Tungaloy 6806214 AH120 Square Carbide Milling Insert

Product Description

The TUNGALOY 6806214 is a solid carbide milling insert in the SDKN series, manufactured in grade AH120 with a PVD-applied TiAlN coating. The insert features a square shape with a 90-degree included angle, neutral hand orientation, and a T-Land cutting edge style with a positive rake for efficient chip formation. Measuring 0.5 inches in length and width with a thickness of 0.125 inches and an inscribed circle of 0.5 inches, this single-sided insert offers four usable cutting edges per unit. It is installed by licensed machinists and tooling technicians working in CNC milling applications across metalworking and precision manufacturing environments.

This insert is suited for milling steel, stainless steel, cast iron, hard materials, superalloys, and titanium, corresponding to ISO material grades P15, M15, K15, and S10. The maximum depth of cut is 0.157 inches (4.00 mm), making it appropriate for moderate-engagement roughing and semi-finishing passes. It is held in the tool body via a clamp-style holding method and is compatible with specific cutter bodies designed for the SDKN insert platform. Applications span both production and job-shop environments where consistent tool life across diverse workpiece materials is required.

Key Features

• AH120 grade solid carbide substrate with PVD TiAlN coating for wear resistance across multiple material types
• Square insert shape with 90-degree included angle and 15-degree relief angle for stable engagement
• Positive rake with T-Land cutting edge style reduces cutting forces and supports chip control
• Four cutting edges per insert maximizes utilization and reduces per-edge tooling cost
• Compatible with ISO material grades P15, M15, K15, and S10 covering steel, stainless, cast iron, and superalloys
• Maximum depth of cut of 0.157 inches supports moderate roughing and semi-finishing operations

Compatibility

Designed for use with the following cutter body series as specified by the manufacturer: TMD4400R/LI, EMD4400RI, TGD4400-A, and EGD4400. ANSI and ISO designations for this insert are SDKN42ZTN AH120. The manufacturer catalog number for the insert geometry is SDKN42ZTN.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and locked out before seating or indexing inserts. Use the appropriate torque wrench and clamping hardware specified by the cutter body manufacturer when securing the insert clamp. Inspect the insert pocket for damage or debris before seating a new insert to ensure proper seating and edge engagement.