Sandvik Coromant 5755605 Turning Insert VBMT221-MF 2025

Product Description

The SANDVIK COROMANT 5755605 is a VBMT221-MF 2025 grade solid carbide turning insert designed for precision finishing operations on stainless steel and other ISO M-group workpiece materials. This insert features a 35-degree diamond (rhombic) shape with a positive side clearance and a neutral hand orientation. The multilayer CVD coating stack — TiCN, Al2O3, and TiN — delivers high wear resistance balanced with toughness, making it well suited for interrupted cuts and demanding stainless steel profiles. The MF chip breaker geometry is engineered specifically for finishing passes, producing controlled chip flow at light depths of cut and fine feed rates. Cutting edge count is 2 per insert.

This insert is intended for use in CoroTurn 107 toolholders and compatible screw-clamp boring bars and external turning tools. Its primary application is finish turning of stainless steel components in CNC lathe and turning center operations, both in job shop and production environments. The VBMT221 size code and ISO designation VBMT 11 03 04-MF 2025 allow direct cross-reference into toolholder catalogs for proper seat and clamping confirmation. Typical users include CNC machinists and toolroom technicians working with austenitic and duplex stainless grades where surface finish and dimensional control are critical.

Key Features

• 35-degree diamond (V-shape) insert geometry with positive side clearance for low cutting forces on finishing passes
• CVD multilayer coating: TiCN, Al2O3, and TiN — optimized for stainless steel wear resistance and toughness
• MF chip breaker geometry designed for finishing operations with controlled chip evacuation
• 1/64-inch corner radius (0.0156 inches) for fine surface finish requirements
• Screw-clamp insert holding method provides secure seating and repeatable edge indexing
• 2 usable cutting edges per insert

Compatibility

Designed for use in CoroTurn 107 series screw-clamp toolholders accepting VBMT 11 03 04 inserts. Verify toolholder pocket designation matches the VBMT insert style and B clearance code before installation. ISO insert code VBMT 11 03 04-MF 2025 and ANSI insert code VBMT221 may be used for direct toolholder catalog cross-reference.

Installation Notes

Insert replacement and indexing should be performed by a qualified CNC machinist or toolroom technician with the machine in a locked-out, zero-energy state per applicable machine-specific lockout-tagout procedures. Use the correct Torx or hex key as specified by the toolholder manufacturer when tightening the clamping screw — do not overtighten, as this can fracture the insert seat or the insert body. Inspect the insert pocket and clamping screw for wear or damage before seating a new insert. Handle carbide inserts carefully; chipping can occur from contact with hard surfaces.