MZG Shrink Fit Tool Holder System

The performance of Shrink Fit Tool Holders is defined by their unparalleled rigidity, exceptional balance, and extreme precision, derived directly from their unique clamping principle. The shrink fit process creates a powerful, uniform 360-degree grip on the tool shank by heating the holder's bore using an induction machine, expanding it just enough to insert the tool.

As the holder cools, it contracts with tremendous force, creating a solid, interference fit that results in a tool-holder assembly that behaves almost as a single piece of metal. This monolithic union provides the highest possible rigidity, minimizing tool deflection, virtually eliminating pull-out risk even under heavy axial loads, and enabling aggressive cutting parameters for maximum material removal rates.

Because a shrink fit holder is a single, symmetrical piece of steel with no moving parts like collets, screws, or nuts, it is inherently balanced. The runout accuracy is typically 3µm or better, ensuring that every cutting edge of the tool engages the workpiece evenly, leading to superior surface finishes, predictable tool wear, and significantly extended tool life.

The outstanding balance makes these holders ideal for High-Speed Machining (HSM), allowing them to run at very high RPMs without generating harmful vibrations that could damage the spindle or compromise part quality. The system includes specialized anti-vibration extension rods made from tungsten steel for enhanced stability.