Sandvik Coromant 5755959 Turning Insert VNMG331-PF

Product Description

The SANDVIK COROMANT 5755959 is a VNMG-style indexable turning insert from the T-Max P series, designed for external and internal turning operations on CNC lathes and turning centers. This insert features a PVD-applied TiCN and TiN dual-layer coating over a solid carbide substrate in manufacturer grade 1525, providing wear resistance and thermal stability suited to continuous and interrupted cuts. The 35-degree diamond (V) shape with a neutral hand orientation, a PF chip breaker geometry, and a 1/64-inch corner radius make it well matched to finishing and light roughing passes on steel and stainless steel workpieces.

This insert is intended for machining primary workpiece materials classified as steel (ISO P) and is also rated for secondary use on stainless steel (ISO M) and cast iron (ISO K). The PF chip breaker geometry promotes controlled chip evacuation at light-to-moderate depths of cut and feed rates, making this insert a common choice for finish turning passes where dimensional accuracy and surface finish are priorities. It seats via clamp and pin holding methods and is compatible with tool holders designed for VNMG 16 04 04 pocket geometry, per its ISO code VNMG 16 04 04-PF 1525. Qualified machinists and CNC operators install this insert in production and job-shop turning environments.

Key Features

• PVD TiCN and TiN dual-layer coating over a solid carbide substrate for extended wear life
• 35-degree diamond insert shape (V) with 4 indexable cutting edges per insert
• PF chip breaker geometry optimized for steel finishing and light roughing applications
• 1/64-inch (0.0156-inch) corner radius for tight-tolerance finishing cuts
• Neutral hand orientation for flexible toolpath programming
• Compatible with clamp and pin insert holding methods
• Part of the T-Max P series, a recognized platform for steel turning applications

Compatibility

Designed for use in VNMG 16 04 04 compatible tool holders with clamp or pin retention. Rated for primary use on steel (ISO P) and secondary use on stainless steel (ISO M) and cast iron (ISO K) workpiece materials. ISO designation: VNMG 16 04 04-PF 1525.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Disengage the machine spindle and confirm the turret is fully stopped before indexing or replacing inserts. Seat the insert firmly against the pocket locating surfaces and verify the clamp and pin are fully engaged before resuming cuts. Inspect the insert pocket for wear or debris before seating a new edge to maintain correct insert position and tool geometry.