Sweden-based bearing manufacturer SKF is piloting an on-line bearing monitoring system for container crane gearboxes at Yantian International Container Terminals (YICT) in China. It is not unknown for the main hoist gearbox to last the life of the crane, but an unexpected failure is one of the most costly and difficult-to-repair incidents that can happen in a crane’s drive system.
There are many diagnostic tools that terminals can use to monitor the condition of a gearbox. One is oil analysis, where oil samples are tested for particle and/or moisture content that indicate a component problem. Other technologies such as ultrasonic sensors, thermal imaging and vibration analysis can be used to identify the problem area or component with more precision, without requiring the gearbox to be dismantled.
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This complete item is approximately 1000 words in length, and appeared in the July 2011 issue of WorldCargo News, on page 21. To access this issue download the PDF here.
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