Kennametal 1817658 Grooving Insert KC5025 Carbide Tialn

Product Description

The KENNAMETAL 1817658 is a solid carbide grooving insert designed for precision external grooving and turning operations on CNC lathes and turning centers. Carrying the KC5025 manufacturer grade with a PVD-applied TiAlN coating, this right-hand insert delivers a 3.18 mm (0.1252 inch) cutting width and a maximum depth of cut of 6.35 mm (0.2500 inch). The positive rake geometry and K-style chip breaker work together to control chip flow and reduce cutting forces in steel and difficult-to-machine alloys. Machinists and CNC operators working in production turning environments will find this insert well suited to interrupted and continuous grooving passes.

This insert belongs to the Top Notch series, a system designed for secure indexing and repeatable tool positioning in grooving and threading applications. It is appropriate for use on CNC turning centers handling medium to high material grades, consistent with C2 and C6 carbide material classifications. The NFD insert style with a 55-degree included angle and a 3-degree lead angle make it a practical choice for groove profiling where dimensional consistency across production runs is required.

Key Features

• Solid carbide construction with PVD TiAlN coating for extended tool life in steel and alloy applications
• 3.18 mm cutting width (0.1252 inch) for consistent groove sizing
• Maximum depth of cut 6.35 mm (0.2500 inch); effective range 5.00 mm to 10.00 mm
• Positive rake angle of 10 degrees combined with K chip breaker for controlled chip evacuation
• Corner radius of 0.19 mm (0.0075 inch) for fine groove geometry
• Right-hand orientation; single-use insert — not a multi-use tool

Compatibility

Designed for use in Top Notch series grooving toolholders that accept NFD-style inserts. The MSC/Manufacturer cross-reference number is NFD3125R/LK. Confirm holder compatibility with insert size 3125 and NFD seating geometry before installation.

Installation Notes

Carbide grooving inserts must be seated and clamped into a compatible Top Notch toolholder by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the recommended torque wrench and clamping screw specified by the toolholder manufacturer — do not over-torque the clamp screw, as this can fracture the insert. Inspect the insert pocket for chips or debris before seating a new insert to ensure proper contact and alignment.