Mitsubishi 189958 Milling Insert QOMT0934R-M2 VP15TF

Product Description

The MITSUBISHI 189958 is a solid carbide milling insert carrying ANSI and ISO designation QOMT0934R-M2 with a VP15TF manufacturer grade. It is engineered for high-performance milling operations where tool life and edge stability are critical. The insert features a Physical Vapor Deposition (PVD) AlTiN coating that resists heat and abrasion at elevated cutting speeds. With a positive rake geometry and a right-hand cutting orientation, the 189958 promotes efficient chip evacuation and reduced cutting forces. It is sized at insert code 0934, with a cutting edge effective length of 0.358 inches and a thickness of 0.134 inches. Licensed machinists and tooling specialists install this insert on compatible milling toolholders secured by screw clamping.

This insert is suited for milling applications across a range of workpiece materials, including cast iron, stainless steel, and steel as primary targets, and hard materials, superalloys, and titanium as secondary applications. It performs in both roughing and semi-finishing passes where the M2 chip breaker geometry helps manage chip flow across varying feeds and depths of cut. Typical use environments include precision machining shops, production milling cells, and maintenance machining operations requiring a reliable indexable carbide insert.

Key Features

• VP15TF grade solid carbide construction with PVD AlTiN coating for extended tool life
• M2 chip breaker geometry supports controlled chip flow across multiple material types
• Positive rake design reduces cutting forces and heat generation at the edge
• Right-hand cutting orientation with screw-in insert holding method for secure seating
• Effective cutting edge length of 0.358 inches and 1/32-inch corner radius for accurate profiling
• ISO-standardized QOMT0934R-M2 designation for straightforward cross-referencing

Compatibility

Designed as a direct-fit replacement for QOMT-series milling toolholders accepting QOMT0934R-M2 inserts per ISO standards. Compatible primary workpiece materials include cast iron, stainless steel, and steel; secondary materials include hard materials, superalloys, and titanium.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Always power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torx or hex key specified by the toolholder manufacturer when tightening the clamping screw to avoid insert cracking or improper seating. Inspect the insert pocket and seating surface for debris or wear before fitting a new insert.