Walter 7091883 CNMG120402-FM5 WSM10S Turning Insert

Product Description

The WALTER 7091883 is a solid carbide turning insert in the CNMG-FM5 series, designated ISO code CNMG120402-FM5 WSM10S. It features a multilayer PVD coating of TiAlN, Al2O3, and Al, designed to resist heat and wear during demanding machining operations. The insert has an 80-degree diamond shape with a neutral hand orientation, a 0.2 mm corner radius, and four usable cutting edges. With a maximum depth of cut of 12.9 mm and a 12.7 mm inscribed circle, it is suited for medium turning passes on difficult-to-machine materials. Licensed machinists and CNC turning specialists are the primary installers of this insert.

This insert is engineered primarily for stainless steel and superalloys and titanium, with secondary application on steel workpieces. It is rated for turning, facing, and boring operations, making it a multi-use option on CNC lathes and turning centers in both production and job-shop environments. The FM5 chip breaker geometry and chamfered and honed cutting edge style support stable chip control during interrupted cuts and continuous passes at moderate to high feeds.

Key Features

• PVD-applied TiAlN, Al2O3, and Al multilayer coating for heat resistance and extended tool life
• FM5 chip breaker geometry with chamfered and honed edge for controlled chip evacuation
• Four cutting edges per insert, maximizing cost-per-edge value
• Neutral hand orientation for flexible use on standard and driven tooling setups
• Compatible with clamp and pin insert holding methods
• Multi-use application: turning, facing, and boring in a single insert grade

Compatibility

Designed for use in CNMG-style toolholders that accept a 12.7 mm inscribed circle, 4.76 mm thick, 80-degree diamond insert with a 5.16 mm hole diameter. Industry standard number CNMG4(3)0.5-FM5 WSM10S. Conforms to ANSI and ISO standards for CNMG insert geometry.

Installation Notes

Installation is performed by a machinist or tooling technician on a CNC or manual lathe. Power down and lock out the machine spindle before seating or replacing the insert. Ensure the toolholder pocket and clamping surfaces are clean and free of chips before installing. Use the correct torque tool for the clamping screw as specified by the toolholder manufacturer; do not overtighten, as this can fracture the carbide substrate.