Kennametal 1163404 NPGR51 KC850 Profiling Insert

Product Description

The KENNAMETAL 1163404 is a solid carbide profiling and turning insert in the Top Notch series, designed for precision grooving and profiling operations on CNC lathes and turning centers. It carries the NPGR51 style designation with a KC850 manufacturer grade applied via CVD coating process. The insert features a left-hand cut orientation, a positive rake angle of 10 degrees, and a relief angle of 8 degrees. With a corner radius of 0.0156 inches and an inscribed circle of 0.25 inches, it is built for controlled, repeatable profiling passes in demanding production environments. Licensed machinists and CNC turning specialists are the primary installers.

This insert is suited for profiling and turning applications in both residential-scale job shops and high-volume commercial machining cells. It performs on steel and stainless steel workpieces, corresponding to ISO material codes P and M, and material grades P30, P40, M30, and M40. The parallelogram shape and two cutting edges allow efficient use in tight-clearance profiling passes. It is held in place by a clamp-style insert holding method, consistent with standard Top Notch toolholders. ISO code KCGR110304L08 and standard designation NPGR51L apply.

Key Features

• Solid carbide construction with KC850 grade for wear resistance on steel and stainless steel
• CVD coating process with positive rake geometry for clean chip formation
• Left-hand cut orientation with 10-degree rake angle and 8-degree relief angle
• Corner radius of 0.0156 inches for precise profiling and contour control
• Two cutting edges per insert for extended tool life per unit
• Clamp-style holding method compatible with Top Notch series toolholders

Compatibility

Designed for use in Top Notch series clamping toolholders accepting the NPGR51L standard insert. Compatible with ISO designation KCGR110304L08 tooling setups. Suitable for machining steel and stainless steel workpieces at material grades P30, P40, M30, and M40.

Installation Notes

Installation is performed by a qualified CNC machinist or toolroom technician. Before changing inserts, power down the machine and bring all axes to a safe position following standard lockout procedures. Use the appropriate torque wrench and clamp screw specified by the toolholder manufacturer — do not substitute hardware. Confirm insert seating and clamp engagement before resuming cuts.