Sandvik Coromant 7860550 Turning Insert VNMG332-QM 4415

Product Description

The SANDVIK COROMANT 7860550 is a VNMG-style indexable turning insert in the T-Max P series, manufactured from solid carbide and CVD-coated with Al2O3, TiN, and TiCN layers. It carries a 4415 grade designation and is designed for external turning operations on CNC lathes and turning centers. The insert features a 35-degree diamond shape, a 3/8-inch inscribed circle, a 1/32-inch corner radius, and a neutral hand orientation. With four cutting edges and a QM chip breaker geometry, it is suited for stable metal removal in medium to semi-finish turning passes. Machinists and CNC operators install this insert in compatible VNMG toolholders.

This insert is intended for turning steel as its primary workpiece material and cast iron as a secondary workpiece material, aligning with ISO material group codes P and K respectively. It performs in typical production turning environments where consistent chip control and wear resistance across multiple cutting edges are required. The QM chip breaker geometry supports a range of depths of cut and feed rates in medium-duty turning applications on horizontal and slant-bed CNC lathes.

Key Features

• VNMG insert style with 35-degree diamond shape and neutral hand orientation
• CVD-applied Al2O3, TiN, and TiCN multilayer coating for wear and heat resistance
• QM chip breaker geometry for controlled chip formation in medium turning
• Four indexable cutting edges per insert
• 3/8-inch inscribed circle with 1/32-inch corner radius
• T-Max P series; ISO code VNMG 16 04 08-QM 4415

Compatibility

Designed as an OEM-style replacement insert for VNMG-style toolholders compatible with the T-Max P series. ISO industry standard number VNMG 16 04 08-QM 4415 can be used to cross-reference compatible clamping and screw-lock toolholder systems.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torx or hex key to secure the clamping screw or top clamp to the toolholder manufacturer's specified method. Inspect the toolholder seat and shim for wear or debris before seating the new insert to ensure proper contact and edge positioning.