Hand-held machine tool

A machine tool, comprising:

• a tool holder;
• a pneumatic striking mechanism including, on a working axis, an exciter piston, a beater, and a pneumatic chamber disposed between the exciter piston and the beater;
• and
• a motor, wherein the exciter piston is drivable by the motor;
• wherein the exciter piston includes a pot-shaped base body, a seal ring, and a tube-shaped cladding body;
• wherein the pot-shaped base body has a lateral wall enclosing the working axis and a collar which protrudes in a radial direction;
• wherein the tube-shaped cladding body is disposed on the pot-shaped base body surrounding the lateral wall;
• wherein a groove is defined between the collar and the tube-shaped cladding body;
• wherein the seal ring is disposed in the groove;
• wherein the pot-shaped base body and the tube-shaped cladding body are comprised of different materials.

A machine tool, comprising:

• a tool holder;
• a pneumatic striking mechanism including, on a working axis, an exciter piston, a beater, and a pneumatic chamber disposed between the exciter piston and the beater;
• and
• a motor, wherein the exciter piston is drivable by the motor;
• wherein the exciter piston includes a pot-shaped base body, a seal ring, and a tube-shaped cladding body;
• wherein the pot-shaped base body has a lateral wall enclosing the working axis and a collar which protrudes in a radial direction;
• wherein the tube-shaped cladding body is disposed on the pot-shaped base body surrounding the lateral wall;
• wherein a groove is defined between the collar and the tube-shaped cladding body;
• wherein the seal ring is disposed in the groove;
• wherein an inner surface of the tube-shaped cladding body abuts flush on an external surface of the lateral wall.