As a follow up to my post that introduced the iPRO from AEGIS, here’s a success story.
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Ground Ring Solves Chronic Bearing Damage in Crane Motors at Container Ports
At the Pacific Container Terminal in Long Beach, California, huge cranes life boxcar-sized containers, arranging them neatly on trains, trucks, and the decks of ships. If the cranes are not working, the whole process shudders to a halt.
SSA Marine, owner of the cranes, is just emerging from an ordeal. For years, every one of the company’s 10 cranes, each capable of lifting 50 tons, was plagued with chronic bearing damage. But Reed Electric & Field Service, a Los Angeles motor repair plant, has finally found the cure—the AEGIS® iPRO Bearing Protection Ring manufactured by Electro Static Technology.
According to the article, the iPRO is maintenance-free:
The maintenance-free AEGIS iPRO is available in a range of sizes to accommodate generator/motor shafts up to 30” in diameter. To facilitate field retrofits, the iPRO split-ring comes in mating halves that simplify the ring’s installation.
Embedded securely in the AEGIS FiberLock channel along the inner circumference of the iPRO, six rows of conductive microfibers completely surround the motor shaft, providing millions of discharge points for harmful shaft currents and effectively diverting these currents to ground.
Compatible with current monitoring equipment, the AEGIS iPRO is the longest-lasting and most effective shaft grounding device on the market today. It works even in the presence of oil, dirt, grease, or other contaminants. As part of a preventive maintenance program, it can be installed on in-service motors or whenever bearings are replaced.
How about you? Have you dealt with shaft voltage?