Sandvik Coromant 5724016 Turning Insert CCMT21.51-UM 235

Product Description

The SANDVIK COROMANT 5724016 is a solid carbide turning insert in the CCMT21.51-UM 235 geometry, designed for external turning operations on CNC lathes and turning centers. It carries a CVD-applied TiCN and TiN coating over a carbide substrate, which supports wear resistance and thermal stability during continuous and semi-interrupted cuts. The insert features an 80-degree diamond shape, a 7-degree relief angle, and a UM chip breaker geometry. With a 0.25-inch inscribed circle and a corner radius of 0.0156 inches (1/64 inch), it is suited to moderate depths of cut and general-purpose turning profiles. Two cutting edges are available per insert.

This insert is part of the CoroTurn 107 series and is primarily rated for steel (ISO material code P) with secondary capability on stainless steel (ISO material code M). It is used in production turning environments where consistent chip control and surface finish are required. The ISO designation for this insert is CCMT 06 02 04-UM 235. Installation requires a compatible CCMT-style screw-clamping toolholder. Typical applications include shaft turning, facing, and contour work on ferrous workpieces in both job shop and high-volume production settings.

Key Features

• CVD-applied TiCN and TiN dual-layer coating for thermal and abrasion resistance
• 80-degree diamond insert shape (CCMT style) with 7-degree clearance angle
• UM chip breaker geometry optimized for steel and stainless steel turning
• Corner radius of 0.0156 inches (1/64 inch) for controlled surface finish
• Screw-clamping hold method compatible with CoroTurn 107 toolholders
• 2 cutting edges per insert for cost-effective tooling management

Compatibility

Designed for use with CCMT-style screw-clamping toolholders in the CoroTurn 107 system. ISO code CCMT 06 02 04-UM 235 confirms fitment with any toolholder accepting that insert designation.

Installation Notes

Insert seating and clamping should be performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before changing inserts. Use the correct Torx or hex key to secure the clamping screw to the toolholder manufacturer's specified procedure — do not overtighten. Inspect the insert pocket and seating surface for chips or debris before seating a new insert to ensure proper contact and runout.