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.

Hydraulic chuck The hydraulic membrane provides high clamping force and run-out accuracy. It is very simple to handle, without the need for separate equipment. Collets can be used, which reduces the number of chucks needed and allows coolant to be delivered through the tool (drilling) or through the collets (milling).