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Vibration Analysis and condition monitoring on large machinery

Industrial machinery health assessment is part of condition monitoring activities that is in practice for long time. Both the product and process related industries follow this as a predictive methodology to keep the operational uptime of the equipment at its optimum. International standards such as ISO 20816 govern the vibration limits based on equipment type, its mounting conditions and power rating.However, there are some specific equipment in an industrial environment that due to their reach, operations and other constraints are difficult to bring under the conventional condition monitoring program. Of many such equipment, EOT cranes used in large steel industry is discussed here.The EOT cranes are a special variety of mechanical equipment that have a combination of moving sub-systems along with axis drive motors, lifting motors and associated gear-box kinematics; further, there are long travel and cross travel platforms with the entire crane girder moving on rail bogies.

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