Kennametal 1113524 NR3078 K68 Carbide Grooving Insert

Product Description

The KENNAMETAL 1113524 is a solid carbide grooving insert in the Top Notch series, designed for precision external grooving and parting operations on CNC lathes and turning centers. Built to the NR3078 style in manufacturer grade K68, this uncoated bright-finish insert delivers a 3.96 mm cutting width and a maximum depth of cut of 3.81 mm. The full-radius geometry with a corner radius of 1.98 mm produces a smooth, consistent groove profile. Neutral rake geometry supports stable cutting action across a range of workpiece materials. Installed by machinists and CNC operators in production turning environments, this insert is a direct-fit component for compatible Top Notch toolholders.

This insert is suited for grooving and profiling operations in metalworking applications where dimensional precision and repeatable performance are required. The K68 carbide grade is appropriate for a range of non-ferrous and cast iron workpiece materials, consistent with material grade C3 classification. The NR style and 3078 insert size make it compatible with standard Top Notch series grooving toolholders designed for that insert family. Typical applications include external groove cutting on turned components in job shop and production machining environments. The insert is sold individually with a minimum order quantity of 5 units.

Key Features

• Solid carbide construction in manufacturer grade K68, material grade C3
• 3.96 mm cutting width for consistent groove sizing
• Maximum depth of cut of 3.81 mm, within a range of 3.00 to 4.00 mm
• Full radius geometry with 1.98 mm corner radius for smooth groove profiles
• Bright uncoated finish suitable for applications where coating is not required
• Neutral rake angle for balanced cutting forces and versatile material compatibility
• Right-hand insert orientation for standard lathe turning setups

Compatibility

Designed for use with Kennametal Top Notch series toolholders accepting the NR3078 insert style. MSC and manufacturer cross-reference number NR3078R/L.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine is powered down and all axes are locked before changing inserts. Seat the insert fully into the toolholder pocket and verify clamping torque with the toolholder manufacturer specifications. Inspect the insert seat and clamping screw for wear or debris before installation to ensure proper seating and runout control.