CNC Cutting Machine Practice Test 2026 – Complete Exam Preparation

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In what way do planetary roller lead screws differ from traditional screws?

They are less efficient

They utilize precision threaded rollers

Planetary roller lead screws utilize precision threaded rollers instead of traditional screw threads. This design enhances their efficiency and effectiveness in transforming rotary motion into linear motion. The threaded rollers distribute the load more evenly and reduce friction during operation, which allows for smoother movement and greater precision in applications. This innovative approach contributes to a higher load capacity and smoother operation compared to conventional screws, making them well-suited for various applications, including those requiring high precision and heavy loads.

The other options do not accurately reflect the characteristics or applications of planetary roller lead screws, as they are known for their efficiency and capability to handle significant loads, debunking the idea that they are only for low-load applications or incapable of handling heavy loads.

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They are exclusively used in low-load applications

They cannot handle heavy loads

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