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Efficiency of conventional power screw is greater...

Efficiency of conventional power screw is greater than the efficiency of recirculating ball screw.

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asked Jan 23 in Machine Design by Carter (89.5k points)

Efficiency of conventional power screw is greater than the efficiency of recirculating ball screw.

(a) True

(b) False

Someone asked me this question by my professor.

This question is part of the Screw Jack topic in lesson Threaded Joints of Machine Design

machine design
threaded joints
screw jack

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1 Answer

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answered 1 day ago by Chris (52.6k points)

Recommended answer is (b) False

To make it clear: In recirculating ball screw, sliding friction is replaced by rolling friction and efficiency increases from 40% to 90%.

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