Kennametal 4109661 Grooving Insert NG2031 KCU25 Solid Carbide

Product Description

The KENNAMETAL 4109661 is a solid carbide grooving insert designed for precision grooving operations on CNC lathes and turning centers. Built to the NG2031 insert size specification within the Top Notch series, it delivers a cutting width of 0.79 mm (0.0311 inches) and a maximum depth of cut of 1.27 mm (0.0500 inches). The insert carries a KCU25 manufacturer grade and features an AlTiN coating applied via PVD process, providing thermal resistance and wear protection in demanding cutting conditions. It is configured for left-hand orientation and is held in the toolholder by a clamp-style insert holding method. This insert is installed by machinists and CNC technicians in production and job-shop turning environments.

The 4109661 is suited for metric grooving applications on turning machines where tight groove geometry control is required. The Top Notch series is a well-established platform for grooving and cutoff work on CNC lathes handling small to medium workpieces. The insert accommodates a maximum depth of cut range up to 2.00 mm, making it appropriate for shallow grooving passes in ferrous and non-ferrous materials corresponding to C2 and C6 material grades. Left-hand orientation makes it applicable for specific toolholder configurations or approach directions as required by the operation.

Key Features

• Solid carbide substrate with KCU25 grade for consistent edge integrity at elevated cutting temperatures
• AlTiN coating via PVD process for improved oxidation resistance and extended tool life
• Cutting width of 0.79 mm for precise, narrow groove geometry
• Maximum depth of cut of 1.27 mm with a range up to 2.00 mm for flexible pass depth
• Left-hand insert orientation for compatible Top Notch series toolholders
• Corner radius of 0.09 mm (0.0035 inches) for controlled groove edge profile

Compatibility

Designed for use with Top Notch series clamp-style grooving toolholders that accept NG2031 insert size. MSC/Manufacturer cross-reference number is NG2031R/L.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. The machine spindle must be fully stopped and the turret locked out before changing inserts. Use the appropriate insert clamp screw and torque driver specified for the Top Notch toolholder; do not overtighten by hand without the proper tool. Verify left-hand orientation and insert seating in the pocket before resuming operation.