Sandvik Coromant 5723684 Turning Insert CCMT21.51-UR 235

Product Description

The SANDVIK COROMANT 5723684 is a CCMT-style solid carbide turning insert in the CoroTurn 107 series, designed for external and internal turning operations on CNC lathes and turning centers. It carries a CVD-applied TiCN and TiN coating over a carbide substrate, delivering wear resistance and thermal stability during continuous and light interrupted cuts. The insert features an 80-degree diamond shape, a 1/4-inch inscribed circle, a 1/64-inch corner radius, and a UR chip breaker geometry. With two cutting edges per insert and a screw-type holding method, it provides consistent edge repeatability for production turning environments.

This insert is suited for turning steel and stainless steel workpieces in both roughing and finishing passes where controlled chip evacuation is critical. The UR chip breaker geometry is optimized for medium to light depths of cut on steels and austenitic stainless grades. Typical install scenarios include OD turning and facing operations on conventional and live-tooling setups. It is applied by machinists and CNC programmers in job shops, production facilities, and maintenance machine shops working with P-class and M-class ISO workpiece materials.

Key Features

• CVD-coated TiCN and TiN layers for extended tool life on steel and stainless steel
• 80-degree diamond insert shape (CCMT) for versatile turning and facing applications
• UR chip breaker geometry optimized for medium to light cuts on P-class and M-class materials
• 1/64-inch corner radius for a balance of edge strength and surface finish capability
• Screw-type insert holding for secure, repeatable seating in CoroTurn 107 compatible toolholders
• Two cutting edges per insert maximizing cost-per-edge value

Compatibility

Designed for use with CoroTurn 107 series toolholders that accept CCMT 06 02 04 inserts. Primary workpiece material is steel (ISO code P); secondary workpiece material is stainless steel (ISO code M). Insert size code 21.51 with clearance code C and tolerance code M.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate Torx or hex key to seat the clamping screw to the toolholder manufacturer's specified seating torque. Inspect the insert pocket and seating surfaces for chips or debris before installing a new edge to ensure proper contact and prevent insert rocking.