Kennametal 4109652 Grooving Insert NFD3125K KCU25 Carbide

Product Description

The KENNAMETAL 4109652 is a solid carbide grooving insert in the Top Notch series, designed for precision external grooving and turning operations on CNC lathes and turning centers. It carries a KCU25 grade designation with a PVD-applied AlTiN coating that supports elevated cutting temperatures and extended tool life in steel and alloy applications. The insert features a left-hand orientation, a 3.18 mm cutting width, and a maximum depth of cut of 6.35 mm. A 12-degree rake angle and K-style chip breaker geometry promote controlled chip evacuation during interrupted and continuous grooving cuts. Machinists and tooling setup technicians install this insert into compatible Top Notch clamp-style toolholders.

This insert is suited for grooving operations in production turning environments, including general-purpose machining of steel, cast iron, and similar workpiece materials where a left-hand cutting geometry is required. The NFD insert style with a 55-degree included angle and a 0.19 mm corner radius (0.0075 inches) makes it appropriate for applications requiring a defined groove profile with controlled corner geometry. It is sold individually with a minimum order quantity of 5 units per transaction.

Key Features

• KCU25 solid carbide grade with PVD AlTiN coating for wear resistance and thermal stability
• 3.18 mm cutting width (0.1252 inches) for consistent groove sizing
• Maximum depth of cut 6.35 mm (0.2500 inches); effective range 5.00 to 10.00 mm
• Left-hand cutting orientation for specific toolholder configurations
• K-style chip breaker with 12-degree rake angle for controlled chip flow
• Clamp-style insert holding method compatible with Top Notch series toolholders

Compatibility

Designed for use with Top Notch series clamp-style grooving toolholders that accept the NFD3125K insert style. No additional compatible model numbers were specified in the available product data.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before seating or replacing any insert. Ensure the clamp and toolholder pocket are free of chips and debris before securing the insert to maintain proper seating and cutting edge registration. Do not exceed the maximum depth of cut specification for the insert style in use.