Kennametal 1163311 NPR505 K68 Carbide Profiling Insert

Product Description

The KENNAMETAL 1163311 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 carries the NPR505 insert style designation and is manufactured to grade K68 using fine grain carbide with an uncoated WC-Co finish. The insert measures 0.125 inches thick, 0.377 inches in length, and 0.249 inches in width, with a corner radius of 0.005 inches. It features a parallelogram shape with a 55-degree included angle, negative rake geometry, a 10-degree rake angle, and zero relief angle. Four cutting edges are available per insert, maximizing tool life and cost-per-edge value.

This insert is suited for profiling and turning operations on non-ferrous metals, superalloys, and titanium workpieces. It is held by screw clamping and is configured for right-hand cutting. The fine grain carbide substrate and uncoated WC-Co surface make it particularly effective in applications where sharp cutting edges and tight tolerances are required, such as aerospace components, medical parts, and precision turned non-ferrous work. It is installed by machinists and CNC operators in production and job shop environments running Top Notch compatible toolholders.

Key Features

• NPR505 insert style in K68 fine grain solid carbide for sharp, consistent edge performance on non-ferrous and superalloy materials
• Uncoated WC-Co finish maintains edge sharpness without coating buildup, preferred for titanium and non-ferrous cutting
• 4 usable cutting edges per insert for extended service life and reduced per-edge cost
• Parallelogram shape with 55-degree included angle and 0.005-inch corner radius supports profiling and contour turning
• Screw-clamp insert holding method for secure, repeatable seating in Top Notch style toolholders
• Maximum depth of cut rated to 0.1256 inches, suitable for light to medium finishing passes

Compatibility

Designed for use in Top Notch series screw-clamp toolholders accepting NPR505 style inserts. ISO code reference is KCGX110301R15. Also cross-referenced under standard designation NPR505 and KCGX110301R15.

Installation Notes

Installation is performed by machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate Torx or hex key to seat the clamp screw to the toolholder manufacturer's specified torque range — do not over-torque, as this can fracture the carbide insert. Inspect the insert pocket and clamp for wear or debris before seating a new edge.