Techniks 29026 Shrink-fit Tool Holder CAT40 Taper Shank

Product Description

The TECHNIKS 29026 is a shrink-fit tool holder adapter designed for use with CAT40 taper shank spindles on CNC machining centers. It features a 3-inch projection length and a 1.1-inch nose diameter, making it suited for applications that require precise tool runout control and rigid clamping without mechanical collets or set screws. Through-coolant capability delivers cutting fluid directly to the tool tip, supporting high-speed machining and extended tool life in demanding metal removal operations. Licensed machinists and CNC setup technicians install this type of holder during tooling changeovers or when building out a shrink-fit tooling system.

This adapter is used in CNC milling and machining center applications where CAT40 spindle interfaces are standard. The shrink-fit design thermally expands the bore for tool insertion and contracts to grip the tool shank upon cooling, eliminating mechanical clamping components. It is well suited for high-speed roughing and finishing operations in job shops and production environments. Through-coolant support makes it particularly effective when machining ferrous materials, stainless steel, and aerospace alloys where heat management is critical.

Key Features

• CAT40 taper shank for compatibility with standard CNC machining center spindles
• 3-inch projection length for extended reach applications
• 1.1-inch nose diameter for shrink-fit thermal clamping of tool shanks
• Through-coolant capability for direct coolant delivery to the cutting zone
• No mechanical collet or set screw required, reducing runout and imbalance

Compatibility

Designed as an OEM-style shrink-fit tool holder adapter for CNC machining centers equipped with a CAT40 taper spindle interface.

Installation Notes

Installation requires a shrink-fit induction heater to thermally expand the bore before inserting or removing tool shanks - never force a tool shank without applying heat. Ensure the spindle and machine are fully powered down and the spindle has come to a complete stop before removing or installing tool holders. Follow the machining center manufacturer guidelines and applicable ANSI or ASME tooling standards for torque specifications on the retention knob. Allow the holder to return to ambient temperature and verify tool runout with a dial indicator before returning the spindle to service.