Abstract: A control method for a hand-held power tool includes measuring a temperature of an electric motor, opening a switchable clutch if the temperature exceeds a first threshold value, and energizing the electric motor when the clutch is open until the temperature falls below a second threshold value. In an embodiment, the electric motor is switched to a current-free mode, i.e., switched off, if the temperature falls below the second threshold value. The second threshold value is preferably less than the first threshold value.

Abstract: A control method for a hand-held power tool includes measuring a temperature of an electric motor, opening a switchable clutch if the temperature exceeds a first threshold value, and energizing the electric motor when the clutch is open until the temperature falls below a second threshold value. In an embodiment, the electric motor is switched to a current-free mode, i.e., switched off, if the temperature falls below the second threshold value. The second threshold value is preferably less than the first threshold value.

Abstract: The invention relates to a hand-held chiselling machine tool comprising a motor and a pneumatic percussive mechanism that is driven by the motor. The user can select between at least two idling rotational speeds by means of a selector switch. In the chiselling mode, a motor control unit regulates a rotational speed of the motor to a nominal rotational speed. This nominal rotational speed cannot be set by the user, but is predetermined with regard to an optimal efficiency for said percussive mechanism. The motor control unit sets the rotational speed of the motor to the selected idling rotational speed when the percussive mechanism is idling. At least one of the selectable idling rotational speeds is greater than the nominal rotational speed.

Abstract: A hand-held power tool includes a percussion mechanism (2) having a percussion piston (5) for impacting at least one anvil (8, 8?a, 8?b) displaceable in a guide tube (6) between two, spaced from each other axial stops (7a, 7b) provided in the guide tube (6), and an impact sleeve (10, 10?) arranged coaxially with the at least one anvil (8, 8?a, 8?b), axially displaceable within limits between two outer radial bands (9a, 9b, 9?) formed on the at least one anvil (8, 8?a, 8?b), and having an outer diameter (A) smaller than an inner diameter (I) of the guide tube (6).

Abstract: A hand-held power tool includes a shaft (12) located in the housing part (11) of the power tool (10), a bearing (13) for rotatably supporting the shaft (12) in the housing part (11), and a snap-receptacle (14) formed in the housing part (11) for receiving the bearing (13).