Techniks 29208 Shrink-fit Tool Holder CAT40 Through Coolant

Product Description

The TECHNIKS 29208 is a shrink-fit tool holder adapter with a CAT40 taper shank, designed for CNC machining centers that require precise, high-rigidity tooling interfaces. The holder features a 6mm bore diameter and an overall length of 6.63 inches, making it suitable for close-tolerance milling and drilling applications. Through-coolant capability routes cutting fluid directly to the tool tip, improving chip evacuation and extending tool life in high-speed operations. This adapter is installed by CNC setup technicians and machinists working in production or job-shop environments.

This shrink-fit holder is used in CAT40-spindle machining centers for applications where maximum runout accuracy and holding force are required. A 100mm projection and 21mm nose diameter accommodate a range of shrink-fit tooling setups. Through-coolant support makes it well suited for deep-cavity milling, drilling, and other operations where chip control and thermal management at the cutting zone are critical. Typical environments include aerospace, automotive, and general precision machining shops.

Key Features

• CAT40 taper shank for compatibility with standard CAT40 CNC spindles
• 6mm bore diameter for shrink-fit tool retention with high concentricity
• Through-coolant capability for direct coolant delivery to the cutting edge
• 100mm projection length for reach in deep-cavity and extended-reach operations
• 21mm nose diameter provides a robust clamping zone for shrink-fit tooling
• Overall length of 6.63 inches for consistent gage-line setups

Compatibility

Designed as an OEM-style shrink-fit tool holder for use in CAT40-spindle CNC machining centers equipped with through-spindle coolant capability.

Installation Notes

Installation requires a shrink-fit induction heating unit to thermally expand the bore before inserting or removing the cutting tool - never attempt to press or hammer tooling into a shrink-fit bore. Ensure the spindle and coolant supply are fully shut down before changing tooling or mounting the holder in the machine. Verify gage length and runout with a dial indicator after assembly and prior to cutting. Handle the heated holder with appropriate high-temperature gloves and allow it to cool fully before use.