of the driven side guide 38 for the roll element 28 the inner wall 36 limits the receiving space in which the drive member 22 is arranged when the intermediate shaft 24 is driven by a motor 40 the wobble bearing 30 converts the rotational movement d of the drive member 22 in the oscillating pivotal movement s about the wobble axis t and due to the connection with the driving piston 16 in a linear reciprocating movement l simultaneously the intermediate shaft 24 rotates the gear sleeve 42 about the guide sleeve 14 the toothing 44 transmits the rotation of the gear sleeve 42 to the tool spindle 8 as a result in addition to an impact pulse simultaneously a torque m is applied to the tool spindle 8 and the setting tool 2 become ready for effecting a percussion drilling as particularly shown in fig2 5 there are provided different embodiments of the wobble device 20 in which the stability of respective wobble bearing 30 is increased by a one sided increase of the cross section of the base shape of a respective baring region fig2 shows an embodiment of the wobble device 20 in which an inner diameter idm of the inner wall 36 necessary for mounting.