Seco 00030431 Ball Nose Milling Insert F25M Solid Carbide

Product Description

The SECO 00030431 is a solid carbide ball nose milling insert in the 218.20 series, designed for high-performance milling operations in steel, stainless steel, and cast iron. It carries manufacturer grade F25M and is coated with TiAlN and TiN applied via a PVD coating process, providing wear resistance across demanding cutting conditions. The insert measures 0.2709 inches in inscribed circle diameter and 0.1264 inches thick, with a right-hand cut orientation and a positive rake angle of 1 degree. Two honed cutting edges and an 11-degree relief angle contribute to clean, consistent chip formation. This insert is sold individually with a minimum order quantity of 10.

This insert is suited for CNC milling applications on machining centers working with steel, stainless steel, and cast iron workpieces. Its M04 chip breaker geometry targets medium-grain material removal where controlled chip flow is critical. Compatible cutter series include R218.20-16, R218.20-0.625, and R218.24-R080, making it a direct fit for those tool bodies in both production and job-shop environments. The screw-holding method ensures secure seating in the cutter pocket during high-feed passes.

Key Features

• Ball nose insert shape for profiling and contouring cuts
• F25M grade solid carbide with TiAlN and TiN PVD coating for extended tool life
• Two honed cutting edges with positive rake and 11-degree relief angle
• M04 chip breaker optimized for steel and stainless steel material groups
• Maximum depth of cut of 0.5510 inches
• ANSI and ISO code 218.20-080ER-M04 for direct cross-reference

Compatibility

Compatible with cutter series R218.20-16, R218.20-0.625, and R218.24-R080. Rated for primary workpiece material codes H and P, with secondary material compatibility covering steel, stainless steel, and cast iron (material codes P, M, and K). Conforms to ISO standards.

Installation Notes

Installation is performed by a CNC machinist or tooling technician. Ensure the machine spindle is fully stopped and the tool body is secured before seating or replacing inserts. Use the appropriate torx or hex key to tighten the clamping screw to the tool manufacturer's specified procedure for the R218.20 or R218.24 cutter body. Inspect the pocket seating surface for chips or debris before installing a new insert to avoid micro-fracture from uneven seating.