| 摘要 |
A planet gear speed reducer includes a casing having a receiving space defined therein for receiving an output shaft and an input shaft. The output shaft and the input shaft are longitudinally connected to each other. The output shaft includes a planet gear arm and a drive axle concentrically and longitudinally extending the planet gear arm. A third bearing is mounted in a bottom of the planet gear arm. The input shaft has a sun gear axle concentrically extends therefrom and engaged to the multiple planet gears on the planet gear arm. A fourth bearing is securely sleeved on a heel of the sun gear axle and an outer periphery of the fourth bearing is securely received within annular protrusion. A stub concentrically and longitudinally extends from a free end of the sun gear axle and securely received in the third bearing.
|
