Rotary hammer including breather port

A power tool comprising:

• a body housing a motor, including a wall defining an interior portion, and at least partially defining a labyrinth path, the labyrinth path having an outlet communicating with atmosphere and an inlet communicating with the interior portion along an axis, grease being housed in the interior portion;
• and
• a drive mechanism driven by the motor and including a slinger surface supported in the interior chamber for movement relative to the wall to prevent the grease from entering the inlet of the labyrinth path, at least a portion of the slinger surface extending beyond the inlet of the labyrinth path in a direction measured along the axis.

A power tool comprising:

• a body housing a motor, including a wall defining an interior portion, and at least partially defining a labyrinth path, the labyrinth path having an outlet communicating with atmosphere and an inlet communicating with the interior portion and defining an axis, grease being housed in the interior portion;
• and
• a drive mechanism driven by the motor and including a slinger surface rotatable about the axis relative to the housing along an eccentric path to prevent the grease from entering the inlet of the labyrinth path.

A power tool comprising:

• a body housing a motor, including a wall defining an interior portion housing grease, and including an opening extending through the wall and communicating between the interior portion and atmosphere;
• and
• a drive mechanism driven by the motor and supported in the body, the drive mechanism including a shaft extending through the interior portion, the shaft defining an axis and supporting a slinger surface for rotating movement about the axis relative to the wall to prevent the grease from entering the opening in the wall, the axis being substantially aligned with the opening.

A power tool comprising:

• a body housing a motor, including a wall defining an interior portion housing grease, and including an opening extending through the wall and communicating between the interior portion and atmosphere;
• and
• a drive mechanism driven by the motor and supported in the body, the drive mechanism including a shaft extending through the interior portion, the shaft defining an axis and supporting a slinger surface for rotating movement about the axis relative to the wall to prevent the grease from exiting the interior portion through the wall, at least a portion of the slinger surface extending toward the opening in the wall in a direction measured along the axis.