The different Parts That Make Up an Air Impact Wrench

The Different Parts That Make Up an Air Impact Wrench

An air impact wrench is a kind of socket wrench tool that has been specifically designed for delivering high output of torque with very minimal exertion on the part of the user. It can be achieved through storing energy in rotating mass before applying an intense and sudden twisting motion to output shaft that is usually in very short bursts. The main source of power is being provided by the compressed air.

When disassembled, you will be able to see the different parts that make up an air impact wrench.

  • External case–  the external case of the wrench is used to hold together the various internal components of the impact wrench. To ensure it can deal with the strong forces exerted on the tool during operation it must be constructed from durable materials.
  • Rotatory cylinder– This is the part of the the tool that the compressed air enters via an intake port and the exits through an exhaust port. The two ports are found an the bottom of the cylinder. The cylinder contains both the rotatory wheel and blades. As compressed air enters and exits it spins the blades and wheel.
  • Rotational wheel– this component primary function is to convert compressed air into rotational energy. The wheel will have a number of six slots that are used to hold the rotatory blades. The wheel is connected to the impact system by means of a sprocket end that enables the provides the required rotational energy from the rotational wheel to impact system.
  • Rotor blades– the blades are connected to the rotatory wheel by the various slots on the wheel. As compressed air passes between rotor blades, they easily convert the compressed air into kinetic energy.
  • Front and Rear rotatory end plates– these two plates are used to ensure the rotatory wheel and rotary blades are held in place during operation.  They ensure that the rotating cylinder is air tight.
  • Hammer case –  this is the second case in the tool and it is used to hold together the various parts of the impact system of the tool that will include the hammer cage, hammer dog, hammer pin and anvil.
  • Hammer cage– This is part of the impact system and it contains the hammer dog, hammer cam, pin and anvil.
  • Hammer Cam – converts rotational energy from compressed air into an impulse force. The cam is connected to the hammer cage with the hammer pin and it rests on the anvil.
  • Hammer dog– The hammer dog is designed to ensure that the anvil and cam to lock and release 1 impulse per revolution of the tool. This part is found inside the hammer cage and is held in its place by the anvil.
  • Hammer pin– this is probably one of the most important parts in the tool since it ensures that the hammer is held in place within the external cage.
  • Anvil– The anvil is the part of the wrench where the various sized sockets and torque extensions will be connected to.
  • Directional valve– is used to control the direction of the compressed air flow into the rotator cylinder. The valves purpose allows a user to change direction that the wheel spins. So either clockwise or counter clockwise.
  • Regulator switch– this part of the tool allows a user to turn the position of the directional valve to tighten/loosen.
  • Throttle valve– is used to control the compressed air flow into the regulator system.

To sum it up, the important parts of an air impact wrench include the housing, the hammer cage, the pin, the anvil, the hammer, rotor, rotor cylinder, rotor blade, reverse/forward control valve/button, rear plate and rear cover. All of these parts are playing a crucial role in order for the air impact wrench to work at its best.

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