RINGFEDER RFN 4061 30X52 Shrink Disk

RINGFEDER RFN 4061-030 shrink disk, 30 mm ID and 52 mm OD, is a three‑part, keyless shaft‑to‑hub connection that clamps a hub to a shaft without a key. The RFN 4061 family is the direct successor to RFN 4071 for inner diameters up to 200 mm, offering a compact, reliable method for transmitting torque in rotating assemblies. A stainless steel version, RFN 4061 stainless steel, is also available, expanding corrosion resistance for demanding environments. The three‑part design uses high‑strength ISO 4762 screws to secure the assembly, delivering a controlled clamping force that holds the hub on the shaft without altering either component. For safety and longevity, optional safety covers protect exposed screw heads on rotating discs. RFN 4061 is designed for non‑keyed mounting applications where repeatable, serviceable clamping is advantageous in small‑to‑medium drives.