Kennametal 1157895 SEAN1204AFENLN KC725M Milling Insert

Product Description

The KENNAMETAL 1157895 is a solid carbide milling insert in the SEAN series, identified by ISO code SEAN1204AFENLN. It carries a KC725M manufacturer grade and features a multilayer PVD coating of TiN, TiCN, and TiN for extended wear resistance and thermal protection. The insert has a square shape with a 90-degree included angle, a neutral hand orientation, and an LN chip breaker geometry. At 0.1874 inches thick with a 0.5000-inch inscribed circle and a corner radius of 0.0449 inches, this insert is engineered for consistent performance in high-demand milling operations. Licensed HVAC and mechanical trades are not the target here — this part is installed by machinists and CNC operators in production and job-shop environments.

This insert is designed for milling steel, stainless steel, superalloys, and titanium, corresponding to ISO material codes P, M, and S. It is well-suited for face milling, shoulder milling, and general-purpose milling applications where workpiece materials demand a durable, heat-resistant cutting edge. The screw-in insert holding method ensures secure clamping in compatible toolholders. It is appropriate for both roughing and finishing passes depending on feed and speed parameters selected by the operator.

Key Features

• Solid carbide substrate with multilayer PVD coating: TiN, TiCN, TiN for wear and heat resistance
• KC725M grade rated for steel, stainless steel, superalloys, and titanium (ISO P, M, S)
• LN chip breaker geometry for controlled chip evacuation
• Square insert shape with 90-degree included angle and neutral hand
• Corner radius of 0.0449 inches for edge strength and surface finish control
• Screw-in holding method for repeatable, rigid seating in toolholder

Compatibility

Designed as an OEM-style replacement insert for SEAN-series compatible milling toolholders that accept a size 43 square insert with a 0.5000-inch inscribed circle and a 3/16-inch nominal thickness.

Installation Notes

Installation is performed by a qualified machinist or CNC operator. Before changing inserts, ensure the spindle is fully stopped and the machine is locked out per applicable shop safety procedures. Use the correct torque driver for the clamping screw to avoid over-torquing the carbide insert. Inspect the toolholder pocket for debris or damage before seating the new insert.