Kennametal 4109919 Grooving Insert NR3094 KCU25 Carbide

Product Description

The KENNAMETAL 4109919 is a solid carbide grooving insert designed for precision external grooving and turning operations on CNC lathes and turning centers. It carries the KCU25 manufacturer grade with a PVD-applied AlTiN coating, which provides elevated heat resistance and extended tool life in demanding cutting applications. The insert features a left-hand cutting orientation and a full-radius geometry with a 2.39 mm corner radius. With a cutting width of 4.78 mm and a maximum depth of cut of 3.81 mm, it suits medium-depth grooving passes in production turning environments. This insert is sized to the NR 3094 standard within Kennametal's Top Notch series and is held in position by a mechanical clamp in the toolholder.

This insert is intended for use on CNC turning centers and manual lathes equipped with compatible Top Notch series grooving toolholders. It is suited for grooving operations on ferrous and non-ferrous workpiece materials where a left-hand insert orientation is required. The AlTiN PVD coating makes it appropriate for dry or semi-dry cutting conditions at elevated surface speeds. Machinists and toolroom technicians in production shops and job shops are the primary installers and users of this consumable insert.

Key Features

• Solid carbide construction in KCU25 grade with PVD AlTiN coating for heat and wear resistance
• Left-hand cutting orientation with full-radius geometry and 2.39 mm corner radius
• 4.78 mm cutting width and up to 3.81 mm maximum depth of cut
• Compatible with mechanical clamp-style Top Notch series toolholders
• Included angle of 55 degrees suitable for V-groove and general-profile grooving
• Metric-dimensioned NR 3094 insert size for consistent toolholder indexing

Compatibility

Designed for use with mechanical clamp-style toolholders in the Kennametal Top Notch series that accept NR 3094 left-hand grooving inserts.

Installation Notes

Installation is performed by machinists or toolroom technicians. Power down and lock out the machine spindle before indexing or replacing any insert. Seat the insert fully into the toolholder pocket and tighten the clamp according to the toolholder manufacturer's specifications before resuming operation. Inspect the clamp and pocket for chips or debris that could prevent proper seating and affect cutting geometry.