ball screw
A mechanical linear actuator that uses recirculating ball bearings to convert rotary motion to linear motion with low friction.
This machine tool uses a high-precision ball screw.
Katakana spelling variant; less common than the mixed-kana form.
Rare kanji spelling using 螺子 for 'screw'; not commonly used.
From English 'ball' and Japanese ねじ (screw).