Kennametal 1113613 Grooving Insert NG4189 K68 Carbide

Product Description

The KENNAMETAL 1113613 is a solid carbide grooving insert in the Top Notch series, designed for external grooving and cutoff operations on CNC lathes and turning centers. It carries a K68 grade designation and is supplied in an uncoated (bright) finish, making it suited for cutting non-ferrous metals, cast iron, and abrasive materials where coating adhesion is a concern. The insert features a left-hand orientation, a 0.189-inch (4.80 mm) cutting width, and a maximum depth of cut of 0.250 inch (6.35 mm). A 0.0225-inch (0.57 mm) corner radius and a neutral rake geometry contribute to consistent chip formation and edge stability during grooving passes.

This insert is intended for use in turning applications where precise groove width and depth control are required. The NG-style insert seats into a size-4 Top Notch toolholder. With a C3 material grade classification and a 55-degree included angle, it is well matched to finishing and semi-finishing grooving cuts in production environments. Machinists and CNC operators working in job shops or production turning cells will find it appropriate for groove widths in the 0.189-inch range with depths falling within the 0.200- to 0.300-inch range.

Key Features

• Solid carbide K68 grade, uncoated (bright) finish for abrasive and non-ferrous material applications
• Left-hand insert orientation for right-to-left grooving cuts
• 0.189-inch (4.80 mm) cutting width with a maximum depth of cut of 0.250 inch (6.35 mm)
• 0.0225-inch (0.57 mm) corner radius with neutral rake geometry
• NG4189 insert style, size-4 seat, Top Notch series toolholder compatible
• 55-degree included angle for defined groove geometry

Compatibility

Designed for use with Top Notch series, size-4 insert seat toolholders that accept the NG-style insert geometry. Confirm toolholder compatibility with the NG4189 insert style before ordering.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine before seating or removing the insert. Ensure the insert pocket and seating surface are clean and free of chips before installing the insert. Follow the toolholder manufacturer's clamping torque guidance and verify secure seating before resuming cutting operations.