Star-shaped Grooving Cutters (also referred to as Penta Grooving Tools) are cost-effective indexable tools for CNC grooving and parting operations. They are named for their pentagram-shaped insert structure with 5 cutting edges, and are primarily suitable for machining shallow grooves, wide grooves, parting cuts, and shoulder grooves—especially ideal for small part and batch production scenarios.
Shallow grooves, wide grooves, and snap ring grooves on the outer circle of shaft/disc parts;Parting of small parts and thin-walled parts;Precision turning of shoulder grooves and adjacent deep shoulders;Groove machining of materials such as steel, stainless steel, cast iron, aluminum alloy, and copper.
Five-edge design: Multiple usable edges per insert reduce replacement frequency, significantly improve machining efficiency compared with traditional tools, and offer excellent cost-effectiveness and durability.Stable precision: Fully ground cutting edges and high-precision positioning ensure consistent machining dimensions and high groove wall finish.Vibration and chipping resistance: The insert’s high-strength design, combined with specialized coatings, effectively prevents built-up edge and chipping, making it suitable for heavy-duty cutting.High versatility: The same tool holder can accommodate inserts of different edge widths, supporting multi-specification groove machining and reducing tool costs.