Kennametal 4111110 Cutoff Insert KCU25 Carbide 4mm

Product Description

The KENNAMETAL 4111110 is a carbide cutoff insert designed for parting and grooving operations on CNC lathes and turning centers. Manufactured to Series A2 geometry with an A2040N00CR02 insert style designation, it features a 4.00 mm (0.1570 inch) cutting width, a neutral lead angle, and a 2-degree relief angle. The corner radius measures 0.0080 inch, contributing to controlled chip flow and edge stability during cut-off passes. The insert carries a KCU25 manufacturer grade with an AlTiN coating, which provides thermal resistance and extended tool life in moderate to demanding turning applications. Machinists and tool room technicians are the primary installers.

This insert is suited for cut-off and parting applications on ferrous and non-ferrous workpieces where a 4 mm wide groove or full parting cut is required. The neutral lead angle geometry makes it appropriate for straight plunge cut-off operations. The KCU25 grade with AlTiN coating is rated for material grades C2 and C6, covering a range of steels and cast irons in both light and moderate interrupted cutting conditions. It is intended for use in standard A2-series insert holders designed to accept this insert style and size code.

Key Features

• 4.00 mm (0.1570 inch) cutting width for precise parting and grooving cuts
• KCU25 carbide grade with AlTiN coating for thermal resistance and wear reduction
• Neutral lead angle and 0-degree lead for straight plunge cut-off geometry
• 2-degree relief angle with CR chipbreaker for controlled chip evacuation
• 0.0080 inch corner radius for edge stability and consistent groove finish
• Rated for C2 and C6 material grades covering steels and cast irons

Compatibility

Designed for use with A2-series cutoff and grooving insert holders that accept the A2040N00CR02 insert style and size code 4 designation.

Installation Notes

Insert seating and clamping should be performed by a qualified machinist following the toolholder manufacturer's torque and clamping specifications. Always disengage the machine spindle and confirm the machine is in a safe, powered-down state before changing inserts. Inspect the insert pocket and clamping screw for wear or damage before seating a new insert. Do not exceed the toolholder's rated feed and depth-of-cut limits for this insert style.