Direct-Drive System For Cooling System Fans, Exhaust Blowers And Pumps

An air-cooled heat exchanger for cooling process fluids used in an industrial process, comprising:

• a support structure;
• a tube bundle supported by the support structure and configured to receive process fluids used in an industrial process;
• a fan for producing air-flow through the tube bundle;
• a torque multiplier device including a rotatable output shaft that is attached to the fan;
• and
• a load bearing motor supported by the support structure and comprising a rotatable shaft, the load bearing motor being connected to the torque multiplier device such that the rotatable shaft of the motor drives the torque multiplier device, the load bearing motor further comprising a bearing system comprising a plurality of bearings that bear fan loads and enable the motor to operate in a forward direction or reverse direction, the plurality of bearings being configured to absorb the thrust load caused by the weight of the fan and fan thrust forces due to airflow produced by rotation of the fan, oppose the radial loads at a thrust end of the rotatable shaft and oppose the reverse thrust loads that occur during reverse rotation of the fan or high wind gusts.