Quote:
Originally Posted by wilful
if you use the right lead screw, you will not need a break, as the lead screw will prevent back-drive.
I suggest you call which ever company makes the lead screw you are thinking about buying and figure out which pitch and start count is right for your application.
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This is a problem I worked on two years ago (although I wanted back-driving in my case), and there's a pretty quick and easy way to figure it out. Imagine the threads strung out in a straight line rather than wrapped around the axis of the screw. At that point it's pretty simple to solve.