Seco 02426801 SEEX1204AFN-E08 F40M Carbide Milling Insert

Product Description

The SECO 02426801 is a solid carbide milling insert carrying the ANSI/ISO designation SEEX1204AFN-E08 and manufacturer grade F40M. The insert is square in shape with a 90-degree included angle, four cutting edges, and a neutral hand orientation. A PVD-applied TiAlN and TiN dual-layer coating protects the fine-grain carbide substrate during demanding milling operations. The insert measures 0.5 inches in length and width, 0.187 inches thick, and features a 0.044-inch corner radius with a sharp cutting edge style and positive rake geometry at 25 degrees. Maximum depth of cut is 0.343 inches. Licensed HVAC and machining professionals install this insert in compatible cutter bodies for high-productivity face and shoulder milling.

This insert is suited for milling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium alloys across both primary and secondary workpiece material categories. The E08 chip breaker geometry supports stable chip formation across these material groups. The insert fits cutter series R217.53-12 and R220.53-12, making it applicable in both light and moderate roughing and finishing passes in job-shop and production environments. It is held in the cutter body via a screw-type clamping method, consistent with standard indexable tooling setups on vertical and horizontal machining centers.

Key Features

• SEEX1204AFN-E08 designation per ANSI and ISO standards
• Fine-grain solid carbide substrate with PVD TiAlN and TiN dual-layer coating
• Square shape with 90-degree included angle and four usable cutting edges
• Positive rake at 25 degrees with sharp cutting edge style for reduced cutting forces
• E08 chip breaker optimized for steel, cast iron, superalloys, and titanium
• Maximum depth of cut 0.343 inches; cutting edge effective length 0.5 inches
• Neutral hand insert compatible with screw-type cutter body clamping

Compatibility

Compatible with SECO cutter series R217.53-12 and R220.53-12 as stated by the manufacturer. This insert uses the SEEX-12 series designation and a screw-holding method; verify cutter body specifications before ordering.

Installation Notes

Installation is performed by machinists or tooling technicians on standard CNC or manual milling equipment. Always power down and lock out the machine spindle before indexing or replacing inserts. Use the correct Torx or hex key as specified by the cutter body manufacturer to seat the clamping screw; do not substitute fasteners. Inspect the insert pocket seating surface for chips or debris before installing a new insert to ensure proper seating and runout.