Kennametal 4109931 Grooving Insert NRD3062 KCU25 Carbide

Product Description

The KENNAMETAL 4109931 is a solid carbide grooving insert in the Top Notch series, designed for precision grooving and parting operations on CNC lathes and turning centers. Manufactured to an NRD3062 insert style in a left-hand orientation, it features a KCU25 grade substrate with a PVD-applied AlTiN coating for improved wear resistance and thermal performance. The cutting width is 3.18 mm (0.1252 inches) with a maximum depth of cut of 6.35 mm (0.2500 inches) and a full corner radius of 1.59 mm (0.0626 inches). This insert is installed using a clamp-style holding method and is suited for production machining environments where dimensional consistency is critical.

This insert is intended for use in metal-cutting applications where precise groove width and depth control are required, including external grooving, face grooving, and parting on ferrous and non-ferrous workpieces. The Top Notch series is a recognized platform for clamp-held grooving inserts used in job shops and production turning operations. The left-hand designation indicates the insert is intended for specific tool body orientations — verify holder hand before ordering. The included angle of 55 degrees and full-radius geometry suit profiling and groove-bottom finishing passes.

Key Features

• KCU25 grade solid carbide substrate with PVD AlTiN coating for extended tool life
• 3.18 mm cutting width with full corner radius of 1.59 mm for consistent groove geometry
• Maximum depth of cut of 6.35 mm; effective range 5.00 mm to 10.00 mm
• Left-hand insert orientation for compatible Top Notch series toolholders
• Clamp-style insert holding method for positive, repeatable seating
• 55-degree included angle geometry suited for profiling and finish grooving passes

Compatibility

Designed for use in Top Notch series clamp-style grooving toolholders that accept NRD3062 insert geometry. The MSC and manufacturer cross-reference number is NRD3062R/L. Verify toolholder hand and insert seat geometry before installation.

Installation Notes

This insert is installed by a machinist or CNC tooling technician using the appropriate Top Notch series clamping hardware — ensure the machine spindle is fully stopped and the turret is locked before changing inserts. Use the correct torque specification listed in the toolholder manufacturer documentation for the clamp screw. Inspect the insert pocket and clamp for chips or wear before seating a new insert. Do not attempt to regrind or recoat this insert; it is a single-use, indexable cutting tool.