Abstract: A portable machine tool switching unit includes a turning knob unit, which has a coupling unit that can be rotatably driven for coupling to at least one switching element, and further includes at least one energy storage element provided for storing switching energy in the case of a preselection. The energy storage element is integrated in the turning knob unit.

Abstract: A material reducing apparatus may be provided. The material reducing apparatus may include a rotor structure for driving rotation of the rotary reducing component. The rotary reducing component includes a first set of reducing component elements and a second set of reducing component elements, each with distinct characteristics. The first set of reducing elements can be carried by the rotor structure within first mounting locations such that the first set of reducing elements is balanced as a set relative to the axis of rotation. The rotary reducing component further includes a second set of reducing elements carried by the rotor structure within second mounting locations such that the second set of reducing elements is balanced as a set relative to the axis of rotation. In certain examples, multiple sets of reducing elements may coexist within the rotary reducing component, each with distinct characteristics.

Abstract: A portable machine tool switching unit includes a turning knob unit, which has a coupling unit that can be rotatably driven for coupling to at least one switching element, and further includes at least one energy storage element provided for storing switching energy in the case of a preselection. The energy storage element is integrated in the turning knob unit.