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Shaft rotation limiter 1




The brown driving pulley transmits rotation to the blue shaft through a friction clutch. Number of turns the shaft can rotate:14.

A traveling nut (orange) moves along the threaded shaft until the frame prevents further rotation. This is a simple device, but the traveling nut can jam so tightly that a large torque is required to move the shaft from its stopped position. For a way to avoid it see

Shaft rotation limiter 2




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