Kennametal 1180955 SEKN1204AFENLN KC725M Milling Insert

Product Description

The KENNAMETAL 1180955 is a solid carbide milling insert with ISO designation SEKN1204AFENLN, manufactured to the KC725M grade. It features a square shape with a neutral hand orientation and a 90-degree included angle, making it suited for a wide range of milling operations. The insert carries a multilayer PVD coating sequence of TiN, TiCN, and TiN, which improves wear resistance and thermal stability at the cutting edge. The 20-degree relief angle and LN chip breaker geometry are designed to manage chip flow and reduce cutting forces. Thickness runs 0.1875 inches with a 1.00 mm corner radius. Licensed HVAC, machining, and tooling professionals install and service these inserts in production and maintenance environments.

This insert is designed for milling applications in steel, stainless steel, superalloys, and titanium, corresponding to ISO material groups P, M, and S. The KC725M grade is positioned for interrupted and continuous cuts across these demanding workpiece materials. It is held in place by a screw-clamping method and fits toolholders designed for the SEKN insert series. Typical use cases include face milling, shoulder milling, and general-purpose milling on CNC machining centers in both job shop and production settings.

Key Features

• Solid carbide substrate with multilayer PVD coating: TiN, TiCN, TiN for extended tool life
• Square insert shape with 90-degree included angle and neutral hand orientation
• 1.00 mm corner radius minimizes surface stress at the cutting edge
• 20-degree relief angle reduces rubbing and heat buildup on the flank face
• LN chip breaker geometry promotes controlled chip evacuation
• Screw-holding method ensures secure, repeatable seating in compatible toolholders

Compatibility

Designed as a screw-clamp replacement insert for toolholders accepting the SEKN insert series. Compatible with workpiece materials classified as steel, stainless steel, superalloys, and titanium (ISO material groups P, M, and S). Confirm toolholder pocket geometry matches SEKN1204 insert size code 43 and inscribed circle dimension of 0.6252 inches before installation.

Installation Notes

Insert replacement should be performed by a qualified machinist or tooling technician with the spindle locked and machine power isolated per shop lockout/tagout procedures. Use the manufacturer-specified torque driver for the clamping screw to ensure proper seating without over-torquing. Inspect the pocket seat and clamping screw for wear or debris before installing a new insert. Do not mix insert grades or geometries within a multi-insert cutter body unless confirmed compatible by the toolholder manufacturer.