Application Profile CECON Clutch Steel Mill Cooling Fan Drive Product Application P-7972-MC 1/19 A leading industrial fan OEM needed a clutch solution for a large cooling fan installed at a steel mill. The heavy-duty fan required a low-speed turning gear drive that keeps the fan impellers rotating slowly when the main drive is shut down. Without the slow rotation in the high-temperature mill environment, the impeller would heat or cool unevenly and distort the fan blades and/or shaft. Additionally, slow rotation is necessary to insure proper lubrication of the fan bearings. When the fan’s main drive is shut down, the overrunning clutch engages the smaller, turning gear drive. The low-speed drive is also used to start the fan from rest before the larger high-speed motor is turn

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