Kennametal 4109811 Grooving Insert NG3122 KCU25 Carbide

Product Description

The KENNAMETAL 4109811 is a solid carbide grooving insert designed for precision external grooving and parting operations on CNC lathes and turning centers. Manufactured to the NG3122 style in the Top Notch series, this right-hand insert carries a KCU25 grade designation and an AlTiN coating applied via PVD process. The cutting width measures 3.10 mm (0.122 inches), with a maximum depth of cut of 3.81 mm (0.150 inches). The AlTiN finish provides thermal resistance and wear protection in demanding interrupted-cut and dry-machining applications. Machinists and toolroom technicians select this insert for consistent, repeatable groove geometry in steel and cast iron workpieces.

This insert is suited for use on production turning equipment in both job-shop and high-volume manufacturing environments. It fits clamp-style Top Notch toolholders and is appropriate for grooving operations where tight width tolerance and controlled depth are required. The metric sizing and 55-degree included angle make it well matched to metric-dimensioned groove profiles. Material grade ratings of C2 and C6 indicate suitability across a range of ferrous and non-ferrous turning applications.

Key Features

• Solid carbide construction with KCU25 manufacturer grade for strength and wear resistance
• AlTiN coating via PVD process for elevated-temperature and dry-cutting performance
• 3.10 mm cutting width with a maximum depth of cut range of 3.00 to 4.00 mm
• Corner radius of 0.19 mm (0.0075 inches) for controlled groove edge geometry
• Right-hand insert orientation for standard clamp-style Top Notch toolholder systems
• 55-degree included angle compatible with metric groove profile requirements

Compatibility

Designed for use with clamp-style Top Notch series toolholders accepting NG-style grooving inserts. Compatible holder reference is MSC/Manufacturer Number NG3122R/L as stated in the supplier data.

Installation Notes

Installation is performed by a machinist or toolroom technician. Power down and lock out the machine spindle before seating or replacing the insert. Secure the insert fully in the clamp before resuming cuts, and verify cutting width and depth-of-cut settings against the workpiece drawing before engaging the tool. Do not exceed the stated maximum depth of cut of 3.81 mm in a single pass.