Sandvik Coromant 6851174 Milling Insert 1130 Carbide

Product Description

The SANDVIK COROMANT 6851174 is a solid carbide milling insert in the 1130 manufacturer grade, designed for use in shoulder milling applications on modern CNC machining centers. Carrying an AlTiCrN coating applied via PVD process, this insert delivers thermal resistance and edge durability across a wide range of workpiece materials. The parallelogram-shaped, single-sided insert features a positive rake angle of 30 degrees, two cutting edges, and a corner radius of 0.40 mm. It measures 10.00 mm in length, 4.06 mm in width, and 2.40 mm in thickness, with a maximum depth of cut of 5.80 mm. Installation is screw-held, right-hand orientation. It is indexed and replaced by toolroom or machining personnel during scheduled insert changes.

This insert is built for the R390 cutter series and is compatible with 390-series milling bodies. It is suited for machining steel, stainless steel, non-ferrous metals, superalloys, titanium, and hard materials, covering ISO material application codes P, M, N, S, and H. The PM chip breaker geometry supports controlled chip formation across these material groups, making this insert appropriate for both roughing and semi-finishing passes in production environments. Typical applications include shoulder milling, face milling, and ramping operations where edge stability and coating wear resistance are priorities.

Key Features

• Solid carbide substrate with AlTiCrN PVD coating for heat and wear resistance
• 1130 manufacturer grade rated for P30, M15, and N15 material groups
• Positive rake geometry at 30 degrees reduces cutting forces on difficult materials
• PM chip breaker supports steel, stainless steel, non-ferrous, superalloys, titanium, and hard materials
• Maximum depth of cut: 5.80 mm per pass
• Corner radius of 0.40 mm (1/64 inch) reduces stress concentration at the cutting edge
• Screw-held, right-hand single-sided insert for positive seating in the pocket

Compatibility

Designed for use with the R390 cutter series (Cutter Series Compatibility: R390). ANSI and ISO code: 390R-070204M-PM 1130. Insert size code 070204. Conforms to ANSI and ISO standards.

Installation Notes

Installation is performed by a machinist or toolroom technician. Before changing inserts, ensure the spindle is fully stopped and the machine is locked out per shop safety procedures. Use the correct torque wrench and manufacturer-specified insert screw for the R390 pocket to avoid seat damage or screw failure. Inspect the pocket seating surface for chips or debris before indexing or replacing the insert.