What Is a Collet?

A collet is a locking device that holds a tool or workpiece. It is usually used on drilling and milling machines and machining centers.
Name: collet
Name: collet
Definition: The clamping part on the tool, the tool that connects the mechanical spindle with the tool and other accessory tools.
DIN6499
ER series collet
The collet material currently used in the industrial market is: 65Mn.