A tool holder system with first and second spindles, a locking ring slideably mounted on the first spindle, a first biasing mechanism biasing the locking ring towards an indentation position where the locking ring surrounds an indentation on the first spindle, and a moveable locking element mounted on the second spindle, the locking element being engageable to the indentation. The first spindle can be unlocked from the second spindle by sliding the locking ring away from the indentation position against the biasing force of the biasing mechanism and towards the second spindle. Such action moves the locking element to disengage from the indentation.

A method of retaining a hammer tool in the front head of a powercell assembly of a hammer assembly includes biasing a hammer tool retaining pin such that a portion of the tool retaining pin extends into a tool receiving bore of the front head of the powercell assembly, holding a hammer tool in the tool receiving bore of the front head of the powercell assembly via the tool retaining pin, and releasing the hammer tool remotely from the hammer assembly.

A method of retaining a hammer tool in the front head of a powercell assembly of a hammer assembly includes biasing a hammer tool retaining pin such that a portion of the tool retaining pin extends into a tool receiving bore of the front head of the powercell assembly, holding a hammer tool in the tool receiving bore of the front head of the powercell assembly via the tool retaining pin, and releasing the hammer tool remotely from the hammer assembly.

A tool holder system with first and second spindles, a locking ring slideably mounted on the first spindle, a first biasing mechanism biasing the locking ring towards an indentation position where the locking ring surrounds an indentation on the first spindle, and a moveable locking element mounted on the second spindle, the locking element being engageable to the indentation. The first spindle can be unlocked from the second spindle by sliding the locking ring away from the indentation position against the biasing force of the biasing mechanism and towards the second spindle. Such action moves the locking element to disengage from the indentation.

A chuck for a chiseling power tool has a holding sleeve that is arranged concentrically with respect to a working axis and that serves to receive one shank end of a tool having a locking groove. A locking element protrudes partially into the holding sleeve so as to engage with the locking groove. A sliding block guides the locking element, whereby the sliding block has a section that is wound helically around the working axis.