Kennametal 4109771 Grooving Insert KCU25 Solid Carbide Altin

Product Description

The KENNAMETAL 4109771 is a solid carbide grooving insert in the Top Notch series, designed for external grooving and turning operations on CNC lathes and turning centers. It carries the KCU25 manufacturer grade with a PVD-applied AlTiN coating, offering strong wear resistance and thermal stability in demanding cutting environments. The left-hand insert geometry features a 1.58 mm cutting width and a maximum depth of cut of 2.39 mm, with a 0.19 mm corner radius and a K-style chip breaker. This insert is specified for metric-measurement tooling setups and is installed by machinists and CNC turning specialists working with ferrous and hardened workpiece materials.

The 4109771 fits into Top Notch series clamp-style toolholders and is suited for grooving applications in production turning environments, including light to medium interrupted cuts on steel and alloy workpieces. The included angle of 55 degrees and NG insert style make it appropriate for profile grooving and face grooving where left-hand orientation is required. Typical applications include component grooving on Swiss-type, gang-tool, and turret-style turning machines in job shop and production settings.

Key Features

• Solid carbide construction with PVD AlTiN coating for extended tool life in abrasive and high-heat cutting conditions
• 1.58 mm cutting width with maximum depth of cut range of 2.00 to 3.00 mm
• K-style chip breaker geometry promotes controlled chip evacuation during grooving operations
• Left-hand insert orientation for specific toolholder and application requirements
• 0.19 mm corner radius provides a defined edge form without a full radius profile
• Clamp-type insert holding method compatible with Top Notch series toolholders

Compatibility

Designed for use with Top Notch series clamp-style grooving toolholders that accept the NG insert style in size 3062. The MSC and manufacturer cross-reference number for this insert is NG3062R/LK. Confirm toolholder compatibility with the insert size, hand orientation, and chip breaker designation before installation.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist with the machine powered off and the spindle locked. Use the appropriate torque wrench and clamping screw specified by the toolholder manufacturer when seating the insert. Inspect the insert pocket and clamping screw for wear or debris before each installation. Do not exceed the rated maximum depth of cut for this insert grade and geometry.