Kennametal 1163284 NPL51 K313 Carbide Profiling Insert

Product Description

The KENNAMETAL 1163284 is a solid carbide profiling and turning insert in the Top Notch series, designed for precision material removal on CNC lathes and turning centers. It uses NPL51 geometry with a parallelogram shape, a 55-degree included angle, and four cutting edges per insert, extending tool life between index cycles. The insert is uncoated with a WC-Co (tungsten carbide-cobalt) finish and carries a fine-grain carbide substrate under manufacturer grade K313. A 0.0156-inch corner radius and negative rake geometry make it well suited for controlled chip formation during profiling passes.

This insert is intended for profiling and turning operations on non-ferrous metals, superalloys, and titanium — workpiece material codes N and S. Its left-hand cutting orientation suits specific toolholder setups common in production turning environments. The insert seats via screw clamping, consistent with Top Notch-series toolholders. It is typically used in light to moderate profiling applications where tight radius definition and edge integrity are critical. Machinists and CNC setup technicians working on aerospace, medical, or precision-component turning will find this insert suited to those demands.

Key Features

• Four cutting edges per insert for extended indexable service life
• Fine-grain carbide substrate at grade K313 for edge sharpness on difficult materials
• Uncoated WC-Co surface — no coating delamination risk on non-ferrous or superalloy workpieces
• 0.0156-inch (0.40 mm) corner radius for precise profile definition
• Negative rake, 0-degree relief angle geometry with common chipbreaker
• Screw-mount insert holding for secure, repeatable seating in Top Notch toolholders

Compatibility

Designed for use with Top Notch series screw-clamp toolholders accepting NPL51 inserts. ISO code KCGX110304L15 and standards NPL51 and KCGX110304L15 are listed for this insert. Verify toolholder seat geometry and hand orientation before ordering.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down the machine and engage all safety locks before indexing or replacing inserts. Use the correct Torx or hex key for the clamping screw — do not overtighten, as carbide inserts are brittle and will crack under excessive clamping load. Confirm left-hand orientation matches the toolholder before seating the insert.