Kennametal 4109793 Grooving Insert KCU25 Altin Left Hand

Product Description

The KENNAMETAL 4109793 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 the KCU25 manufacturer grade with a PVD-applied AlTiN coating for extended tool life in demanding materials. The insert features a 3.00 mm cutting width and a maximum depth of cut of 3.81 mm, making it well suited for precision groove profiles in medium to finish-cut applications. A left-hand orientation and NG insert style position this insert for use with compatible Top Notch clamp-style toolholders. Installation and use are typically performed by skilled machinists and CNC turning technicians.

This insert is intended for grooving applications where consistent groove width and depth control are required. The KCU25 grade with AlTiN coating performs well in steel, alloy steel, and other materials where heat resistance and edge durability are priorities. The K-style chip breaker aids in chip control during interrupted or continuous groove cuts. This is a left-hand insert, meaning it is configured for right-to-left feed direction. The Top Notch series uses a mechanical clamp holding method for secure seating in the toolholder pocket.

Key Features

• KCU25 solid carbide grade with PVD AlTiN coating for heat and wear resistance
• 3.00 mm cutting width with a maximum depth of cut of 3.81 mm
• Left-hand insert orientation for right-to-left feed direction
• K-style chip breaker for controlled chip formation
• Clamp-style insert holding method compatible with Top Notch series toolholders
• Corner radius of 0.19 mm for defined groove edge geometry

Compatibility

Designed for use with Top Notch series clamp-style grooving toolholders that accept NG insert style with a size 4 insert seat. Compatible insert seat size is 4, and the MSC/Manufacturer cross-reference number is NG4M300R/LK.

Installation Notes

This insert is installed and replaced by qualified machinists or CNC turning technicians. Before changing inserts, ensure the machine is powered down, the spindle is stopped, and all motion has ceased. Use appropriate insert removal tools to avoid contact with cutting edges. Verify correct insert hand orientation and chip breaker selection before resuming cuts, and confirm the insert is fully seated and the clamp is secured before operation.