Kennametal 1162528 SPUN190412 KC725M Carbide Milling Insert

Product Description

The KENNAMETAL 1162528 is a solid carbide milling insert manufactured to ISO code SPUN190412 and ANSI code SPU633. It carries a KC725M grade designation and features a TiAlN coating applied via PVD process, providing wear resistance and thermal stability during interrupted and continuous milling operations. The insert has a square shape with a neutral hand orientation, a positive rake geometry, and a honed cutting edge style. With 4 usable cutting edges and a flat-top chip breaker, it suits production milling environments where consistent tool life across multiple index positions is required. Licensed machinists and CNC operators handling ferrous and exotic alloys are the primary users of this insert.

This insert is designed for milling applications in steel, stainless steel, superalloys, and titanium, corresponding to material grade classifications C5, C6, and C7 and ISO material codes P, M, and S. It is suited for use in screw-retained insert toolholders that accept SPUN-series square inserts with a 3/4 inch inscribed circle. Typical install scenarios include face milling, shoulder milling, and general-purpose milling on CNC machining centers in job shop and production environments. The maximum depth of cut supported is 0.3681 inches.

Key Features

• KC725M grade with TiAlN PVD coating for extended wear resistance on steel and superalloys
• 4 cutting edges on a single-sided square insert for cost-efficient indexing
• Positive rake geometry with honed cutting edge reduces cutting forces on difficult materials
• Flat-top chip breaker design simplifies chip control in general milling applications
• Neutral hand orientation compatible with standard SPUN-series screw-clamp toolholders
• Meets ANSI and ISO insert standards for broad toolholder compatibility

Compatibility

Designed as an OEM-style replacement for SPUN-series square milling insert seats accepting inserts with a 3/4 inch inscribed circle and screw-type holding method, conforming to ANSI code SPU633 and ISO code SPUN190412.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and all energy is locked out before indexing or replacing inserts. Use the correct torque wrench and insert screw specified by the toolholder manufacturer — do not overtighten, as this can fracture the carbide. Inspect the insert pocket seat and clamping screw for wear or debris before seating a new insert.