However, the collet is most often used in routers to hold the cutting bits in place. The collet is secured to the tool using a hexagonal collet nut, allowing it to be tightened or loosened to the motor arbor.

Collet Holder is a tool that forms a circular fixture around a piece of metal or wood that needs to be held. They exploit a strong clamping force on the work to grip it tightly to prevent unnecessary movement. The CNC router collet holder is a sleeve with a taper outer surface and an inner cylinder area.

A collet chuck is an alternate work holding device that also uses mechanical forces to hold a workpiece. While a collet chuck does not work with the same wide range of workpiece sizes that a jaw chuck can accommodate, it offers advantages in speed, accuracy, and productivity that may be crucial for certain jobs.

Major benefits of using a chuck are positive length as well as its gripping capability. The typical collets used for a CNC lathe move in the Z-axis based on how much the range of the diameter of the surface. Generally, the part will move 0.003in on the Z-axis for every 0.001in of variability.