Kennametal 3757619 VNMG332UN Turning Insert KCK20 Carbide

Product Description

The KENNAMETAL 3757619 is a solid carbide turning insert in the VNMG332UN geometry, designed for high-wear-resistance machining of steel and cast iron. Coated with a multilayer AlTiN and AlCrN PVD coating under the KCK20 grade designation, this insert delivers consistent performance in roughing and medium machining operations. The 35-degree diamond (rhombic) shape with a neutral hand and negative rake angle provides strong edge support during interrupted and continuous cuts. With 4 usable cutting edges and a 0.0313-inch corner radius, it offers a favorable cost-per-edge ratio for production turning environments. It is part of the KENLOC series.

This insert is suited for external turning, facing, boring, back turning, and back boring on steel (P) and cast iron (K) workpiece materials. The UN chip breaker geometry is optimized for roughing to medium machining depths, handling a maximum depth of cut of 0.0492 inches (1.25 mm). It is compatible with KENLOC-style toolholders that accept VNMG-format inserts held by clamp or pin methods. Typical applications include production CNC lathes in job shops, manufacturing cells, and maintenance environments where steel and cast iron components are turned regularly.

Key Features

• KCK20 grade with multilayer AlTiN and AlCrN PVD coating for high wear resistance on steel and cast iron
• VNMG332UN geometry: 35-degree diamond shape, neutral hand, negative rake and side clearance
• UN chip breaker optimized for roughing and medium machining operations
• 4 cutting edges per insert for extended tool life and lower per-edge cost
• Maximum depth of cut: 0.0492 inches (1.25 mm)
• Chamfered and honed cutting edge style for edge stability and reduced chipping

Compatibility

Designed for use with KENLOC-series toolholders accepting VNMG-format inserts secured by clamp or pin holding methods. Conforms to ANSI insert code VNMG332 and ISO insert code VNMG160408.

Installation Notes

Installation is performed by qualified CNC machinists or tooling technicians. Power down and de-energize the machine before seating or indexing inserts. Use the appropriate torque wrench for the clamping screw to avoid insert rocking or seat damage. Inspect the insert pocket and seating surfaces for chips or debris before each insert change to ensure proper contact and edge registration.