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Is a lead-screw design any advantage over belts or gears?

April 26, 2017advantage belts design gears

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Is a lead-screw design any advantage over belts or gears?

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The biggest difference in servo performance is between systems that can back-driven versus systems that cannot be back-driven. In many cases, lead-screw or ball-screw designs will not be back-driven. On the other hand, many designs with belts and gears can be back-driven.