Many operators consider environmentally acceptable lubricants a cure to meeting environmental regulations. However, their performance as a propeller shaft having lubricant has come under scrutiny.
In this video, Thordon Bearing explains how to convert a hydro-turbine main shaft guide bearing from an oil lubricated system to water. Providing water as an alternative to oil lubrication is a long standing area of expertise for Thordon Bearings. Their non-metallic bearings have been operating in the hydro industry for over 30 years.
Thordon Bearings’ Jacksonville-based distributor Coppedge Marine has secured an order with Tropical Shipping, for the COMPAC seawater lubricated propeller shaft bearing system, destined for two 300TEU environmentally-compliant box ships under construction in China, at the Guangzhou Huangpu Wenchong Shipyard.
Thordon Bearings and Drydocks World-Dubai have signed an agreement, in order to promote the conversion of ships’ oil lubricated propeller shafts to Thordon’s COMPAC open seawater lubricated bearing system.
Craig Carter, Thordon Bearings’ Director of Marketing and Customer Service, addressed World Ocean Council members on the need to prevent 244 million litres of operational oil from leaking into oceans each year.
Thordon’s Bearings launched new SeaThigor forward at SMM this week. SeaThigor safety seal design incorporates a pneumatically activated inflatable element to stop water ingress along the shaft, allowing for the repair of the main seal whilst at sea, or allows for the shaft to turn at a lower speed so the vessel can safely return to port for primary seal repair or replacement.
Wärtsilä launches Wärtsilä Sea-Master system for monitoring the condition of tail shaft equipment. The Wärtsilä Sea-Master system uses digital technology to monitor shaft bearings and seals to help customers maximise uptime and lower lifecycle costs of vessel shaft lines.
Thordon Bearings has called on the marine industry to investigate the characteristics of both conventional seawater-lubricated propeller shaft systems and podded propulsion arrangements in order to provide shipowners with a better understanding of the two very different propulsion configurations.
Thordon Bearings has signed a landmark contract to supply COMPAC seawater-lubricated propeller shaft bearing solutions to two Jones Act containerships under construction at the Aker Philadelphia Shipyard Inc. (APSI) for Matson Navigation Co. Inc.
DNV GL has published new rules for voluntary class notations governing the design and follow-up monitoring of water-lubricated stern tubes which waives the requirement to withdraw and inspect the tail shaft and bearing every five years. A condition monitoring system which predominantly uses a sensor that measures stern tube bearing wear each time the propeller shaft stops turning allows the crew to monitor the condition of the bearings.
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