Sandvik Coromant 5755954 Turning Insert VCMT221MM 2025

Product Description

The SANDVIK COROMANT 5755954 is a VCMT-style indexable turning insert designed for precision external turning operations. Part of the CoroTurn 107 series, it is manufactured from solid carbide and coated with a multilayer TiCN, Al2O3, and TiN stack to extend tool life and resist wear in demanding cutting conditions. The insert features a 35-degree diamond shape, a neutral hand orientation, and a 0.40 mm (1/64 inch) corner radius. With an inscribed circle of 0.2500 inches (1/4 inch) and an insert length of 11.70 mm, this insert is sized for medium turning work. It is held via screw clamping and intended for use by CNC machinists and toolroom professionals.

This insert is rated for primary use on stainless steel workpiece materials, corresponding to ISO material code M. It fits CoroTurn 107 toolholders that accept VCMT 11 03 04 geometry inserts. The MM chip breaker geometry is engineered for stable chip control and consistent surface finish on stainless and similar difficult-to-machine alloys. Typical applications include external turning, facing, and light profiling on CNC lathes in production and job-shop environments.

Key Features

• Multilayer TiCN, Al2O3, and TiN coating for extended wear resistance on stainless steel
• 35-degree diamond insert shape (shape code V) for tight-clearance and profiling capability
• MM chip breaker geometry optimized for stainless steel chip control
• Screw-lock insert holding method for secure, repeatable seating in CoroTurn 107 toolholders
• Two usable cutting edges per insert
• 0.40 mm corner radius suits medium finishing and semi-finishing passes

Compatibility

Designed for use with CoroTurn 107 series toolholders accepting VCMT 11 03 04 insert geometry. ISO code: VCMT 11 03 04-MM 2025. Primary workpiece material: stainless steel (ISO material code M).

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Before changing inserts, ensure the machine spindle is stopped and all axes are locked or parked in a safe position. Use the manufacturer-specified torque wrench and insert screw to seat the insert fully against the pocket walls and base seat — do not overtighten or use impact tools on the clamping screw. Inspect the insert pocket and screw threads for chips or damage before indexing to a fresh cutting edge.