Power tool

A power tool comprising:

• a drive motor mounted in a housing to drive a drive shaft;
• a gearbox housing to accommodate a gearbox unit or an angular gearbox to convert rotation of the drive shaft into a rotation of an output shaft about a rotation axis of a transmission, wherein a lubricant for gearbox lubrication is adapted to be absorbed in a gearbox housing interior of the gearbox housing, the output shaft having a first end at which an insert tool unit is adapted to be mounted and having a second end, the output shaft being a hollow spindle with a cavity, which has a hollow cylinder section at the second end;
• an actuator arranged rotationally resistant to the gearbox housing, the actuator engaging in the hollow cylinder section;
• a gap formed coaxially between an inner wall of the hollow cylinder section and an outer wall of the actuator, the gap extending along the axis of rotation defining a continuous fluid-communication path between the cavity and the gearbox housing interior, the gap being connected at a first end to the cavity and at a second end to the gearbox housing interior thereby the lubricant from the gearbox housing interior is conveyed through the gap to lubricate the actuator and returned toward the gearbox housing during rotation;
• and
• a shaft seal arranged in the gap to prevent lubricant from escaping from the gap towards the first end of the output shaft.