Kennametal 1113892 NG3125 KC850 Grooving Insert Left Hand

Product Description

The KENNAMETAL 1113892 is a solid carbide grooving insert designed for precision external and internal grooving operations on CNC lathes and turning centers. Built to the NG3125 insert style in the Top Notch series, this left-hand insert features a CVD-applied multilayer coating of TiC, TiCN, and TiN over a KC850 carbide substrate. The KC850 grade is suited for steel and cast iron applications requiring a tough, wear-resistant cutting edge. With a 3.18 mm cutting width and a maximum depth of cut of 3.81 mm, it is sized for medium grooving work where dimensional consistency and surface finish are critical. Licensed machinists and CNC tooling technicians are the primary installers.

This insert is intended for grooving, parting, and profiling operations in metalworking environments. It carries a neutral rake geometry and a 55-degree included angle with a 0.19 mm corner radius, making it appropriate for machining steels and cast irons in material grades C5 and C6. It is suited to production turning environments where CVD-coated solid carbide tooling is specified for extended tool life and consistent chip control at moderate to high cutting speeds.

Key Features

• Solid carbide substrate with KC850 manufacturer grade for toughness and wear resistance
• CVD multilayer coating: TiC, TiCN, and TiN for heat resistance and extended edge life
• 3.18 mm cutting width with a maximum depth of cut of 3.81 mm
• Left-hand insert orientation for specific toolholder configurations
• Neutral rake geometry with 0.19 mm corner radius and 55-degree included angle
• Top Notch series insert style NG3125 for secure toolholder seating

Compatibility

Designed for use in Top Notch series toolholders that accept the NG3125 insert style. Verify toolholder specification for left-hand orientation and NG insert pocket geometry before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician familiar with lathe toolholder systems. Power down and lock out the machine before seating or changing inserts. Use the correct torque wrench and clamping hardware specified by the toolholder manufacturer to secure the insert. Inspect the insert pocket for wear or debris before installation to ensure proper seating and edge repeatability.