Kennametal 1163402 NPGR51 KC850 Profiling Insert

Product Description

The KENNAMETAL 1163402 is a solid carbide profiling and turning insert in the Top Notch series, designed for right-hand cutting operations on steel and stainless steel workpieces. It carries the NPGR51 style designation and is manufactured in the KC850 grade using a CVD coating process. The insert features a parallelogram shape with a positive rake angle of 10 degrees and a relief angle of 8 degrees. With a corner radius of 0.0156 inches and two cutting edges, it delivers controlled chip formation during profiling passes. Licensed machinists and CNC operators install this insert in compatible Top Notch toolholders for finish and semi-finish turning applications.

This insert is suited for profiling and turning operations on steel (ISO P) and stainless steel (ISO M) workpieces, covering material grades P30, P40, M30, and M40. It is appropriate for both CNC lathe and manual turning setups where a right-hand insert with a shallow corner radius is required. The maximum depth of cut is 0.1250 inches, making it a practical choice for finish profiling passes where dimensional accuracy and surface finish are priorities. Machinists working in job shops, production turning cells, and maintenance machining operations will find this insert fits standard Top Notch clamping systems.

Key Features

• NPGR51 insert style with KC850 carbide grade for steel and stainless steel cutting
• CVD coating process applied to solid carbide substrate
• Positive rake geometry (10-degree rake angle, 8-degree relief angle) reduces cutting forces
• Corner radius of 0.0156 inches (0.40 mm) for controlled profiling transitions
• Two cutting edges per insert; right-hand hand designation
• Clamp-style insert holding method; fits Top Notch series toolholders
• 55-degree included angle parallelogram shape for profiling clearance

Compatibility

Designed for use in Top Notch series clamping toolholders that accept the NPGR51R insert style. ISO code reference is KCGR110304R08. Standards designations are NPGR51R and KCGR110304R08. Confirm toolholder seat and clamp compatibility before ordering.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before seating or replacing inserts. Use the appropriate torx or clamp screw driver specified by the toolholder manufacturer to secure the clamp; do not overtighten. Inspect the insert pocket and clamp for wear or debris before seating a new insert to ensure proper seating and runout control.