Kennametal 1818375 NGD4250K KC5010 Grooving Insert

Product Description

The KENNAMETAL 1818375 is a solid carbide grooving insert in the Top Notch series, designed for external grooving and turning operations on CNC lathes and turning centers. Designated grade KC5010 with a PVD-applied TiAlN coating, this insert offers wear resistance suited for steel and cast iron applications. It features a 0.25 inch (6.35 mm) cutting width and a maximum depth of cut of 0.5 inch (12.70 mm). The right-hand orientation and positive rake angle of 10 degrees support controlled chip flow and reduced cutting forces. Licensed machinists and CNC operators handling production turning work are the primary users of this insert.

This insert is intended for use in Top Notch series toolholders accepting an insert seat size 4. It is suited for medium to heavy grooving passes in the maximum depth of cut range of 0.30 inch to 1.0 inch (10.00 mm to 20.00 mm). Typical applications include external groove turning on steel and cast iron workpieces in both job shop and production environments. The K chip breaker geometry supports chip control across a range of feed rates and depths common in these materials.

Key Features

• KC5010 grade solid carbide substrate with PVD TiAlN coating for wear and heat resistance
• 0.25 inch (6.35 mm) cutting width with a maximum depth of cut of 0.5 inch (12.70 mm)
• Positive rake angle of 10 degrees reduces cutting forces and supports clean chip evacuation
• K chip breaker geometry for reliable chip control in grooving operations
• Corner radius of 0.0225 inch (0.57 mm) for defined edge geometry
• Right-hand insert orientation for standard external grooving setups

Compatibility

Designed for use in Top Notch series toolholders accepting insert seat size 4. Compatible insert style designation is NGD; MSC and manufacturer reference number is NGD4250RK.

Installation Notes

This insert is installed by a qualified machinist or CNC operator. Power down and lock out the machine spindle before seating or changing inserts. Use the correct torx or clamping key specified for the Top Notch toolholder to secure the insert without over-torquing the clamp screw. Inspect the insert seat for chips or debris before installation to ensure proper seating and edge alignment.