In a turbine less than 150Kw, how are the bearings typically lubricated?

In a turbine with a power output of less than 150 kW, ring oiled bearings are commonly used for lubrication due to their effective design for such applications. Ring oiling systems utilize a continuous supply of oil that is distributed around the bearing surfaces through a series of grooves or channels. This method ensures that the bearings are consistently lubricated, which helps to reduce friction, minimize wear, and dissipate heat.

The use of ring oiling is particularly beneficial in smaller turbines as it provides reliable lubrication, is relatively simple to maintain, and ensures that oil can circulate efficiently to the critical areas of the bearing. The design also allows for easy monitoring of oil levels and flow, which is crucial for maintaining the performance and longevity of the turbine.

While other lubrication methods exist, such as oil mist lubrication, pressure-fed systems, and grease fittings, these options may be more suited for larger or more complex turbine systems, where different operational demands or environments necessitate alternative approaches.