| 摘要 |
A powered hand tool comprising a pneumatic motor including a cylinder, a main body formed as a hollow tube member, a main body rear end being formed with a fluid inlet and a fluid outlet, the main body being axially disposed for engagement with the pneumatic motor, a main body front end with an interior surface fitted for engagement with a lock nut, the pneumatic motor having a rotary shaft axially extending out of the main body front end wherein the diameter of the pneumatic motor is smaller than the diameter of the hollow tube member, an internal isolation layer composed of a vibration isolation material placed in the hollow tube member so that the vibration isolation material is engaged with and adjacent the ends of the hollow tube member and the pneumatic motor.
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