Seco 74016454 Milling Insert SEKR1203AFN-E07 T25M Carbide

Product Description

The SECO 74016454 is a solid carbide milling insert carrying ANSI/ISO designation SEKR1203AFN-E07 and manufactured to grade T25M. The insert features a square shape with a 90-degree included angle, four usable cutting edges, and a CVD-applied TiCN coating over a medium-grain carbide substrate. It measures 0.5000 inches in inscribed circle diameter, 0.5000 inches in length and width, and 0.1252 inches thick. A positive rake angle of 18 degrees and a honed cutting edge style combine to reduce cutting forces and promote clean chip formation. The E07 chip breaker geometry and 20-degree relief angle make this insert well suited to productive face and shoulder milling operations. Licensed HVAC, machining, and tooling professionals install and qualify this insert for production environments.

This insert is designed for face milling, shoulder milling, and general-purpose milling applications targeting steel, stainless steel, superalloys, and titanium workpiece materials. The neutral hand orientation allows flexible positioning in compatible cutter bodies. It is compatible with SECO cutter series R220.13-12, where the wedge-clamp holding method secures the insert rigidly during interrupted and continuous cuts. Maximum depth of cut reaches 0.3465 inches, and the effective cutting edge length is 0.5000 inches, supporting moderate to aggressive material-removal strategies on both CNC machining centers and manual milling machines.

Key Features

• CVD TiCN coating over medium-grain solid carbide substrate for wear resistance in steel and stainless steel cuts
• Four cutting edges per insert — neutral hand, square shape with 90-degree included angle
• Positive rake angle (18 degrees) with honed edge reduces cutting forces and tool pressure
• E07 chip breaker geometry optimized for steel, stainless steel, superalloys, and titanium
• Maximum depth of cut 0.3465 inches with effective cutting edge length of 0.5000 inches
• ISO-standard SEKR1203AFN-E07 designation ensures cross-reference accuracy

Compatibility

Designed for use in SECO cutter series R220.13-12 milling cutter bodies using a wedge-clamp insert-holding method. Insert size code 1203 with inscribed circle of 0.5000 inches. Rated for primary and secondary workpiece materials including Steel (P), Stainless Steel (M), Superalloys, and Titanium (S).

Installation Notes

Installation should be performed by a qualified machinist or tooling technician with the spindle fully stopped and the machine in a locked-out, tagged-out state per applicable shop safety procedures. Use the appropriate torx or hex key specified for the wedge-clamp system in the cutter body documentation — do not overtighten or substitute fasteners. Inspect the insert pocket and clamp for wear or damage before seating a new insert. Confirm correct insert orientation and positive engagement of the wedge clamp before resuming cutting operations.