Kennametal 2458791 Milling Insert OFKT06L5AFSNHB KC522M

Product Description

The KENNAMETAL 2458791 is a solid carbide milling insert in the OFKT series, cataloged under ISO code OFKT06L5AFSNHB and ANSI code OFKT53AFSN4HB. It features an octagon shape with 8 cutting edges, a TiAlN coating applied via PVD process, and a positive rake geometry with a 5-degree rake angle. The insert measures 0.1969 inches thick with an inscribed circle of 0.5787 inches. Designed for use in compatible KSOM cutter bodies, this insert is installed by machinists and tooling technicians in production milling operations targeting steel, stainless steel, cast iron, superalloys, and titanium workpieces.

This insert is suited for medium to high-demand milling applications in both production shop and job shop environments. The HB chip breaker geometry with chamfered and honed cutting edge style provides controlled chip formation and edge stability across the primary workpiece materials: steel (P), stainless steel (M), cast iron (K), and superalloys and titanium (S). A maximum depth of cut of 0.2360 inches and a corner radius of 0.0315 inches (1/32 inch) support a range of finishing and semi-finishing passes. The neutral hand configuration allows flexible positioning in compatible tooling setups.

Key Features

• Octagon insert shape with 8 cutting edges for extended tool life per insert
• TiAlN coating via PVD process for heat resistance in steel and stainless steel milling
• Positive rake geometry (5-degree rake angle) reduces cutting forces
• HB chip breaker with chamfered and honed edge style for chip control and edge durability
• Maximum depth of cut 0.2360 inches with corner radius 0.0315 inches
• Single-sided insert held by screw; neutral hand for flexible tooling orientation

Compatibility

Compatible with KSOM cutter series tooling bodies. Conforms to ANSI and ISO insert standards; ANSI code OFKT53AFSN4HB, ISO code OFKT06L5AFSNHB. Intended for machining steel, stainless steel, cast iron, superalloys, and titanium workpieces. Insert size code 53, material grade C1.

Installation Notes

This insert is installed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully in the pocket and secure with the clamping screw to the torque specified by the cutter body manufacturer. Inspect the pocket seat and screw threads for damage before installation to avoid insert movement under cutting load.