Kennametal 4033887 Grooving Insert NV3 KCU25 Carbide Altin

Product Description

The KENNAMETAL 4033887 is a solid carbide grooving insert designed for external grooving and turning operations on CNC lathes and turning centers. Built to the Top Notch series standard, this right-hand insert carries a PVD-applied AlTiN coating over a KCU25 carbide grade substrate, delivering strong wear resistance and thermal stability at elevated cutting speeds. The insert features a 0.1252-inch cutting width and a maximum depth of cut of 0.087 inches, making it well suited for precision grooving work where dimensional control and finish quality are critical. Machinists and toolroom technicians install this insert into compatible Top Notch series clamp-style toolholders.

This insert is appropriate for grooving applications in both production and job-shop environments running ferrous and non-ferrous materials. The NV3 insert style with a 20-degree lead angle and a 40-degree included angle supports stable, controlled cuts. The maximum depth of cut range runs from 0.075 to 0.100 inches, which fits common shallow-groove and undercut profiles encountered in shaft, sleeve, and component machining on manual or CNC turning equipment.

Key Features

• Solid carbide construction with PVD AlTiN coating for extended tool life in high-speed grooving
• KCU25 manufacturer grade carbide, material grade C2/C6, suitable for a broad range of workpiece materials
• 0.1252-inch cutting width with matching 0.1252-inch corner radius for consistent groove geometry
• Maximum depth of cut 0.087 inches; operating range 0.075 to 0.100 inches
• Right-hand orientation; clamp insert holding method for secure, repeatable seating
• Top Notch series NV3 style with 20-degree lead angle and 40-degree included angle

Compatibility

Designed for use with Top Notch series clamp-style toolholders that accept the NV3 insert style. Verify toolholder compatibility with insert size 3 and clamp holding method before installation.

Installation Notes

Grooving inserts of this type are installed and changed by machining technicians following standard indexable tooling procedures. Power down and lock out the machine spindle before seating or removing the insert. Use the appropriate torx or hex key to torque the clamp screw to the toolholder manufacturer specification. Inspect the insert pocket and clamp for chips or damage before each installation to ensure proper seating and prevent premature insert failure.