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In modern CNC machine tools, the backlash has been eliminated by

1. preloaded ballscrews
2. rack and pinion
3. ratchet and pinion
4. slider crank mechanism

Correct answer: preloaded ballscrews

Solution

Preloaded ballscrews are designed to minimize or eliminate backlash by applying a constant force that keeps the balls in contact with the screw threads, ensuring precise movement and positioning in CNC machines.

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