Kennametal 4109770 Grooving Insert NG3062 KCU25 Carbide Altin

Product Description

The KENNAMETAL 4109770 is a solid carbide grooving insert in the Top Notch series, designed for precision external and face grooving operations on CNC lathes and turning centers. Manufactured to the NG insert style in size 3062, it features a KCU25 grade substrate with a PVD-applied AlTiN coating for extended tool life in tough turning applications. The left-hand cutting geometry delivers a 0.0622-inch cutting width and a maximum depth of cut of 0.0941 inches, making it well suited for narrow groove profiles requiring tight dimensional control. Licensed machinists and CNC lathe operators working in production or job-shop environments are the primary users of this insert.

This insert is used in turning applications where repeatable groove width and depth accuracy are critical. The Top Notch series is a well-established grooving platform used on compatible Top Notch toolholders in both manual and automated CNC turning setups. Typical applications include grooving steel, stainless steel, and similar ferrous alloys in moderate to difficult cutting conditions where the AlTiN coating provides thermal resistance and wear protection. The left-hand designation specifies the cutting direction and must match the corresponding toolholder orientation.

Key Features

• Solid carbide substrate with KCU25 manufacturer grade for strength and wear resistance
• PVD AlTiN coating for elevated thermal hardness and extended tool life in ferrous cutting
• 0.0622-inch cutting width for narrow, precise groove profiles
• Maximum depth of cut range of 0.0750 to 0.1000 inches
• Left-hand cutting geometry with neutral rake angle and 0-degree lead angle
• 0.0075-inch corner radius for controlled groove floor finish
• Top Notch series platform for secure, repeatable insert seating

Compatibility

Designed for use with Top Notch series grooving toolholders that accept NG-style inserts in size 3062 with left-hand orientation. MSC/Manufacturer cross-reference number is NG3062R/L.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the turret is in a safe indexed position before changing inserts. Seat the insert firmly against the toolholder pocket using the appropriate clamping screw torque per the toolholder manufacturer specifications. Verify insert hand orientation matches the programmed cutting direction before resuming operation.