Seco 03280046 Round Milling Insert RPHT1605M0T-8-M12 F40M

Product Description

The SECO 03280046 is a round solid carbide milling insert in the RPHT-16 series, identified by the ANSI/ISO code RPHT1605M0T-8-M12. It carries a dual PVD coating of TiAlN and TiN over a fine-grain carbide substrate in manufacturer grade F40M. The insert is round in shape with an inscribed circle of 0.6299 inches (16.00 mm), a thickness of 0.2189 inches (7/32 inch), and delivers 8 usable cutting edges per insert. The positive rake geometry at 15 degrees combined with a T-Land cutting edge style and an 11-degree relief angle supports efficient chip evacuation across a range of workpiece materials. It is a single-sided, neutral-hand insert held by screw.

This insert is suited for milling operations on steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It is intended for use in face milling and shoulder milling applications on compatible cutter bodies. The M12 chip breaker geometry is designed to handle both finishing and semi-finishing passes. Typical installers are CNC machinists and toolroom technicians working in production or job-shop environments. Confirmed cutter series compatibility includes R217.29-08 and R220.29-08.

Key Features

• Round RPHT insert style with 8 cutting edges per insert for extended tool life per piece
• PVD-applied TiAlN and TiN dual coating on fine-grain solid carbide substrate, grade F40M
• Positive rake angle of 15 degrees with T-Land cutting edge for reduced cutting forces
• Maximum depth of cut of 0.3150 inches matches the corner radius and cutting edge effective length
• M12 chip breaker geometry suitable for steel, cast iron, superalloys, and titanium
• ISO-standardized geometry (ANSI/ISO code RPHT1605M0T-8-M12) for predictable fitment verification

Compatibility

Confirmed compatible cutter series: R217.29-08 and R220.29-08. Verify insert seat geometry and screw size against the specific cutter body before installation.

Installation Notes

Installation is performed by a CNC machinist or toolroom technician. Ensure the cutter body is removed from the spindle and fully de-energized before seating or replacing inserts. Use the correct torx or hex key specified by the cutter body manufacturer to achieve proper clamp screw torque — do not over-tighten, as insert fracture or seat damage can result. Inspect the pocket seat for chips or burrs before installing a new insert.