Kennametal 7090640 Wnmg Carbide Turning Insert Altin

Product Description

The KENNAMETAL 7090640 is a WNMG-style trigon turning insert designed for precision metal cutting on CNC lathes and turning centers. Manufactured from carbide in grade KCU10B with an AlTiN coating, this insert delivers thermal resistance and wear protection in demanding turning applications. The 80-degree included angle and neutral hand orientation suit a wide range of general turning and profiling operations. The FF chip breaker geometry promotes controlled chip evacuation, making this insert well suited for finishing and semi-finishing passes. Machinists and CNC operators working in job shops and production environments install this insert as a direct replacement in compatible WNMG toolholders.

This insert is intended for external and internal turning applications where a trigon insert geometry is specified. The 0.40 mm corner radius makes it appropriate for light finishing cuts where a tight corner radius is required to maintain dimensional accuracy and surface finish. The neutral hand design allows use in both right-hand and left-hand toolholder configurations. Typical applications include turning of steel and alloy workpieces in production and maintenance machining environments where KCU10B-grade carbide performance is specified.

Key Features

• WNMG insert style with 80-degree included angle and trigon insert shape
• KCU10B carbide grade with AlTiN coating for thermal and wear resistance
• FF chip breaker geometry for controlled chip flow on finishing passes
• 0.40 mm (1/64 inch) corner radius for tight-tolerance finishing operations
• Neutral hand orientation compatible with right-hand and left-hand toolholders
• 6 cutting edges per insert for extended tool life per unit

Compatibility

Designed as an OEM-style replacement insert for WNMG-style turning toolholders accepting a trigon insert with insert size code 431 and a 1/2-inch inscribed circle diameter. Verify toolholder pocket specifications before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Use the appropriate torx or hex key to seat the insert clamp to the toolholder manufacturer's specified procedure. Inspect the insert pocket for debris or damage before seating a new insert, and never force an insert that does not seat flush.