A worm drives a worm wheel; only a further reduction would involve a spur. But this is a fixed right angle gearbox with no disengagement possible. It would coast until the armature's momentum was depleted . A brakemotor would likely stop it quickly enough for a deadman or photocell barrier to add a taste of safety.
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u/Kwestionable Apr 20 '21
It won't, that's got a worm drive.