Seco 02753258 Shrink-fit Tool Holder CAT40 0.5 in

Product Description

The SECO 02753258 is a shrink-fit tool holder adapter designed for precision CNC machining applications. It features a CAT40 taper shank for direct spindle mounting and accepts cutting tools with a 0.5 inch bore diameter. The adapter provides a 3.74 inch projection from the gauge line, a 0.944 inch nose diameter, and a 1.417 inch clamping depth. Through-coolant capability allows cutting fluid to pass directly to the tool tip, supporting high-speed and high-heat operations. Balanced to 38,000 RPM, this holder is suited for high-speed machining centers where runout and balance are critical to tool life and surface finish quality. Installed by CNC machinists and toolroom technicians.

This adapter is intended for use on CAT40-spindle vertical and horizontal machining centers in job shop, production, and aerospace machining environments. The shrink-fit clamping method delivers superior concentricity and gripping force compared to collet or set-screw holders, making it appropriate for solid carbide end mills, drills, and reamers in demanding cutting conditions. The through-coolant feature supports flood and high-pressure coolant delivery directly to the cutting zone, extending tool life in difficult materials.

Key Features

• CAT40 taper shank for direct compatibility with CAT40 spindle machines
• 0.5 inch bore diameter accepts standard solid carbide tooling
• 3.74 inch projection for reach in deep-pocket and cavity machining
• Balanced to 38,000 RPM for high-speed spindle applications
• Through-coolant design supports direct coolant delivery to the cutting edge
• 1.417 inch clamping depth provides a secure shrink-fit grip on tool shanks

Compatibility

Designed for use with CAT40-taper machining centers accepting standard shrink-fit tool holders with a 0.5 inch bore. Confirm spindle taper, drawbar pull force rating, and coolant system pressure before installation.

Installation Notes

Shrink-fit holders require an induction heating unit to expand the bore for tool insertion and removal — never apply open flame or impact force to the holder. Power down and lock out the machining center spindle before changing tooling. Verify the tool shank is clean, undamaged, and meets the specified shank diameter tolerance before shrinking in place. Follow the machine tool builder and holder manufacturer guidelines for heat cycle temperature and cool-down time to avoid dimensional distortion.