Sandvik Coromant 5752789 Turning Insert Tcmt Coroturn 107

Product Description

The SANDVIK COROMANT 5752789 is a triangular carbide turning insert in the CoroTurn 107 series, designed for precision external turning operations on stainless steel and other demanding workpiece materials. It carries the ISO designation TCMT 16 T3 08-MM 2025 and features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN under manufacturer grade 2025. The insert measures 0.618 inches in length with a 3/8-inch inscribed circle and a 1/32-inch corner radius. The MM chip breaker geometry promotes efficient chip control during medium turning passes. This insert is installed by machinists and CNC operators in production and job-shop turning environments.

The 5752789 is suited for turning stainless steel (ISO material group M) in both light and medium-duty applications where consistent surface finish and edge life are required. The neutral hand orientation and screw-holding method make it compatible with standard TCMT-style toolholders used on CNC lathes and manual turning centers. The CoroTurn 107 series is widely applied in precision component manufacturing, including aerospace, medical, and general industrial machining where stainless steel is a primary material.

Key Features

• CVD-coated with TiCN, Al2O3, and TiN layers for wear resistance and thermal protection
• MM chip breaker geometry for reliable chip control in medium turning
• Triangular insert shape with 60-degree included angle and 3 cutting edges per insert
• 1/32-inch (0.0313 inch) corner radius for moderate nose strength and surface finish
• 7-degree relief angle (clearance code C) reduces flank wear on stainless steel
• Screw-holding method ensures secure, repeatable clamping in TCMT-style pockets

Compatibility

Designed for use in TCMT-style toolholders compatible with the CoroTurn 107 series. Suitable for external turning of stainless steel workpieces (ISO material code M). ISO designation TCMT 16 T3 08-MM 2025 can be used to cross-reference compatible toolholder pocket specifications.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Before indexing or replacing the insert, power down the machine spindle and engage the machine lock or E-stop per standard shop safety practice. Use the appropriate Torx or hex key to seat the clamping screw to the toolholder manufacturer's specified torque - do not over-tighten, as this can fracture the carbide substrate. Inspect the toolholder pocket and seating surfaces for chips or debris before installing a new insert to ensure proper seating and edge repeatability.