Helios AMD 355/4

Medium-pressure tube fan with a cylindrical tube sleeve and flanges on both sides, directly driven. The cylindrical tube is made of galvanized sheet steel, featuring flanges formed on both sides and a hole pattern in accordance with DIN 24155 sheet 3 with an integrated guide vane. The axial impeller is made of plastic with 14 spatially curved blades. It operates vibration-free thanks to dynamic balancing in accordance with quality level G 6.3 VDI 2060 and DIN ISO 1940. The three-phase squirrel-cage motor is speed controllable by voltage reduction, equipped with thermal contacts, has an enclosed design, is maintenance-free, and features sealed, low-noise ball bearings with long-term lubrication.