Kennametal 1114392 NGD4189K KC730 Grooving Insert Left Hand

Product Description

The KENNAMETAL 1114392 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 the KC730 grade designation and features a physical vapor deposition (PVD) TiN coating. The left-hand orientation suits specific toolholder configurations where right-to-left cutting direction is required. The insert delivers a 4.8 mm (0.189 inch) cutting width and a maximum depth of cut of 9.53 mm (0.3752 inch), making it well suited for medium-depth grooving passes in steel, cast iron, and non-ferrous materials within material grades C2, C3, and C4.

This insert is intended for use in machining environments where precise groove geometry and controlled chip flow are priorities. The NGD insert style within the Top Notch series is commonly used in production turning shops, job shops, and automated machining cells. A positive rake angle of 10 degrees and a K-style chip breaker promote lower cutting forces and help manage chip evacuation during interrupted or continuous grooving cuts. The 0.57 mm corner radius (0.0225 inch) and a 55-degree included angle support consistent groove wall quality across moderate material removal applications.

Key Features

• KC730 PVD TiN-coated solid carbide grade for extended wear resistance in C2, C3, and C4 materials
• 4.8 mm cutting width with a maximum depth of cut range of 5.00 mm to 10.00 mm
• Left-hand insert orientation for compatible Top Notch toolholders
• Positive 10-degree rake angle reduces cutting forces on the workpiece
• K-style chip breaker supports controlled chip flow in grooving applications
• 0.57 mm corner radius for consistent groove geometry and edge definition

Compatibility

Designed for use in KENNAMETAL Top Notch series toolholders with an insert seat size 4 accepting the NGD insert style in left-hand orientation. Verify toolholder hand and seat size before ordering.

Installation Notes

Installation is performed by machining technicians familiar with indexable carbide tooling. Power down and lock out the machine spindle before seating or removing the insert. Ensure the insert pocket and seating surface are clean and free of chips or debris before torquing the clamping screw to the toolholder manufacturer's specified value. Do not exceed the maximum depth of cut rating for the insert, and confirm workpiece material grade falls within C2, C3, or C4 classifications before selecting feed and speed parameters.