Kennametal 5640486 DNMG331FP Carbide Turning Insert

Product Description

The KENNAMETAL 5640486 is a DNMG331FP geometry turning insert in the KCM15B grade, designed for precision metal cutting in CNC turning applications. The insert features a 55-degree diamond (rhombic) shape with a negative rake and negative side clearance, ground to ANSI and ISO tolerances. It is coated with a multilayer TiCN and Al2O3 finish applied via MTCVD, delivering a balance of wear resistance and toughness suited to finishing operations. With four usable cutting edges and a honed cutting edge style, the 5640486 is a cost-effective choice for high-volume production turning. Licensed machinists and CNC lathe operators install this insert in KENLOC-compatible toolholders.

The 5640486 is rated for finishing-duty turning, facing, boring, back turning, and back boring on steel (ISO P) and stainless steel (ISO M) workpieces, as well as superalloys and titanium. The KCM15B grade provides moderate wear resistance combined with toughness, making it well suited for interrupted and continuous cuts in steel and stainless steel where surface finish and edge integrity are critical. The KENLOC series toolholder system accepts this insert via clamp and pin holding methods.

Key Features

• DNMG331FP geometry with 55-degree diamond shape and FP chip breaker optimized for finishing cuts
• Multilayer TiCN and Al2O3 MTCVD coating in KCM15B grade for wear resistance and toughness on steel and stainless steel
• Four cutting edges with honed edge style and negative rake for stable, controlled cuts
• Compatible with both clamp and pin insert holding methods in KENLOC-series toolholders
• Multi-use application: turning, facing, boring, back turning, and back boring
• Conforms to ANSI and ISO standards (ANSI: DNMG331, ISO: DNMG110404)

Compatibility

Designed for use in KENLOC-series toolholders that accept DNMG-style inserts secured by clamp and pin holding methods. Suitable for CNC lathes and turning centers performing finishing operations on steel, stainless steel, superalloys, and titanium workpieces.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Power down and lock out the machine spindle before seating or replacing inserts. Ensure the insert pocket and locating pin are clean and free of chips before seating the insert, and verify the clamp applies even clamping force across the insert face. Follow the toolholder manufacturer's torque specifications for the clamping screw; do not over-torque.