Kennametal 1114885 Grooving Insert KC850 Solid Carbide

Product Description

The KENNAMETAL 1114885 is a solid carbide grooving insert in the Top Notch series, designed for precision grooving and cutoff operations on CNC lathes and turning centers. Designated style NG2125K with a KC850 grade, this insert features a CVD-applied multilayer coating of TiC, TiCN, and TiN for wear resistance and extended tool life in steel and cast iron applications. It carries a cutting width of 0.1252 inches (3.18 mm) and a maximum depth of cut of 0.1098 inches (2.79 mm). The left-hand configuration suits specific tool holders and insert pockets in the Top Notch platform. Installation is performed by machinists and CNC tooling technicians.

This insert is suited for external grooving, recessing, and cutoff operations on production turning equipment. The positive rake geometry and K-style chip breaker promote controlled chip formation when working ferrous workpiece materials in the C5 and C6 material grade range. The 55-degree included angle and 3-degree lead angle make this insert appropriate for medium-to-finish turning passes where groove geometry and wall definition are critical. Typical applications include production environments running steel and alloy steels at moderate to high cutting speeds.

Key Features

• KC850 grade with CVD multilayer TiC, TiCN, and TiN coating for wear and heat resistance
• Cutting width of 0.1252 inches (3.18 mm) for precise groove sizing
• Maximum depth of cut of 0.1098 inches (2.79 mm); rated range 0.1000 to 0.1500 inches (2.00 to 3.00 mm)
• Positive rake angle of 10 degrees with K-style chip breaker for controlled chip evacuation
• Corner radius of 0.0075 inches (0.19 mm) for defined groove edge geometry
• Left-hand insert orientation for compatible Top Notch series tool holders

Compatibility

Designed for use with compatible Top Notch series grooving tool holders that accept the NG-style insert seat in a left-hand configuration. Verify tool holder pocket specifications before installation.

Installation Notes

This insert is seated and secured by a qualified machinist or CNC tooling technician following the tool holder manufacturer's clamping procedure. Power down and lock out the machine spindle before changing inserts. Use the correct torque wrench and clamp screw specified by the tool holder manufacturer - do not overtighten or use improvised tools on the clamp. Inspect the insert pocket for chips or debris before seating the new insert to ensure proper contact and runout.