Kennametal 1114666 NGP3125 K68 Grooving Insert Top Notch

Product Description

The KENNAMETAL 1114666 is a solid carbide grooving insert in the Top Notch series, designed for precision grooving and parting operations on CNC lathes and turning centers. It carries a manufacturer grade of K68 with a bright uncoated finish, making it well suited for machining cast iron, hardened steels, and abrasion-resistant materials where coating buildup would reduce edge sharpness. The insert features a 3.18 mm cutting width and a maximum depth of cut of 3.81 mm, with a positive rake angle of 5 degrees and a corner radius of 0.19 mm for clean groove geometry. It is a right-hand orientation insert. Machinists and tooling technicians install this insert into compatible Top Notch grooving toolholders.

This insert is used in external grooving, profiling, and light parting applications on manual and CNC turning equipment. It is appropriate for both job shop and production environments where consistent groove width and depth control are required. The NGP insert style and 3125 insert size designation indicate compatibility with standard Top Notch series toolholders. The 55-degree included angle and 3-degree lead angle contribute to stable chip formation during groove entry. This insert is sold individually and carries a minimum order quantity of 5 units.

Key Features

• Solid carbide K68 grade with bright uncoated finish for abrasion resistance
• 3.18 mm cutting width with maximum depth of cut of 3.81 mm
• Positive rake angle of 5 degrees for reduced cutting forces
• Corner radius of 0.19 mm for accurate groove bottom geometry
• Right-hand orientation, NGP insert style, Top Notch series
• 55-degree included angle and 3-degree lead angle for stable entry

Compatibility

Designed for use with KENNAMETAL Top Notch series grooving toolholders that accept the NGP 3125 insert style in right-hand configuration.

Installation Notes

This insert is installed and replaced by a machinist or tooling technician. Power down and lock out the machine spindle before seating or removing any insert. Use the appropriate torque wrench and Top Notch clamping hardware specified for the toolholder to secure the insert without cracking the carbide substrate. Inspect the pocket and clamping surfaces for wear or debris before seating a new insert.