Seco MK2050 R20 16-Edge Carbide Round Milling Insert (4 Pcs)

This listing is for four (4) new Seco Tools MK2050 R20 round carbide milling inserts, clearly marked on the face of each insert as visible in the photos. The MK2050 designation identifies the Seco carbide grade: MK2050 is a PVD-coated (TiAlN-based) cemented carbide grade designed for milling of steel, stainless steel, and cast iron at medium to high cutting speeds. The "R20" suffix denotes a round (circular) insert with a 20 mm inscribed circle (IC) diameter — a large-format round insert providing 16 usable cutting edges per insert (indexed cutting positions 1–16 are engraved on the face, clearly visible in photos), maximizing economy. These inserts feature a scalloped/lobular periphery on the carbide substrate for positive chip control and stable seating, with the outer flank surfaces exhibiting the characteristic PVD purple/violet interference color confirming the coating. R20 round inserts of this size are used in Seco face milling and copy milling cutters accepting 20 mm IC round inserts, such as the Seco R220 and compatible round-insert milling bodies, for applications including face milling, copy milling, ramping, and helical interpolation in steel and stainless workpieces.

Product Specifications