Seco 10008258 Shell Mill Holder CAT40 Tf Adb

Product Description

The SECO 10008258 is a CAT40 TF ADB taper shank shell mill holder designed for milling operations on CNC machining centers. It accepts a shell mill via a standard pilot interface and transmits torque from the spindle to the cutter with high rigidity. The holder features through-coolant capability, allowing cutting fluid to be delivered directly to the cutting zone for improved chip evacuation and tool life. With an overall length of 187.30 mm and a pilot diameter of 25.40 mm, this holder is suited to medium-duty face milling and shoulder milling applications. It is installed and serviced by machinists and CNC tooling technicians working in job shops, production machining environments, and toolrooms.

This shell mill holder is intended for use in CAT40 spindle machines, which are common in vertical and horizontal machining centers across general metalworking, aerospace component manufacturing, and precision parts production. The projection from flange to nose end is 100.00 mm, making it appropriate for applications that require moderate gage length. The nose diameter of 57.15 mm accommodates shell mill bodies designed for that pilot size. Through-coolant routing makes it well suited to high-feed or dry-sensitive materials where flood cooling alone is insufficient.

Key Features

• CAT40 TF ADB taper shank for direct spindle mounting on CAT40 machining centers
• Through-coolant capability delivers cutting fluid to the tool nose for improved thermal management and chip removal
• Pilot diameter of 25.40 mm for positive shell mill registration and repeatable runout
• Nose diameter of 57.15 mm accommodates standard shell mill body bores
• Flange-to-nose projection of 100.00 mm provides balanced reach without excessive overhang
• Weighs 7.14 pounds, indicating a robust steel construction appropriate for production environments

Compatibility

Designed as an OEM-style shell mill holder for CAT40 spindle machining centers using the TF ADB taper standard. Compatible with shell mills that match the 25.40 mm pilot diameter and 57.15 mm nose bore specification.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before inserting or removing the holder. Use a properly rated pull stud torqued to the spindle manufacturer's specification and verify that the taper interface is clean and free of chips or burrs before seating. Confirm through-coolant port alignment with the machine spindle coolant circuit before operation.