Sandvik Coromant 5749361 Turning Insert SCMT32.51-MM 2025

Product Description

The SANDVIK COROMANT 5749361 is a solid carbide turning insert designed for precision external and internal turning operations. It carries the SCMT32.51-MM 2025 designation and belongs to the CoroTurn 107 series. The insert features a CVD-applied multilayer coating of TiCN, AI2O3, and TiN, which provides wear resistance and thermal stability during continuous and interrupted cuts. With a 90-degree square shape, a 3/8-inch inscribed circle, and a 1/64-inch corner radius, this insert delivers consistent results on stainless steel and similar difficult-to-machine materials. It is installed by licensed machinists and CNC operators in production and job-shop environments.

This insert is suited for turning applications where stainless steel is the primary workpiece material, designated by ISO workpiece material code M. The MM chip breaker geometry is engineered to manage chip control in medium machining conditions. The neutral hand orientation allows flexible application across standard SCMT-style toolholders. It is commonly used on CNC lathes and turning centers in both production and maintenance machining settings where dimensional accuracy and surface finish are critical requirements.

Key Features

• CVD-coated with TiCN, AI2O3, and TiN layers for thermal and abrasion resistance
• MM chip breaker geometry for controlled chip formation in medium turning
• 90-degree square insert shape with 4 cutting edges for extended tool life
• 1/64-inch (0.0156-inch) corner radius for finish and semi-finish turning
• Screw-held mounting method for secure and repeatable indexing
• Optimized for stainless steel (ISO material code M) primary workpiece applications

Compatibility

Designed as an OEM-style replacement insert for SCMT-style toolholders within the CoroTurn 107 series. ISO designation SCMT 09 T3 04-MM 2025. Compatible with standard screw-clamp toolholders accepting SCMT square inserts with a 0.1732-inch hole diameter.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torx or hex key to secure the clamping screw to the toolholder specification — do not overtighten. Inspect the insert seat and clamp for wear or debris before seating a new insert to ensure proper contact and accurate tool-nose positioning.