Square Shoulder Mills Offer Large Depths of Cut

Seco Tools’ R220.LN14 square shoulder mills provide four cutting edges with a 14-mm (0.551") cutting edge length to reduce cost per edge while improving performance in demanding applications requiring a large depth of cut.

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Seco Tools’ R220.LN14 square shoulder mills provide four cutting edges with a 14-mm (0.551") cutting edge length to reduce cost per edge while improving performance in demanding applications requiring a large depth of cut. Negative-rake, 7-mm-thick (0.28") inserts provide the robustness needed for heavy cuts in difficult materials, long-reach applications and less stable setups.

The standard tools are able to take depths of cut ranging to 14 mm (0.551"), while helical versions are offered in cutting edge lengths for both contouring and slotting applications. The R220.LN14 cutters are particularly well-suited for medium- to heavy-duty applications requiring a 90-degree wall.

Inserts are available in six grades: MS2500, a CVD-coated, wear-resistant and tough grade for machining super-alloy materials and high-carbon steels; the tougher 420470; 150060, which is similar to Seco’s F40M; 029060, an alternative to the company’s MK1500 with a PVD coating; MP2500, a medium-steel CVD Duratomic grade; and MK1500, a cast iron CVD Duratomic grade.