Bearing temperatures are related directly to load, and in cases the temperature rises rapidly, this is usually indicative of overloading. We have seen many cases in which equipment has been installed with poor alignment accounting for loaded parameters of the vessel which may only become apparent in heavily loaded conditions. It is also possible that a leaking aft seal causing water ingress could affect lubricant performance resulting in temperature spikes. An urgent review of the system together with an alignment check would be the best course of action to identify root cause – and could be offered as a complete solution from AtZ.