Kennametal 1112974 Grooving Insert NR2047 KC730 Carbide

Product Description

The KENNAMETAL 1112974 is a solid carbide grooving insert in the Top Notch series, designed for external grooving and parting operations on CNC lathes and turning centers. It carries a KC730 grade designation with a PVD-applied TiN coating, which provides wear resistance and edge toughness on a range of workpiece materials. The insert features a left-hand cutting orientation, a 2.39 mm cutting width, and a maximum depth of cut of 2.79 mm with a full corner radius of 1.19 mm. A neutral rake geometry and 55-degree included angle round out the cutting profile. This insert is installed by machinists and CNC turning technicians in production and job-shop environments.

This insert is suited for grooving, undercutting, and parting operations on metallic workpieces. The KC730 carbide grade with TiN coating is appropriate for material grades C2, C3, and C4, covering a range of cast irons, non-ferrous alloys, and general-purpose steels. The Top Notch series toolholding system provides a secure, repeatable seat, making this insert practical for both high-volume production runs and precision single-piece work where consistent groove geometry is required.

Key Features

• Solid carbide construction with PVD TiN coating for wear resistance and extended tool life
• KC730 manufacturer grade suited for C2, C3, and C4 material classifications
• 2.39 mm cutting width with a maximum depth of cut of 2.79 mm
• Full corner radius of 1.19 mm for smooth groove floor geometry
• Left-hand cutting orientation with neutral rake and 55-degree included angle
• Compatible with the Top Notch series toolholding system for secure insert retention

Compatibility

Designed for use with Top Notch series toolholders that accept NR-style inserts at size 2047. Refer to KENNAMETAL Top Notch toolholder selection guides to confirm holder compatibility before ordering.

Installation Notes

Insert installation and replacement should be performed by a qualified machinist or CNC technician with the machine powered down and the spindle locked. Use the appropriate torx or hex key as specified by the toolholder manufacturer when seating the insert clamp — do not overtighten. Verify insert orientation matches the programmed tool path direction before resuming cuts. Inspect the insert seat and clamping surfaces for chips or debris before installing a new insert.