Matika hammer drill - bit stuck

Remove the chuck and try and release the bit.

drill in bench screw a little bench hammer and place te drill on the left side horizontal of the bench screw on the top of the claws p the machine hangs free place the little bench hammer with the point against the top of the claws of the chuck and with a middle heavy nylon hammer hit the bench hammer slowly that you see that the machine is moving ( use of some wd40 or other oil in the chuck will helping a bit ) it will between 2 and 5 minutes that you have rescued a chuck and "sometimes" also the drill its also depending on the diameter of the accesoires you have used.

Succes

The difference is the working action. SDS drills use a corrugated cams running against each other.

You probably need to turn the selector knob to hammer only, it's probably in drill mode.

If the bits get a bit distorted they will stick, if you have a bench vise clamp the bit in the jaws and give the trigger a quick pull.(reverse) That should dislodge the bit. This happens quite often on lesser quality bits that are made of soft metal.

Grab the bit and see if it will move in or out of the chuck around a half inch. If the bit will not move at all inside the chuck at all. Lock the bit in a vise and strike the chuck with a rubber mallet. This will usually get the bit out.

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Did you try oil or other type of lubrication under the bezel? Hammer drills make a lot of dust.

You may have inadvertently hit the hammer/drill switch and it is floating the middle between functions. This selector switch has a symbol showing a drill bit on one side and a symbol of the hammer on the other. Engage the switch bacK into the drill position

There are cordless varieties of just about any type of hand drill, even the specialized hammer drill. These hammer drills work in the same manner as any of the core hammer drills or regular drills. Powered by a set of rechargeable batteries.