中国工厂 Savage Gear Speed 其他数字套装自行车皮带齿轮 S3 白色旅行三菱 Canter 军用户外反向陆军不锈钢旋钮手册制造商

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Safety PROVISIONS: Worm drives must not be used as a locking mechanism to protected hefty objects, which could cause injury or damage for the duration of reverse motion. In non-potentially dangerous purposes, self-locking is necessary to prevent reverse rotation, and then a lower-pitch one-threaded worm is used to instantly lock the worm gear to stop reverse rotation.
中国工厂 Savage Gear Speed 其他数字套装自行车皮带齿轮 S3 白色旅行三菱 Canter 军用户外反向陆军不锈钢旋钮手册制造商