Power tool

A power tool, comprising:

• a housing;
• a power mechanism comprising a rotatable drive shaft;
• an oscillating mechanism for generating oscillations;
• an output mechanism drivingly connected to the oscillating mechanism;
• an airflow element connected to the drive shaft and driven by the drive shaft to rotate to generate an airflow;
• a heat conducting portion supported on the drive shaft, wherein the airflow element is disposed on an outer circumference of the heat conducting portion;
• an air inlet disposed on the housing and allowing the airflow to enter;
• and
• an air outlet disposed on the housing and downstream of the air inlet and allowing the airflow to flow out;
• wherein the oscillating mechanism comprises:
• a support assembly sleeved on the drive shaft;
• and
• an oscillating member driven by the support assembly to oscillate;
• and
• wherein heat generated by the oscillating mechanism is conducted to the heat conducting portion through the drive shaft, the heat conducting portion has a thermal conductivity greater than or equal to 50 W/m·° C., a portion of the heat conducting portion in contact with the drive shaft has an axial distance L1, a thermally conductive portion of the drive shaft between the heat conducting portion and the support assembly has a distance L2, and a ratio of the axial distance L1 to the distance L2 is greater than or equal to 0.1 and less than or equal to 5,
• further comprising an oil storage unit used for storing a lubricating medium and disposed on at least one of the drive shaft or the support assembly, wherein the support assembly comprises a support bracket and rolling members, and oil grooves penetrating through a circumferential surface of the support bracket are provided on the support bracket.