Large-Bore Through-Hole Slip Ring Built with Rugged Aluminum Alloy Housing ECN200-04P4-03P3-12S is CENO large-bore through-hole slip ring with a Ø25.4mm inner bore, designed for heavy-duty industrial rotating systems. It integrates 3 circuits of power or signal transmission through precious metal contacts, ensuring stable and low-noise performance. The rugged aluminum alloy housing handles high-speed rotation up to 300 rpm. Each unit is serialized and CE/RoHS certified,