Kennametal 2256128 NGP2062 KC5010 Grooving Insert

Product Description

The KENNAMETAL 2256128 is a solid carbide grooving insert in the Top Notch series, designed for precision external grooving and parting operations on CNC lathes and turning centers. It carries the NGP2062 insert size designation and runs in grade KC5010 with a PVD-applied TiAlN coating, making it well-suited for cutting steels and cast irons where heat resistance and edge retention are priorities. The insert features a positive rake geometry with a 5-degree rake angle and a 3-degree lead angle, promoting clean chip evacuation. Cutting width is 1.58 mm and maximum depth of cut is 2.79 mm. This insert is installed by machinists and CNC operators working in production turning environments.

The 2256128 is intended for right-hand grooving applications in metric-measurement setups. It fits Top Notch series toolholders that accept the NGP2062 insert size. Typical use cases include shallow external grooves, undercuts, and O-ring groove profiles on turned components. The included angle is 55 degrees, the corner radius is 0.19 mm, and the insert does not feature a full radius profile. It is a single-use, non-multi-use insert appropriate for high-production runs where consistent dimensional accuracy is required.

Key Features

• Solid carbide construction in manufacturer grade KC5010 for wear resistance in steel and cast iron
• PVD TiAlN coating for elevated temperature resistance and extended tool life
• 1.58 mm cutting width with a 2.79 mm maximum depth of cut
• Positive rake geometry at 5 degrees promotes efficient chip flow and reduced cutting forces
• 0.19 mm corner radius with 55-degree included angle for precise groove geometry
• Right-hand orientation, Top Notch series, NGP2062 insert size

Compatibility

Designed for use with Top Notch series toolholders accepting the NGP2062 insert size. Compatible toolholder references include systems listed under the MSC/Manufacturer Number NGP2062R/L designation. Verify toolholder bore and clamping style before installation.

Installation Notes

This insert is installed by qualified machinists or CNC operators following standard turning insert exchange procedures. Power down and lock out the machine spindle before changing inserts. Use the correct torque wrench and seating screw specified for the Top Notch toolholder — do not over-torque the clamping screw, as solid carbide inserts are brittle and susceptible to seating stress. Inspect the toolholder pocket and clamp for wear or debris before seating the insert.