Sandvik Coromant 5755659 Turning Insert VBMT331-MF 2025

Product Description

The SANDVIK COROMANT 5755659 is a solid carbide turning insert in the VBMT style, designed for precision external turning operations on CNC lathes and turning centers. Manufactured to ISO code VBMT 16 04 04-MF 2025, this insert features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, optimizing edge wear resistance and thermal protection. The 35-degree diamond shape provides a sharp, free-cutting geometry with a 1/64-inch corner radius. It carries a neutral hand orientation, making it compatible with standard VBMT toolholders. This insert is specified and installed by machinists and CNC tooling professionals in production and job-shop environments.

This insert is part of the CoroTurn 107 series and is optimized for turning stainless steel workpieces, classified under primary workpiece material code M. The MF chip breaker geometry is engineered for medium to light finishing cuts, promoting controlled chip formation and surface finish quality on difficult-to-machine materials. It is appropriate for use in both high-volume production and precision finishing applications where consistent edge life and dimensional accuracy are required. The screw-clamping insert holding method ensures secure seating in compatible VBMT-style toolholders.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for wear resistance and heat management
• 35-degree diamond insert shape with MF chip breaker for light to medium finishing cuts
• Neutral hand orientation compatible with standard VBMT screw-clamp toolholders
• 1/64-inch (0.0156-inch) corner radius for precise finishing on stainless steel
• 2 cutting edges per insert for extended usable tool life
• CoroTurn 107 series ISO designation VBMT 16 04 04-MF 2025 for straightforward cross-reference

Compatibility

Designed for use in VBMT-style screw-clamp toolholders compatible with the CoroTurn 107 series. This insert is intended for external turning applications on stainless steel workpieces and fits holders accepting the VBMT 331 insert size code with a 0.1732-inch (4.40 mm) center hole diameter.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians following standard insert indexing procedures. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torx or hex key to seat the clamping screw to the toolholder manufacturer specification. Inspect the insert pocket and clamping components for wear or debris before seating a new insert to ensure proper edge registration and cutting geometry.