An industrial heavy load electric linear actuator includes a gearbox, an electric motor, a lead screw, an extension pipe and a load baring structure. The electric motor is connected to the gearbox. A portion of the lead screw is received inside the gearbox and driven by the electric motor, and another portion of the lead screw is extended out of the gearbox. The extension pipe is movably fastened to the lead screw. The load bearing structure includes a sleeve, a bearing, a fastening element, a fixation seat, and a rear supporting seat. The sleeve is mounted to the lead screw and holds the bearing jointly with the fastening element. The fixation seat and the rear supporting seat hold the bearing at outer perimeters of the sleeve and the fastening element.