Impact mechanism with multi-material striker

A rotary hammer adapted to impart axial impacts to a tool bit, the rotary hammer comprising:

• a housing;
• a motor supported by the housing;
• a spindle coupled to the motor for receiving torque from the motor, causing the spindle to rotate;
• a reciprocation mechanism operable to create a variable pressure air spring within the spindle, the reciprocation mechanism including
• a piston configured to reciprocate within the spindle in response to receiving torque from the motor,
• a striker that is selectively reciprocable within the spindle in response to reciprocation of the piston, and
• an anvil that is impacted by the striker when the striker reciprocates towards the tool bit, the anvil imparting axial impacts to the tool bit;
• and
• a bit retention assembly for securing the tool bit to the spindle,
• wherein the striker includes a body portion formed of a first material and an insert portion within the body portion, the insert portion being formed of a second material that is more dense than the first material.

A rotary hammer adapted to impart axial impacts to a tool bit, the rotary hammer comprising:

• a housing;
• a motor supported by the housing;
• a spindle coupled to the motor for receiving torque from the motor, causing the spindle to rotate;
• a reciprocation mechanism operable to create a variable pressure air spring within the spindle, the reciprocation mechanism including
• a piston configured to reciprocate within the spindle in response to receiving torque from the motor,
• a striker that is selectively reciprocable within the spindle in response to reciprocation of the piston, the striker including a nose at one end thereof, and
• an anvil that is impacted by the nose of the striker when the striker reciprocates towards the tool bit, the anvil imparting axial impacts to the tool bit;
• and
• a bit retention assembly for securing the tool bit to the spindle,
• wherein the striker includes
• a body portion, which includes the nose, formed of a first material, and
• an insert portion within an end of the body portion opposite the nose, the insert portion being formed of a second material that is more dense than the first material.