Kennametal 6442338 Carbide Cutoff Insert 3mm Rh

Product Description

The KENNAMETAL 6442338 is a solid carbide cutoff insert designed for parting and grooving operations on CNC lathes and turning centers. Part of the Beyond Evolution series, this insert carries the KCU25 manufacturer grade and features an Al2O3 PVD coating for improved wear resistance and thermal stability. The insert style is EC with a 3mm cutting width, a 12-degree right-hand lead angle, and a 2-degree relief angle. The CF chipbreaker geometry promotes chip control during cutoff passes. Machining professionals and toolroom technicians working with steel and similar workpiece materials install this insert as a direct replacement unit in compatible cutoff toolholders.

This insert is suited for production turning environments where consistent parting performance is required. The right-hand insert orientation and right-hand lead angle direct cutting forces appropriately for standard lathe spindle rotation. The Beyond Evolution series targets demanding cutoff applications where edge stability and coating adhesion are priorities. The EC insert style fits corresponding EC-series toolholders and insert seats sized for a 3mm blade width. This insert ships individually but carries a minimum order quantity of 5 units.

Key Features

• Solid carbide substrate with KCU25 grade designation for toughness and wear resistance
• Al2O3 PVD coating provides thermal barrier and extended edge life
• 3mm cutting width with CF chipbreaker for controlled chip evacuation during parting
• 12-degree right-hand lead angle reduces radial cutting forces at parting depth
• 2-degree relief angle minimizes flank contact with the workpiece
• Beyond Evolution series construction for high-demand production cutoff applications

Compatibility

Designed as an OEM-style replacement insert for EC-style cutoff and grooving toolholders accepting a 3mm insert seat size in the Beyond Evolution series. Verify toolholder insert seat code and blade width before installation.

Installation Notes

Insert replacement should be performed by a qualified machinist or toolroom technician with the machine powered down and locked out per facility LOTO procedures. Use the appropriate torx or hex key as specified by the toolholder manufacturer to seat and clamp the insert securely. Do not over-torque the clamping screw, as carbide inserts are brittle and can fracture under excessive clamping force. Inspect the insert pocket for chips or debris before seating the new insert.