Kennametal 1850067 NPGR51 KC5025 Carbide Profiling Insert

Product Description

The KENNAMETAL 1850067 is a solid carbide profiling and turning insert in the Top Notch series, designed for precision external profiling and turning operations on CNC and manual lathes. It carries the NPGR51 style designation and is manufactured in grade KC5025, an ultra-fine grain carbide with an AlTiN PVD coating. The insert measures 0.375 inches in length, 0.25 inches in inscribed circle diameter, and 0.125 inches thick, with a corner radius of 0.0156 inches (0.40 mm). The positive rake geometry and 8-degree relief angle promote clean chip evacuation and reduced cutting forces across a broad range of workpiece materials.

This insert is suited for profiling and turning applications in both production shop and jobsite machining environments. It is intended for use by machinists and CNC operators working on steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. The parallelogram insert shape and right-hand cutting orientation make it appropriate for contour turning, shoulder work, and finish passes where controlled chip formation is critical. Two cutting edges are available per insert, supporting cost-effective tool management in high-turnover production settings.

Key Features

• Grade KC5025 ultra-fine grain solid carbide with AlTiN PVD coating for extended tool life across multiple material groups
• Positive rake angle (10 degrees) and 8-degree relief angle reduce cutting forces and heat generation
• NPGR51 / KCGR110304R08 standard insert geometry for compatibility with Top Notch series toolholders
• Two cutting edges per insert for efficient cost-per-edge value in production turning
• 55-degree included angle with parallelogram shape supports profiling passes and contour work
• Right-hand cut orientation; clamp-style insert holding method

Compatibility

Designed for use in Top Notch series clamp-style toolholders that accept the NPGR51R insert style. ISO equivalent designation is KCGR110304R08. Verify toolholder pocket geometry and insert seating before use.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and clamp hardware specified by the toolholder manufacturer — do not overtighten or use improvised clamping. Confirm insert seating and clamp engagement before resuming cutting operations.