To address the challenges of traditional bearing types, Same Sky has introduced the omniCOOL™ system, found in its line of advanced sleeve bearing fans, which promotes extended fan life and performance. These designs incorporate either magnetic rotor-balancing (referred to as the “magnetic structure”) or an enhanced sleeve bearing. Dc fans with the omniCOOL system that utilize the magnetic structure design include a “-V” suffix on respective part numbers. The omniCOOL system’s magnetic structure effectively makes the rotor work like a spinning top – but one that never falls over and can operate at any angle. The magnetic structure sits in front of the rotor and, because its flux is parallel to the direction of the rotor shaft, it uniformly attracts the entire rotor, at whatever angle the fan unit is being held. The shaft tip is held in place by a supporting cap at the very front of the bearing bore, forming the point around which the rotor can rotate, like the point on a spinning top. Thanks to the magnetic structure, the shaft and bearing sleeve no longer bear the weight of the rotor, which is instead suspended in the air. Additionally, the magnetic field works to lower the center of gravity by pulling the shaft downward, minimizing the tilt and wobble issues that exist with traditional sleeve bearings. This enables a fan with the omniCOOL system to be used at any angle and dramatically reduces the friction between the shaft and the inside of the bearing.