Seco 02827993 Milling Insert ONMU090520ANTN-M14 MK2050

Product Description

The SECO 02827993 is a solid carbide milling insert carrying the ANSI and ISO designation ONMU090520ANTN-M14 and manufactured to the MK2050 grade. The insert features an octagonal shape with 16 cutting edges, a negative rake geometry with a 15-degree rake angle, and a T-Land cutting edge style. A dual-layer PVD-applied TiSiN and TiAlN coating provides wear resistance and thermal stability at the cutting zone. The chip breaker geometry is M14, suited to medium-grain carbide stock. Inscribed circle measures 0.8661 inches and insert thickness measures 0.2189 inches. This insert is designed for face milling and shoulder milling applications where consistent edge life across multiple index positions matters.

Primary application is machining cast iron, with secondary suitability for steel and hard materials. The double-sided configuration and 16 available cutting edges make this insert a cost-effective choice for production milling environments. It installs in compatible cutter bodies via screw holding and is suited for use in both R220.48-09 and L220.48-09 cutter series. Typical users are CNC machinists and tooling specialists in job shops, production facilities, and maintenance machine shops operating milling centers with appropriate cutter body toolholders.

Key Features

• Octagonal insert shape with 16 indexable cutting edges for extended tooling economy
• Double-sided design doubles available cutting positions per insert
• PVD-applied TiSiN and TiAlN dual coating for wear resistance in cast iron and steel
• M14 chip breaker geometry optimized for medium-grain carbide performance
• Negative rake with T-Land edge prep reduces chipping on interrupted cuts
• Corner radius of 0.0787 inches and maximum depth of cut of 0.2874 inches
• Screw-holding insert style for positive, repeatable seating in cutter body pockets

Compatibility

Compatible with R220.48-09 and L220.48-09 cutter series bodies. Insert series is ONMU-09. Designed for use in milling cutter bodies that accept ONMU090520-style inserts secured by screw clamping.

Installation Notes

Installation is performed by qualified CNC machinists or tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate Torx or hex key specified by the cutter body manufacturer when tightening the clamping screw — do not over-torque. Inspect pocket seats and seating screws for wear or debris before seating a fresh cutting edge.