Sandvik Coromant 5730978 Turning Insert Dcmt 1115

Product Description

The SANDVIK COROMANT 5730978 is a solid carbide turning insert in the DCMT style, part of the CoroTurn 107 series. It features a TiAlN and AlCr2O3 coating applied via PVD process, delivering thermal resistance and wear performance for demanding cutting applications. The insert carries a 55-degree diamond shape with a 7-degree relief angle, a 3/8-inch inscribed circle, and a 1/64-inch corner radius. Holding method is screw-style. This insert is designed for CNC turning operations and is installed by machinists and tooling specialists working on lathes and turning centers.

This insert is suited for turning operations on stainless steel as its primary workpiece material, with secondary applications in superalloys and titanium. The UM chip breaker geometry is optimized for these difficult-to-machine materials where controlled chip formation and edge security are critical. It is a neutral-hand insert applicable to standard external and internal turning setups in both production and job-shop environments. The ISO designation is DCMT 11 T3 04-UM 1115.

Key Features

• TiAlN and AlCr2O3 PVD coating for high heat and wear resistance in stainless and superalloy cutting
• 55-degree diamond insert shape with 7-degree relief angle for positive cutting geometry
• UM chip breaker geometry engineered for controlled chip evacuation in tough materials
• 3/8-inch inscribed circle with 1/64-inch corner radius for precise finishing and semi-finishing passes
• Screw-type insert holding method for secure clamping on compatible toolholders
• Neutral hand orientation for versatile use in multiple turning setups

Compatibility

Designed for use in DCMT-style screw-clamped toolholders compatible with the CoroTurn 107 series. Suitable for external turning applications on stainless steel, superalloys, and titanium workpieces. Verify toolholder pocket specifications match DCMT insert geometry before installation.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before seating or replacing inserts. Use the appropriate torx or hex key to torque the clamping screw to the toolholder manufacturer specification — do not overtighten, as this can fracture the carbide insert. Inspect the toolholder pocket for wear or debris before seating a new insert.