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For transmission systems, automated machinery and precision tooling, rotary flange parts with mounting holes, threaded holes and internal keyways serve as core components for power transmission and positioning assembly. These parts combine outer circular profiles, step faces, circumferential holes and internal keyways, demanding strict geometric tolerance, accurate hole indexing and superior surface finish.

It is challenging to produce such complex flanges. Combined rotational and non‑rotational features require turn‑mill composite machining. All turning, drilling, tapping and keyway milling operations are finished in one setup, avoiding cumulative errors caused by repeated clamping and ensuring interchangeability during assembly.

The stainless‑steel flange shown integrates counter‑sink holes, threaded holes, locating holes and internal drive keyway. Completed by integrated turn‑mill machining, it delivers smooth high‑quality surface, precise hole indexing and well‑fitted keyway. Widely used for transmission connection, tool adapter and spindle assembly.

Custom material options include stainless steel, alloy steel and aluminum. Non‑standard bore size, special keyways and seal grooves are available. We support prototype sampling and mass‑volume production.

For equipment refurbishment, import‑part replacement or new project development, send your CAD drawing for manufacturability review and quotation.