Answer :
The diameter of the holes you need to drill must be determined before utilizing a rotary hammer or hammer drill to drill into concrete.
What do you know about hammer drill ?
With their percussion or cam-action hammering mechanism, hammer drills hammer while the drill bit is spinning using mechanical interaction between two sets of toothed gears. In drills with cam-action, the chuck incorporates a mechanism that allows the bit and the entire chuck to move forward and backward along the axis of rotation.
This kind of drill is frequently used with or without the hammer action, however using the hammer action alone is not an option because the hammer motion is caused by the rotation over the cams.
By punching the drill bit in and out (along the axis of the bit), a hammer drill is able to punch the drill bit in addition to spinning it. The bit's actual travel distance.
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Determine the diameter of the holes you need to drill
