of impact. The hand -powered bumper key looks like a fat screwdriver; At the end, where the screwdriver normally goes, the operator can capture on bits or drawers. The bit or socket is suitable for a screw or screw, and then the operator hits the other end of the hammer and holds the key down. The internal functioning of the key transforms the impact of down on rotation and the screw is gradually released. This key type works great, albeit a little slowly, for breaking stiff or unsuccessful screws. In a way: when the operator pulls out the trigger, the impact of small hammers inside the key is transformed into a rotary movement. The difference between one of these electricH tools and manually powered key are that the tool performs work for users and very quickly compared to the manual key.
Impact Wrenches are often abused by those who do not know about their special needs. First, it is very important that the user is careful when the matrix or one screw is tightened. Cross threading can occur very easily; The journalist can also play Bolt or walnut unless they know when to stop. In order to prevent these problems, the user must always assure that each nut or bolt manually heals manually; If the nut or the key screw is trying to start, it will not be possible to feel if the threads are crossed. If the key is not controlled - it means that it stops when the nut or bolt is tightened for a certain torque - the operator will have to go slowly and regularly check the torque of the nut or screw, andwould make sure he didn't get it too much.
The bumper key also requires several special accessories. The air -powered model runs away from the air compressor with the tank; The air compressor should have at least 10 gallons (45.4 liters) and be able to generate at least 3 HP. This key type also requires special drawers that are designed to withstand high torque applied by the tool.
Although the use of the bumper key requires a certain degree of expertise, it certainly makes it easier to reduce the amount of work and time. This tool can even make it easier to replace the tire: some manufacturers make portable keys that connect to the car cigarette lighter and come up with different drawers to fit any size of the matrix.