Sandvik Coromant 5756203 Turning Insert WNGA431S0330A 7015 Cbn

Product Description

The SANDVIK COROMANT 5756203 is a cubic boron nitride (CBN) turning insert designed for high-performance machining of hardened ferrous materials. Manufactured to WNGA insert style with an 80-degree trigon shape, this insert carries a titanium nitride (TiN) PVD coating and features an ER-treated, negative-land cutting edge style with a chip breaker designation of A. The inscribed circle measures 0.5 inches, insert length is 8.69 mm (0.3421 inches), and the corner radius is 0.40 mm (1/64 inches). Neutral hand orientation makes it suitable for both left- and right-hand toolholders. It is intended for installation and use by experienced CNC machinists and turning-center operators working in production or job-shop environments.

This insert is suited for finish and semi-finish turning of hardened steels, cast irons, and similar difficult-to-machine materials classified under ISO workpiece material code H. It belongs to the T-Max P series, which is engineered for external and internal turning applications. The WNGA profile and negative geometry provide stable cutting action under consistent chip load conditions. Typical use cases include hard turning operations on heat-treated components where grinding would otherwise be required, helping reduce cycle time in precision turning cells.

Key Features

• Cubic boron nitride (CBN) insert material for hard turning of ferrous workpieces
• TiN PVD coating for improved surface finish and wear resistance
• 80-degree trigon (W) insert shape with neutral hand orientation
• Corner radius of 0.40 mm (1/64 inches) for controlled surface contact
• ER-treated, negative-land cutting edge style for edge strength and chip control
• T-Max P series with clamp and pin holding method for secure seating in compatible toolholders
• Maximum depth of cut of 3.00 mm (0.1181 inches) for controlled material removal

Compatibility

Designed for use in T-Max P series toolholders that accept WNGA-style inserts with a 0.5-inch inscribed circle and a 0.2032-inch hole diameter. Consult the SANDVIK COROMANT toolholder selection guide to confirm seat geometry and clamping compatibility before installation.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician. Power down and lock out the machine before seating or replacing inserts. Ensure the insert pocket and seating surface are clean and free of chips or debris before clamping. Use the specified clamp and pin holding method as required by the T-Max P toolholder design, and verify insert seating torque per the toolholder manufacturer's specification.