Patent ID: 7266892

Claim:
A portable tool that has a drive unit ( 10 ) including a tube shaped recess ( 13 ) and an abutment surface ( 16 ), and a shaft tube ( 11 ) connected to the drive unit at a first end, and connected to a cutting unit at a second end, ( 10 ), the portable tool comprising: a shaft tube securing means securing the shaft tube to the drive unit, the shaft tube securing means comprising a first sleeve shaped element ( 14 ) enclosing an inner end ( 19 ) of the shaft tube ( 11 ) and a second sleeve shaped element ( 15 ) arranged outside the first sleeve shaped element ( 14 ) in the tube shaped recess ( 13 ) of the drive unit ( 10 ), characterized in that the first sleeve shaped element ( 14 ) is provided with at least one portion ( 14 f ) configured not to abut the abutment surface ( 16 ) of the drive unit ( 10 ) in the tube shaped recess ( 13 ) when the shaft tube is not being influenced by overloads and to abut the abutment surface ( 16 ) of the drive unit ( 10 ) in the tube shaped recess ( 13 ) in order to limit the turning movement of the shaft tube ( 11 ) with respect to the drive unit ( 10 ) when being influenced by overloads, wherein said at least one portion is shaped as a flange extending radially outwards at the inner end of the shaft tube.