Sandvik Coromant 5756146 WCMX51 H13A Indexable Drill Insert

Product Description

The SANDVIK COROMANT 5756146 is a solid carbide indexable drill insert in WCMX style, grade H13A, designed for use in indexable insert drills on CNC machining centers and drill presses. The insert features a 3/8 inch (0.3750 inch) inscribed circle, a 5/32 inch (0.1563 inch) thickness, and a trigon geometry with a 7-degree relief angle. The chipbreaker designation is 51. The bright, uncoated finish makes it well suited for applications where coating interaction with the workpiece material is a concern. This insert is installed by machinists and tooling technicians as a direct replacement in compatible insert drill bodies.

This insert is intended for metal-cutting operations including drilling in steel, cast iron, and similar materials where a solid carbide, uncoated grade performs reliably. The WCMX insert style and H13A grade are commonly specified for general-purpose drilling applications in production and job-shop environments. The trigon shape provides a stable cutting geometry suited for the inner or outer pocket positions in indexable drill systems that accept WCMX-style inserts.

Key Features

• Solid carbide construction for rigidity and wear resistance in drilling applications
• H13A uncoated grade with bright finish, suitable for materials sensitive to coated inserts
• 3/8 inch inscribed circle with WCMX insert style geometry
• 7-degree relief angle with trigon shape for stable cutting action
• 0.80 mm (0.0315 inch) corner radius for controlled edge engagement
• Mounting hole diameter of 0.1457 inch (3.70 mm) for secure clamping in the insert pocket

Compatibility

Designed as a direct-fit replacement insert for indexable drill bodies that accept WCMX-style inserts with a 3/8 inch inscribed circle and a 0.1457 inch mounting hole. Consult the drill body manufacturer specifications to confirm pocket geometry and insert size compatibility before installation.

Installation Notes

Insert replacement should be performed by a qualified machinist or tooling technician with the machine powered down and locked out per applicable safety procedures. Use the correct torque wrench and insert screw specified by the drill body manufacturer when seating the insert to avoid seat damage or insert fracture. Inspect the insert pocket and clamping screw for wear or debris before installing a new insert. Do not exceed the drill body manufacturer recommended cutting parameters for feed rate and spindle speed with this insert grade.