Kennametal 4109915 Grooving Insert NR3062 KCU25 Solid Carbide

Product Description

The KENNAMETAL 4109915 is a solid carbide grooving insert designed for external grooving and parting operations on CNC lathes and turning centers. It carries the KCU25 manufacturer grade and features a physical vapor deposition (PVD)-applied AlTiN coating for improved wear resistance and thermal stability at elevated cutting speeds. The insert style is NR with a cutting width of 0.1252 inches (3.18 mm) and a maximum depth of cut of 0.1500 inches (3.81 mm). A full corner radius of 0.0626 inches (1.59 mm) produces a smooth, radiused groove bottom. The double-end design extends useful tool life before replacement is required. This insert is part of the Top Notch series and is held in place by a clamp-style toolholder.

This insert is suited for grooving, undercutting, and parting applications on ferrous and non-ferrous workpieces in production turning environments. The KCU25 grade with AlTiN coating is appropriate for a range of steel, stainless, and cast iron applications where PVD-coated carbide performs reliably. The Top Notch series is a widely used platform in job shop and production machining settings. Installation is performed by a machinist or CNC toolroom technician. The insert seats into a compatible Top Notch series clamp-style toolholder sized for insert seat size 3.

Key Features

• Solid carbide substrate with PVD-applied AlTiN coating for heat and wear resistance
• Cutting width of 0.1252 inches (3.18 mm) for precise groove sizing
• Maximum depth of cut of 0.1500 inches (3.81 mm); rated range 0.1500 to 0.2000 inches (3.00 to 4.00 mm)
• Full corner radius of 0.0626 inches (1.59 mm) for radiused groove bottoms
• Double-end insert geometry extends service intervals
• Clamp-type insert holding method for positive seating and repeatability

Compatibility

Designed for use in Top Notch series clamp-style toolholders that accept insert seat size 3 and are configured for NR-style grooving inserts. MSC manufacturer cross-reference number is NR3062R/L.

Installation Notes

Installation and indexing should be performed by a qualified machinist or toolroom technician with the machine powered off and spindle locked. Seat the insert fully into the toolholder pocket and confirm the clamp is torqued per the toolholder manufacturer specification before resuming operation. Inspect the insert seat and clamp for chips or debris before seating a new insert. Follow applicable shop safety procedures and machine guarding requirements during insert changes.