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Specified pitches and prospects of the worm do not let the worm equipment to travel the worm. This is beneficial when the software wants to lock the output if the application is running in the reverse path. When the helix angle is less than 5°, the worm is self-locking. When the helix angle is better than 10°, the worm can be pushed back again. Worm and worm gear assemblies must be mounted on vertical, non-intersecting shafts.
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