Oil is retained in a tank, approximately 200ltrs, the tank can be positioned at virtually any convenient location close to the screen.
Filtered clean oil is pumped continuously into each bearing and is drained from the screen centre tube and pumped back to the main storage tank. The returned oil is filtered prior to entering the storage tank.

Heat is absorbed by the oil as it passes through the bearings, this heat is dissipated in the tank but will accumulate. To maintain optimum operating temperature of 60-70 Celsius, and automatic air blast oil cooler circulates oil in the storage tank, again with oil filtration.

The oil used is EP68, much lower viscosity than standard oil bath which is EP220, can be mineral not synthetic and requires changing annually.

The use of RAP materials, does not affect the operation of the system, as the oil absorbs heat and cools the bearings as it passes through with any excess heat removed by the air blast cooler. All servicing is carried out at ground level, and only requires occasional visual inspection of oil pipes and general mechanical items.