Kennametal 3757624 WNMG433UN KCK20 Turning Insert

Product Description

The KENNAMETAL 3757624 is a WNMG433UN-style solid carbide turning insert in the KCK20 grade, designed for external and internal material removal on CNC and manual lathes. It features a multilayer PVD coating combining AlTiN and AlCrN layers for heat and wear resistance during interrupted and continuous cuts. The insert carries a negative rake angle, a neutral hand, and a chamfered and honed cutting edge with a 3/64-inch corner radius. With 6 available cutting edges and compatibility with KENLOC-style clamp and pin toolholders, it delivers a consistent cost-per-edge value on production turning applications.

This insert is suited for turning, facing, and boring operations on steel and cast iron workpieces, corresponding to ISO material groups P and K. It performs in both light finishing and moderate roughing scenarios where a maximum depth of cut of 0.050 inches is appropriate. The KENLOC series toolholder system is the intended mounting platform, and the insert is sized to the 433 insert size code with a 1/2-inch inscribed circle. Machinists and CNC operators in job shops, production facilities, and maintenance machining environments are the primary users.

Key Features

• Multilayer PVD coating (AlTiN and AlCrN) for elevated heat resistance and extended tool life on ferrous materials
• 6 cutting edges per insert for reduced cost per edge on high-volume turning
• Chamfered and honed cutting edge style reduces chipping risk on interrupted cuts
• Neutral hand orientation fits left-hand, right-hand, and straight toolholder setups
• Clamp and pin holding method provides secure seating in KENLOC-style toolholders
• Meets ANSI and ISO insert geometry standards for broad toolholder compatibility

Compatibility

Designed for use with KENLOC-series clamp and pin toolholders accepting WNMG433 insert geometry. Intended for primary workpiece materials of steel (ISO P) and cast iron (ISO K). Material grades K10 and K25 are applicable.

Installation Notes

Insert indexing and replacement should be performed with the machine in a full stop and all spindle motion confirmed ceased. Use the appropriate KENLOC torx or clamp screw driver as specified by the toolholder manufacturer to avoid seat damage. Verify the insert pocket and seating surface are free of chips and debris before seating the insert. Dispose of worn inserts per applicable facility waste procedures for carbide tooling.