Kennametal 3387910 Grooving Insert NR2M050 KC5010 Carbide

Product Description

The KENNAMETAL 3387910 is a solid carbide grooving insert designed for precision external and internal grooving operations on CNC lathes and turning centers. Part of the Top Notch series, it carries the NR insert style with a KC5010 grade and a PVD-applied TiAlN coating that improves wear resistance and tool life in demanding cutting conditions. The insert is left-hand oriented with a 1.00 mm cutting width and a maximum depth of cut of 1.27 mm. The full-radius geometry and neutral rake angle make it well suited for finishing passes and tight-tolerance groove profiles in steel and cast iron workpiece materials per the C3 and C4 material grades.

This insert is applied in metric-dimensioned grooving applications on production turning equipment. It is intended for use by machinists and CNC operators running high-precision parts where consistent groove width and depth control are critical. The 1.00 mm cutting width and 1.27 mm maximum depth of cut target narrow groove profiles common in hydraulic fittings, shaft retaining ring grooves, and similar component features. It is not a multi-use tool and is rated for a single insert style and seat configuration within the Top Notch toolholder system.

Key Features

• Solid carbide construction with PVD TiAlN coating for extended wear life
• 1.00 mm cutting width for narrow, precise groove profiles
• Maximum depth of cut of 1.27 mm suitable for shallow retaining and snap-ring grooves
• Full radius geometry with neutral rake for consistent finishing results
• Left-hand insert orientation for correct seating in compatible Top Notch toolholders
• KC5010 grade rated for C3 and C4 material groups including steel and cast iron

Compatibility

Designed for use in Top Notch series grooving toolholders that accept the NR2M050 insert size and left-hand seat configuration. Verify toolholder pocket geometry and clamping style before installation.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist or CNC technician with the machine in a full stop and lockout-tagout procedures applied. Use the correct torque wrench and seating tool specified for Top Notch clamping systems to avoid insert rocking or improper seating. Inspect the toolholder pocket for chips or wear before installing a new insert. Do not exceed the rated maximum depth of cut of 1.27 mm in a single pass.