Seco 02744586 MM4500 Solid Carbide Milling Insert

Product Description

The SECO 02744586 is a solid carbide milling insert in the 218.19 series, designed for high-performance metal removal in demanding cutting applications. Carrying the MM4500 manufacturer grade with a CVD-applied TiCN and Al2O3 coating, this trigon-shaped insert delivers consistent edge life across difficult workpiece materials. It features a positive rake angle of 10 degrees, a 12-degree relief angle, and a T-Land cutting edge style. The insert measures 0.1874 inches thick with an inscribed circle of 0.4402 inches and a corner radius of 0.0472 inches. Installation is performed by machining professionals in CNC milling operations where insert grades and geometries are matched to specific material groups.

This insert is suited for milling stainless steel as its primary application, with secondary capability on steel, superalloys, and titanium. The M08 chip breaker geometry is optimized for medium cutting conditions in these material groups. The neutral hand orientation makes it compatible with standard trigon insert pockets in the applicable cutter bodies. It is sold individually but carries a minimum order quantity of 10 pieces, making it appropriate for shop-level restocking or production runs where consistent grade and geometry are required across multiple cutters.

Key Features

• MM4500 grade with CVD TiCN and Al2O3 multilayer coating for extended tool life on stainless steel and superalloys
• Trigon (60-degree included angle) insert shape with 3 cutting edges per insert
• Positive rake angle and T-Land cutting edge style for controlled chip formation
• Corner radius of 0.0472 inches (3/64 inch) for surface finish consistency
• Maximum depth of cut of 0.0790 inches
• Screw-mounted, single-sided insert with neutral hand for broad pocket compatibility

Compatibility

Compatible cutter series include R218.19-32, R217.21-R160, and R220.21-R160 as stated by the manufacturer. ANSI and ISO code for this insert is 218.19-160T-04-M08.

Installation Notes

This insert is installed by qualified machinists or tooling technicians into compatible milling cutter bodies using the screw-clamp holding method. Power down and lock out the spindle before changing inserts. Inspect the insert pocket seat and clamping screw for wear or damage before seating a new insert. Follow the cutter body manufacturer torque specification for the clamping screw — do not over-torque, as this can fracture the carbide insert.