A ballscrew on a CNC (Computer Numerical Control) machine is a mechanical component that is used to convert rotary motion into linear motion. It consists of a screw thread and a matching nut, which are both typically made from steel. The screw thread is usually precision-ground to a high degree of accuracy. The nut contains a set of steel balls which roll along the thread as the screw rotates, this movement of the ball converts the rotary motion into linear motion.

Ballscrews are used to drive the movement of the machine’s axes, and are critical to the precision and accuracy of CNC machines. They are highly efficient and precise, and can provide smooth, accurate, and repeatable movement. They are typically found on CNC milling machines and CNC lathes, but can also be found on other types of machines that require precise linear motion.

Ballscrews can be divided into two types: precision and rolled. Precision ballscrews are made with high accuracy and are more expensive than rolled ballscrews. Rolled ballscrews are less accurate but less expensive than precision ballscrews.

In summary, Ballscrews are important components in CNC machines, as they convert rotary motion into linear motion and are responsible for the machine’s precise positioning. They provide accurate, smooth and repeatable movement, and are critical to the precision and accuracy of CNC machines.