Techniks 29008 Shrink-fit Tool Holder CAT40 5 in Projection

Product Description

The TECHNIKS 29008 is a shrink-fit tool holder adapter designed for CNC machining centers using a CAT40 taper shank interface. It provides a 5-inch projection with a 0.43-inch nose diameter and supports through-coolant delivery, making it well suited for deep-reach cutting operations where coolant must be directed to the cutting edge. Shrink-fit technology creates a thermally bonded, zero-runout grip on the tool shank, improving surface finish and tool life compared to collet or set-screw holders. Machinists and tooling technicians typically specify this holder when tight tolerances and rigid clamping are required.

This adapter is intended for use on vertical and horizontal machining centers equipped with CAT40 spindle interfaces. The 5-inch projection allows access to deep features, pockets, and bores where shorter holders would create clearance problems. The 3/16-inch hole diameter accommodates through-coolant shanks on compatible cutting tools. It is suited to production environments in aerospace, mold-and-die, and general precision machining where consistent clamping force and repeatability are critical.

Key Features

• CAT40 taper shank for direct spindle mounting on standard machining centers
• 5-inch projection for extended reach into deep pockets and bores
• 0.43-inch nose diameter supports small-diameter shrink-fit tool shanks
• 3/16-inch through-coolant hole delivers coolant directly to the cutting zone
• Shrink-fit interface eliminates runout associated with collet or side-lock holders

Compatibility

Designed for use with CAT40-spindle CNC machining centers. Compatible with shrink-fit cutting tool shanks sized to fit the 0.43-inch bore. Through-coolant function requires a machining center with internal coolant delivery capability.

Installation Notes

Shrink-fit tool holders require an induction heating or hot-air shrink-fit unit to install and release cutting tools - never use an open flame. Power down and lock out the machining center spindle before removing or installing the tool holder. Confirm the CAT40 retention knob is torqued to the machine spindle manufacturer's specification before operation. Through-coolant connections should be verified for leak-free seating before running the spindle.