Kennametal 1112899 Grooving Insert KC730 Solid Carbide

Product Description

The KENNAMETAL 1112899 is a solid carbide grooving insert designed for precision external grooving and cutoff operations on CNC lathes and turning centers. It carries the KC730 manufacturer grade with a PVD-applied TiN finish, delivering wear resistance and edge retention on a range of workpiece materials. The insert features a right-hand cutting orientation, a 3.18 mm (0.1252 inch) cutting width, and a maximum depth of cut of 6.35 mm (0.2500 inch). A positive rake angle of 10 degrees and a K-style chip breaker geometry help control chip flow and reduce cutting forces in grooving applications.

This insert is suited for grooving operations on medium to hard materials classified under material grades C2, C3, and C4, which span cast iron, non-ferrous, and harder ferrous workpieces. It fits into the Top Notch series toolholding system, a common platform in production turning environments. The NFD insert style with a 55-degree included angle and a 3-degree lead angle makes it appropriate for both straight grooving and light profiling. Installation is performed by licensed machinists and CNC operators in job shop and production settings.

Key Features

• KC730 grade with PVD TiN coating for extended tool life in grooving applications
• 3.18 mm cutting width with a maximum depth of cut of 6.35 mm
• Positive 10-degree rake angle with K chip breaker for efficient chip control
• Right-hand cutting orientation; full radius designation: No; corner radius 0.19 mm (0.0075 inch)
• Part of the Top Notch series for compatibility with Top Notch toolholding systems
• UNSPSC Code 23242105; insert size designation 3125

Compatibility

Designed for use with Top Notch series toolholders that accept NFD-style inserts in size 3125. Compatible workpiece material grades C2, C3, and C4. The MSC/Manufacturer reference number for this insert is NFD3125R/LK.

Installation Notes

This insert is installed and replaced by qualified machinists or CNC operators. Power down and lock out the machine spindle before seating or removing any insert. Use the appropriate torx or clamping key for the Top Notch toolholder to secure the insert without over-torquing the clamp. Inspect the insert seat and clamp for chips or debris before installation to ensure proper seating and repeatable tool geometry.