Seco E2504731200 ISO 50 Taper Whistle Notch Face Mill Arbor

This is a Seco EPB E2504731200 face mill arbor with an ISO 50 (SK50) taper shank, manufactured in France and supplied new in original Seco EPB packaging (EDP 73003, order reference 179836020/007). The arbor features a whistle-notch retention style taper with a dual-ring precision flange and coolant ports visible at the top of the flange face, designed to mount shell-style or bolt-on face mill cutters; the face of the arbor body shows a large-diameter bolt circle with multiple threaded holes and two hex-drive clamping screws for secure cutter retention. The ISO 50 (DIN 2080 / MAS BT50-equivalent) taper is a large-diameter steep-taper standard used on heavy-duty horizontal and vertical machining centers as well as horizontal boring mills where high torque transmission is required. Condition is new — other: the unit shows surface oxidation and shop storage marks consistent with long-term warehouse storage, but all precision taper and mounting surfaces appear intact.

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