Sandvik Coromant 5755215 Turning Insert TPMT32.51-MF 1125

Product Description

The SANDVIK COROMANT 5755215 is a solid carbide turning insert in the TPMT style, designed for precision external turning operations on CNC and manual lathes. Part of the CoroTurn 111 series, this insert carries a dual-layer TiAlN and AlCr2O3 coating applied via PVD process, providing thermal resistance and edge hardness for demanding cuts. The triangular insert geometry delivers three usable cutting edges, and the MF chip breaker is engineered for light to medium finishing passes. It is held in place by a screw-lock system and suits neutral-hand toolholders. Machinists and tooling technicians working in production or job-shop environments will specify this insert for finishing applications.

This insert is rated primarily for steel (ISO material code P) and is also suitable for stainless steel, superalloys, and titanium (ISO codes M, S). The TPMT geometry with an 11-degree relief angle and a 0.0156-inch corner radius makes it well matched to finishing passes where surface finish and dimensional accuracy are priorities. The MF chip breaker geometry promotes chip control at lighter depths of cut and feed rates typical in finishing operations. Licensed machinists and CNC setup technicians are the primary installers in both production and maintenance-repair-operations environments.

Key Features

• Solid carbide substrate with PVD-applied TiAlN and AlCr2O3 dual-layer coating for extended edge life
• MF chip breaker geometry optimized for finishing cuts on steel and stainless steel
• Three usable cutting edges per insert on a 60-degree triangular shape
• 11-degree relief angle (clearance code P) supports clean cutting action on external turning
• Screw-lock insert holding method for repeatable, rigid seating in compatible toolholders
• Neutral hand orientation compatible with standard TPMT-style toolholder pockets

Compatibility

Designed for use in TPMT-style screw-lock toolholders compatible with the CoroTurn 111 series. ISO designation TPMT 16 T3 04-MF 1125. Suitable for turning steel, stainless steel, superalloys, and titanium workpieces.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Before changing inserts, ensure the machine spindle is fully stopped and the control is in an idle or locked state. Use the correct torx or hex key to remove and re-seat the screw-lock fastener without over-torquing the clamp screw. Inspect the toolholder pocket and seating surface for debris or wear before indexing to a fresh cutting edge.