Kennametal 1184133 Milling Insert LFEW220412ERLN KC725M

Product Description

The KENNAMETAL 1184133 is a solid carbide milling insert in the LFEW series, designed for high-performance metal removal in demanding milling applications. It carries a three-layer PVD coating of TiN, TiCN, and TiN, which improves wear resistance and edge life across a range of workpiece materials. The insert measures 0.6252 inches wide and 0.1875 inches thick, with a corner radius of 0.0472 inches (1.20 mm). It is screw-held, right-hand orientation, and suits CNC milling operations run by machinists and tooling technicians working with ferrous and high-temperature alloys.

This insert is rated for use on steel, stainless steel, superalloys, and titanium, corresponding to ISO material groups P, M, and S. It fits applications where edge stability and coating toughness are priorities, such as face milling, shoulder milling, and copy milling passes on difficult-to-machine materials. The KC725M grade with LN chip breaker geometry supports productive cuts in both roughing and semi-finishing operations on these material classes. Minimum order quantity is 5 inserts; each package contains 1.

Key Features

• Three-layer PVD coating: TiN, TiCN, TiN for extended wear resistance
• KC725M grade suited for steel, stainless steel, superalloys, and titanium (ISO P, M, S)
• Rectangle insert shape with 90-degree included angle and 25-degree relief angle
• Right-hand cutting orientation with LN chip breaker
• Screw-held mounting for secure, repeatable insert positioning
• Corner radius of 0.0472 inches (1.20 mm) for controlled edge engagement

Compatibility

Designed for use in LFEW-series milling toolholders and cutter bodies that accept LFEW220412 style inserts with screw-hold clamping. Verify toolholder seat dimensions and insert size code 3533 compatibility before installation.

Installation Notes

Insert installation and replacement should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before changing inserts. Use the appropriate Torx or hex key to the toolholder manufacturer's specified clamping procedure when seating the screw-held insert. Inspect the insert pocket and clamping screw for wear or damage before installing a new insert to ensure proper seating and runout control.