Sumitomo CCMT21.52ES Indexable Carbide Inserts

Sumitomo CCMT21.52ES AC630M is a four-edge, rhombic carbide turning insert in Sumitomo's CCMT lineup, designed to be indexable in turning tools for multiple edge use. The CCMT21.52 designation indicates an inscribed circle of 21.52 mm, while the ES suffix denotes a specific edge/finish option; this variant is paired with the AC630M coating grade, known for its wear resistance and high-temperature stability. As a four-edge insert, CCMT geometry enables rotating to use fresh edges to maintain cutting performance across production runs. Coated carbide inserts in this family are intended for turning operations and compatible with standard CCMT tool holders, delivering reliable wear resistance at typical turning speeds. This combination of geometry, coating, and edge availability makes the CCMT21.52ES AC630M well-suited for precision turning tasks where edge integrity and repeatable results are important.