Description

The SECO 74017040 is a solid carbide milling insert carrying manufacturer part number CCMX08T308T-M08 in the T25M grade. It features a diamond shape with an 80-degree included angle and a TiCN coating applied via CVD process. The insert measures 0.3161 inches inscribed circle, 0.1732 inches thick, and carries a 1/32-inch corner radius. It is designed for indexable milling cutters and is installed by machinists and tooling technicians in metal-cutting operations on CNC and manual milling machines. The positive rake geometry and T-Land cutting edge style support controlled chip formation across a range of workpiece materials.

This insert is suited for milling steel, stainless steel, superalloys, and titanium. It is classified under ISO material grades P, M, and S, making it appropriate for both roughing and semi-finishing passes in medium-grain carbide applications. The right-hand orientation and screw-holding method make it compatible with standard indexable milling toolholders. It is a single-sided insert with two cutting edges, offering a straightforward index when the first edge is worn.

Key Features

Diamond insert shape with 80-degree included angle and T-Land cutting edge style
TiCN coating applied via CVD process in manufacturer grade T25M
Positive rake angle of 15 degrees for reduced cutting forces
Two cutting edges per insert, single-sided configuration
Right-hand insert hand with screw-holding method
Compatible with Cutter Series R215.59-08 toolholders

Compatibility

Designed for use with the R215.59-08 cutter series. ANSI and ISO designation CCMX08T308T-M08 with insert size code 08T308. Suitable for machining steel, stainless steel, superalloys, and titanium per ISO material codes P, M, and S.

Installation Notes

Installation is performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torx or hex key to secure the clamping screw to the toolholder seat; do not overtighten by hand estimation alone. Inspect the insert pocket and seating surface for chips or debris before seating the new insert to ensure proper contact and runout.