One of the consistent themes that has surfaced when working with industrial clients is their reliance on high performance rotating machinery. Whether it’s steam turbines delivering electrical power or compressors in mid stream gas fields, these machines are the foundation for most heavy industries. If youconsider the combustion engine as a rotating machine as well, we are surrounded by equipment that has been engineered to spin large amounts of metal at significant frequencies for long periods of time. After spending some time with clients managing these machines, I am awed by the level of engineering required in these mechanical marvels of technology. I am also not surprised by the level of monitoring and maintenance required to keep these machines in action.