Importance

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Abstract

An impact tool includes: a motor; a sun gear rotated by the motor; and at least three planet gears, which mesh with the sun gear; an internal gear, which meshes with the planet gears. A spindle includes a flange portion having a hole in an axial direction for the insertion of the sun gear, and slit portions in at least a side surface thereof for mounting the planet gears, and a shaft portion extending forward from the flange portion in the axial direction. The flange portion is shaped by forging. A hammer is held on the spindle; an anvil is impacted by the hammer in a rotational direction. A hammer case houses the hammer and holds the anvil in a rotatable manner; a tool-accessory retaining part is formed on the anvil; and a coil spring biases the hammer toward the anvil.

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First Claim