Hydraulic system, winch
Vessel: Tug boat “BEAUFORT”, 2010 built by Damen shipyard in the Netherlands
Hydraulic oil: Shell Tellus 46
Oil volume: 1.200 Litres
High temperatures put an extreme strain on the hydraulic oil of the winches and accelerate oil ageing processes with immense consequences for the entire hydraulic system. To value the oil more precisely, an oil sample was taken and analysed by an independent laboratory. Result of the analyses: high varnish and particle content; the oil was so dirty that the exact number of particles was not countable; black filter test membrane. The hydraulic system was extremely dirty.
At that point, the Dublin Port Company had already installed a CJC® Hydraulic filter 27/108 in the offline flow on their RoRo Ferry ram hydraulic system. Because of the excellent results on the ferry, the ship owner decided to test such a CJC® filter for the tug boat’s winch hydraulic system.