Which of the following is a component found in a CNC milling machine?

The spindle is a crucial component of a CNC milling machine, serving as the rotating mechanism that holds and drives the cutting tool. Its primary function is to enable the tool to move at high speeds while maintaining the precise control necessary for cutting operations. This rotation is pivotal in machining processes as it allows for the efficient shaping and removal of material from the workpiece.

In CNC milling, the spindle often has variable speed settings that can be adjusted depending on the material being machined and the type of tooling used. Proper spindle operation is essential for achieving high precision and surface finishes in the machined parts. Other components, while relevant in different contexts, do not play the same core role in the milling operation as the spindle does.