Kennametal 1112981 Grooving Insert NR4094 KC730 Carbide

Product Description

The KENNAMETAL 1112981 is a solid carbide grooving insert designed for precision external grooving operations on CNC lathes and turning centers. It carries the KC730 manufacturer grade with a PVD-applied TiN finish, providing wear resistance and extended tool life in demanding cutting environments. The insert features a left-hand cutting orientation, a 4.78 mm (0.1882 inch) cutting width, and a maximum depth of cut of 6.35 mm (0.2500 inch). A full corner radius of 2.39 mm (0.0941 inch) is built in, and the rake is neutral. This insert is installed and replaced by machinists and CNC operators working on production turning operations.

This insert is suited for grooving applications in the C2, C3, and C4 material grade range, covering a broad spectrum of workpiece materials including cast irons and non-ferrous metals. It belongs to the Top Notch series and fits an insert seat size 4. Typical use is in high-volume production environments where consistent groove geometry and repeatable tool life are required. The left-hand orientation makes it appropriate for specific approach directions on the lathe where a right-hand insert would not engage correctly.

Key Features

• KC730 grade solid carbide construction with PVD TiN coating for wear resistance
• 4.78 mm cutting width for precise groove sizing
• Full corner radius of 2.39 mm for smooth groove floor finish
• Maximum depth of cut of 6.35 mm, within a range of 5.00 mm to 10.00 mm
• Left-hand cutting orientation for specific toolpath requirements
• Top Notch series with insert seat size 4 for compatible toolholder fitment

Compatibility

Designed for use with Top Notch series toolholders accepting an insert seat size 4 and compatible with NR4094-style insert geometry. Verify toolholder hand orientation before installation.

Installation Notes

This insert is installed by machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing any insert. Use the correct torque wrench and clamping screw specified by the toolholder manufacturer — do not overtighten or use improvised tools on the clamping mechanism. Inspect the insert seat and clamping surfaces for debris or wear before seating the new insert.