Seco 74069128 Milling Insert OFEX05T305TN-ME07 T25M Carbide

Product Description

The SECO 74069128 is a solid carbide milling insert carrying manufacturer part number OFEX05T305TN-ME07, designed for use in indexable face and shoulder milling cutters. This single-sided, octagon-shaped insert features a TiCN coating applied via CVD process and carries the T25M manufacturer grade, which targets medium-grain carbide performance in demanding cutting applications. With 8 cutting edges, a positive rake angle of 18 degrees, and a T-Land cutting edge style, it delivers controlled chip formation and edge stability. The 0.5 inch inscribed circle, 0.1484 inch thickness, and ME07 chip breaker geometry make it well suited for productive metal removal on steel and related materials.

This insert is intended for professional machining environments where consistent performance across steel, stainless steel, superalloys, and titanium is required. It fits the SECO OFEX-05 series and is compatible with R217.43-05 and R220.43-05 cutter bodies. The neutral hand orientation and screw-holding method allow straightforward indexing without specialized tooling. Machinists in production shops, job shops, and maintenance machining operations working with ISO-classified workpiece materials P, M, and S will find this insert directly applicable to facing, shoulder milling, and contour operations.

Key Features

• Solid carbide construction with CVD-applied TiCN coating for wear resistance on steel and stainless steel
• 8 usable cutting edges per insert for extended tool life per unit cost
• ME07 chip breaker geometry supports positive rake cutting action at 18 degrees rake angle
• T-Land cutting edge style provides edge reinforcement for interrupted cuts and harder workpiece materials
• Maximum depth of cut of 0.1929 inches and effective cutting edge length of 0.2075 inches
• Neutral hand insert accommodates left- and right-hand cutter body configurations
• ISO-standard ANSI code OFEX05T305TN-ME07 for direct cross-reference and procurement

Compatibility

Confirmed compatible with SECO cutter series R217.43-05 and R220.43-05. Insert size code 05T305 fits the OFEX-05 series toolholders. Rated for workpiece materials classified as Steel (P), Stainless Steel (M), Superalloys and Titanium (S) per ISO material classification.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Power down and lock out the machine spindle before indexing or replacing inserts. Seat the insert fully against the pocket walls before torquing the clamping screw to the cutter body manufacturer specification. Inspect the pocket seating surface for chips or debris prior to each insert index to prevent premature edge failure.