Techniks 29023 CAT40 Shrink-fit Tool Holder Adapter

Product Description

The TECHNIKS 29023 is a shrink-fit tool holder adapter with a CAT40 taper shank, designed for CNC machining centers that require precise, high-rigidity tooling connections. This adapter features a 5-inch projection and a 0.375-inch bore diameter, making it suitable for holding shrink-fit tooling with tight concentricity tolerances. Through-coolant capability allows cutting fluid to be delivered directly to the cutting zone, supporting longer tool life and better chip evacuation during deep-pocket or high-feed operations. Machinists and CNC tool-crib technicians are the primary users of this adapter in production shop environments.

This adapter is applied in vertical and horizontal machining centers equipped with CAT40 spindles. The 5-inch projection provides clearance for deep-feature work or setups where the spindle nose must stand off from the workpiece or fixture. Through-coolant routing makes it a practical choice for drilling, reaming, and milling operations where flood coolant alone is insufficient. The 0.94-inch nose diameter is consistent with standard shrink-fit chuck profiles used across general-purpose and precision machining applications.

Key Features

• CAT40 taper shank for direct spindle mounting on standard CAT40 machining centers
• 5-inch projection for deep-feature access and fixture clearance
• 0.375-inch (3/8 inch) bore diameter for shrink-fit tooling
• Through-coolant design directs cutting fluid to the tool tip
• 0.94-inch nose diameter compatible with standard shrink-fit chuck profiles
• Overall length of 7.69 inches for predictable stick-out calculations

Compatibility

Designed as an OEM-style shrink-fit adapter for CNC machining centers with CAT40 taper spindles requiring a 3/8-inch bore shrink-fit holder with through-coolant capability.

Installation Notes

Installation requires a shrink-fit induction heater to expand the bore before seating or removing tooling - never attempt to press or hammer tooling into or out of a shrink-fit bore. Power down the machining center and confirm spindle rotation is fully stopped before removing or installing the holder. Verify drawbar pull-force specifications on the machining center match CAT40 retention requirements before use. Inspect the taper shank and spindle bore for chips, burrs, or contamination prior to seating.