Kennametal 1113561 NG2125 K68 Grooving Insert Top Notch

Product Description

The KENNAMETAL 1113561 is a solid carbide grooving insert in the Top Notch series, designed for external grooving and parting operations on CNC lathes and turning centers. This uncoated, bright-finish insert carries a K68 grade designation and a C3 material grade, making it well suited for machining cast iron, hardened materials, and abrasive non-ferrous workpieces where edge wear resistance is the primary concern. The cutting geometry is right-hand orientation with a neutral rake profile. Cutting width is 0.125 inches (3.18 mm) and the maximum depth of cut is 0.110 inches (2.79 mm). The corner radius measures 0.0075 inches (0.19 mm) and the included angle is 55 degrees, producing a sharp, stable cutting edge for precision groove profiles.

This insert is intended for use in residential and industrial machine shops running production turning or tool-room work. It seats into compatible Top Notch series toolholders commonly found on engine lathes, CNC turning centers, and Swiss-style screw machines. Typical applications include narrow groove cutting, undercut operations, and parting-off on cast iron, ceramics, and similar abrasive materials where an uncoated carbide edge outperforms coated alternatives. The insert size designation is 2125, and it is sold individually with a minimum order quantity of 5 units.

Key Features

• Solid carbide K68 grade with bright uncoated finish for abrasion-resistant cutting
• Cutting width of 0.125 inches (3.18 mm) for precise groove sizing
• Maximum depth of cut of 0.110 inches (2.79 mm); depth range 0.100 to 0.150 inches
• Neutral rake geometry with 55-degree included angle for stable edge engagement
• Corner radius of 0.0075 inches (0.19 mm) for tight groove-floor control
• Right-hand insert orientation for standard external grooving setups

Compatibility

Designed for use in Top Notch series toolholders compatible with NG2125 insert geometry. The MSC/Manufacturer cross-reference number for this insert is NG2125R/L.

Installation Notes

Grooving inserts must be seated and clamped by a qualified machinist following the toolholder manufacturer's clamping procedure before any machine operation begins. Ensure the machine spindle is fully stopped and all energy is locked out before changing inserts. Verify insert orientation and seating before taking a cut, as improper clamping can cause insert fracture or workpiece damage. Handle carbide inserts carefully to avoid chipping the cutting edge during installation.