Walter 7376612 VNMG332-MM5 WMP20S Turning Insert

Product Description

The WALTER 7376612 is a solid carbide turning insert in the VNMG-MM5 series, designed for precision metal cutting on CNC lathes and turning centers. It carries the industry-standard designation VNMG332-MM5 WMP20S and features a triple-layer CVD coating of TiCN, Al2O3, and TiCN under the proprietary WMP20S grade. The insert has a 35-degree diamond shape, a neutral hand orientation, and a chamfered and honed cutting edge style. With four available cutting edges and the MM5 chip breaker geometry, it delivers controlled chip formation across a range of turning operations. Licensed machinists and CNC operators install this insert in standard VNMG-compatible toolholders.

This insert is suited for turning, facing, boring, and back turning operations. Primary workpiece materials are steel (ISO P25) and stainless steel (ISO M20). It also performs on super-alloys and titanium (ISO S20) as a secondary material category. The MM5 chip breaker geometry supports medium-depth finishing and semi-finishing passes. The negative rake angle and N clearance code make it compatible with rigid, secure clamping setups in production environments where consistent surface finish and insert life are priorities.

Key Features

• Triple-layer CVD coating: TiCN / Al2O3 / TiCN under WMP20S proprietary grade for wear and heat resistance
• MM5 chip breaker geometry for controlled chip evacuation in steel and stainless steel applications
• Four cutting edges per insert for extended tool life and lower cost per edge
• Chamfered and honed cutting edge style reduces micro-chipping at entry and exit
• Neutral hand orientation fits both left-hand and right-hand VNMG toolholders
• Clamp and pin insert holding method for secure seating under interrupted and continuous cuts

Compatibility

Designed for use in standard VNMG-style toolholders that accept a 3/8-inch inscribed circle, 3/16-inch thick, 35-degree diamond insert with clamp and pin holding. ISO designation VNMG160408-MM5 WMP20S. Conforms to ANSI and ISO standards for VNMG insert geometry.

Installation Notes

Installation is performed by CNC machinists or toolroom technicians. Power down and lock out the machine spindle before seating or indexing the insert. Ensure the toolholder pocket and clamping pin are free of chips and debris before securing the insert to prevent seating errors. Follow the toolholder manufacturer's clamping torque specifications and verify insert seating before resuming cutting operations.