| 摘要 |
A worm gear has tooth rim with inner surface, hub with outer surface where tooth rim is installed, and means for connection of tooth rim and hub. Means for connection of tooth rim and hub are arranged as collar placed on hub and two threadings, one of those is placed at outer surface of hub, and the other one is placed at inner surface of toothed crown, and by means of this one it is turned on to threading of outer surface of the hub up to the stop by collar.
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