The present invention relates to a hammering device, the hammering device is provided with one of the rotary motor (14), one gas spring specifically with an electric motor, a resiliently compressible gas volume (11), with one piston shaft (8), and to the gas spring (11) can be tensioned by a motor (14) via one of the tensioning mechanism (15, 16), imparting the tension is released from the state can accelerate the piston shaft (8) in the driving direction, the gas spring (11) is provided with one piston crown mounted airtight (10), the piston crown is connected as a component to which the piston shaft (8) is separated in the driving direction in the piston crown the piston shaft (8) via a thrust bearing (9) pivotable over a plurality of planes (10) and the coupling of To have.
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