CNC Cutting Machine Practice Test 2025 – Complete Exam Preparation

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What do ball lead screws utilize to improve efficiency?

Spinning gears

Sliding friction

Recirculating balls

Ball lead screws utilize recirculating balls to enhance efficiency in their operation. This mechanism replaces traditional sliding friction with rolling friction, which significantly reduces resistance and energy loss during movement. The recirculating balls are housed within a helical groove along the screw and nut, allowing them to move freely and continuously in a loop. This design not only minimizes wear over time but also provides smoother motion and greater precision, which is particularly beneficial in CNC applications. By facilitating easier motion, ball lead screws enable quicker positional adjustments and improve the overall performance of CNC cutting machines.

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