Slow Motion - How an Impact Wrench Works

Look at  impact guns an impact gun works by  storing energy in a heavy rotating mass  and then releasing it all at once in  small impacts against the output shaft  this puts a lot more force on the bolt  or nut that you're trying to tighten or  loosen and it takes a lot of the string  off your wrist.
This is my personal  impact gun so I won't be taking apart  but I have one of these they went on  sale for two dollars at Canadian Tire  and they're supposed to be able to let  you turn a standard drill into an impact  gun just by putting it in the Chuck.

So,let's take a look at these two how they  work in normal operation and then we'll  take this one apart and look at it in  slow motion  filmed at  frames per second you can  see the hammering action in both tools  for the most part the bits sit still  except when it is periodically hit by  the hammer internally as it engages with  the output shaft taking the impact.

Wrench adapter apart was surprisingly  easy  he was only held together with three  small hook screws that weren't hidden or  covered and they weren't the safety  torques that have the little dot in the  middle here you can see the hammer and  out foot shaft as they fit together and  the spring that pushes the hammer into  the output shaft to give it that  periodic hammering action..

Watch This Video To Know More About How an Impact Wrench Works