Kennametal 1114393 NRD4125 KC730 Grooving Insert Left Hand

Product Description

The KENNAMETAL 1114393 is a solid carbide grooving insert in the Top Notch series, designed for precision grooving and parting operations on CNC lathes and turning centers. It carries a PVD-applied TiN (titanium nitride) finish and features a left-hand orientation with a 0.25-inch (6.35 mm) cutting width and a maximum depth of cut of 0.50 inches (12.7 mm). The KC730 grade solid carbide substrate suits a broad range of workpiece materials, spanning material grades C2, C3, and C4. Licensed machinists and CNC operators handling production turning work will find this insert suited for tight-tolerance groove profiles where repeatable cutting geometry is required.

This insert is intended for grooving applications in metalworking environments, including external grooving on shafts, shoulders, and similar turned features. The full-radius geometry with a corner radius of 0.125 inches (3.18 mm) and a neutral rake angle supports clean, consistent chip formation. The insert seat size is 4, and it is designed for use in compatible Top Notch series toolholders. Typical applications include production turning on both ferrous and non-ferrous materials in job shop and manufacturing settings.

Key Features

• Solid carbide construction with PVD TiN coating for wear resistance and edge retention
• Left-hand cutting orientation for dedicated left-hand toolholder configurations
• 0.25-inch (6.35 mm) cutting width with a full radius corner of 0.125 inches (3.18 mm)
• Maximum depth of cut 0.50 inches (12.7 mm); depth of cut range 0.30 to 1.00 inches (10.00 to 20.00 mm)
• Neutral rake geometry for stable, controlled cutting action
• KC730 grade suitable for material grades C2, C3, and C4

Compatibility

Designed for use with Top Notch series grooving toolholders accepting insert seat size 4. Compatible with holders and systems specified for NRD-style inserts at the 4125 insert size designation.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the machine in a fully stopped and locked-out state before any insert change. Seat the insert fully and squarely in the toolholder pocket before tightening the clamping screw to the toolholder manufacturer's specified torque. Inspect the insert seat and clamp for chips or debris prior to seating. Confirm left-hand orientation matches the toolholder configuration before commencing a cut.