5C square collets are designed for clamping square bars and components, ensuring direct engagement between the collet geometry and the workpiece surfaces. The operating principle relies on controlled elastic deformation, activated by a drawbar that pulls the collet into a tapered spindle seat, producing uniform closure on all four sides of the profile. This configuration provides stable, slip-free clamping even under significant torsional loads.

In practical use, 5C square collets are applied in CNC lathes and automatic machines where precise angular positioning must be maintained throughout the machining cycle. Direct surface contact reduces centering errors and enhances clamping quality compared to adapted solutions. They are particularly suitable for mass production and precision engineering applications.

Selection is based on profile size and system compatibility. Compared to round collets, square versions offer improved torque transmission and stability under load.

Technically, they represent a dedicated solution for square profile workholding, ensuring precision, stability, and repeatability over time.