Kennametal 4109834 Grooving Insert NG3189 KCU25 Altin

Product Description

The KENNAMETAL 4109834 is a solid carbide grooving insert in the Top Notch series, designed for external grooving and parting operations on CNC lathes and turning centers. It carries a KCU25 manufacturer grade with a PVD-applied AlTiN coating, delivering heat and wear resistance suited to interrupted cuts and general-purpose turning of steel and cast materials. The insert is left-hand orientation with a 4.80 mm cutting width and a maximum depth of cut of 3.81 mm. Machinists and toolroom technicians install this insert into compatible Top Notch clamp-style toolholders as a direct replacement unit.

This insert is intended for metal-cutting applications in production and job-shop environments. Its 55-degree included angle and 0.57 mm corner radius make it well suited to grooving operations where profile accuracy and surface finish are priorities. The AlTiN PVD coating supports higher cutting speeds and extends tool life in dry or minimal-lubrication machining conditions. It is sized for metric tooling setups, with an insert size designation of 3189 and a cutting height of 8.74 mm.

Key Features

• Solid carbide construction with PVD AlTiN coating for extended wear resistance
• 4.80 mm cutting width with a maximum depth of cut range of 3.00 to 4.00 mm
• Left-hand insert orientation for compatible Top Notch series toolholders
• 0.57 mm corner radius for controlled profile grooving
• 55-degree included angle geometry, no full radius
• Clamp-style insert holding method for secure, repeatable seating

Compatibility

Designed for use with Top Notch series clamp-style toolholders that accept NG-style grooving inserts. MSC and manufacturer cross-reference number is NG3189R/L.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully in the toolholder pocket and secure the clamp to the toolholder manufacturer's specified procedure before resuming cuts. Inspect the insert seat and clamp for wear or debris before each installation to ensure accurate positioning.