Kennametal 1850012 NPR52 KC5025 Carbide Profiling Insert

Product Description

The KENNAMETAL 1850012 is a solid carbide profiling and turning insert in the Top Notch series, designed for high-precision material removal on CNC lathes and turning centers. It carries the NPR52 insert style designation and is manufactured from ultra fine grain carbide with the KC5025 grade. The insert features an AlTiN coating applied via PVD process, which supports extended tool life at elevated cutting temperatures. At 0.125 inches thick with a 0.0312-inch corner radius, it is engineered for profiling passes where dimensional accuracy and edge integrity are critical. Licensed machinists and CNC operators install this insert as part of standard turning toolholders.

This insert is suited for profiling and turning applications across a broad range of workpiece materials including steel, stainless steel, cast iron, non-ferrous metals, and superalloys including titanium. The negative rake geometry and 55-degree included angle make it well matched to interrupted cuts and finishing passes on harder materials. It installs in right-hand orientation via screw clamping and is designed for use in Top Notch series toolholders. The maximum depth of cut is 0.1257 inches, making it appropriate for moderate to light profiling passes in production turning environments.

Key Features

• Ultra fine grain solid carbide substrate with KC5025 manufacturer grade for wear resistance
• AlTiN coating via PVD process for thermal stability and extended edge life
• NPR52 insert style with parallelogram shape and 55-degree included angle
• Negative rake angle of 10 degrees with 0-degree relief angle for stable cutting geometry
• 4 usable cutting edges per insert maximizing cost per edge
• Screw-clamping insert holding method for secure, repeatable seating in compatible toolholders

Compatibility

Designed as an OEM-style replacement insert for Top Notch series toolholders accepting NPR52 style inserts. ISO code reference is KCGX110308R15. Compatible toolholder selection should confirm right-hand orientation and screw-clamp insert pocket configuration.

Installation Notes

This insert is installed and changed by machinists or CNC tooling technicians. Before replacing inserts, ensure the machine is powered down and the spindle is fully stopped. Use the appropriate Torx or hex key per the toolholder manufacturer specification to seat the clamping screw. Inspect the insert pocket and clamping screw threads for wear or contamination before installing a new insert to maintain proper seating and runout.