Thrusters are extensively used in the Offshore industry, particularly on mobile offshore drilling units.
Castrol cater for all the requirements of most propulsion package manufacturers as listed below. As the thrusters used to keep equipment in place can leak, it is preferable to use an environmentally responsible lubricant, such as Castrol Biostat, in order to minimise the environmental impact.
Castrol BioStat lubricants are based upon carefully selected base oils in order to give a product which is resistant to breakdown by hydrolytic, thermal or oxidative mechanisms but which provides high levels of biodegradability in the marine environment. It ensures a high level of biodegradation, reduced potential for bioaccumulation and low toxicity to marine organisms should it enter the sea. Castrol BioStat forms an emulsion in water which means that any egress to the environment is more readily broken down and any water ingress to the lubrication system is contained to minimise operational impact.The product provides an excellent protection for marine thrusters, ster tubes, spur, planetary or helical gear units or rolling and sliding bearings used in Offshore sector.
ALPHA SP RANGE
The Alpha SP gear oils is a range of high quality mineral lubricants enhanced with sulphur/phosphorus extreme pressure additive technology, providing outstanding thermal stability and high load carrying capacity. The range is particularly suitable for use in thrusters and pitch control in offshore applications.
Castrol Hyspin AWH-M is a range of premium high viscosity mineral oils , enhanced with anti-wear and anti-corrosion additives and a shear-stable viscosity index improver which helps maintain the viscosity characteristics of the product over a wide temperature range. Hyspin AWH-M has excellent hydrolytic stability and separates rapidly from water contamination.The range is suitable for thruster steering and retraction system.
MOLUB-ALLOY 6040/460-1 1/2
Castrol Molub Alloy 6040/460-1 1/2 is calcium complex highly water resistant EP grease. High performance multi-purpose grease for use in plain, antifriction bearings. The extreme pressure properties are most evident in application with frequesnt start-up, slow speeds or where high or unexpected loads take place. Particularly suited as a curved tooth couplings grease for offshore applications transmitting high horse power.
Castrol Spheerol AP3 is a lithium-based grease incorporating solvent-refined base oils. It contains oxidation and corrosion inhibitors, which help to ensure long service life and a high level of protection for metal surfaces. Spheerol AP 3 is additionally water-resistant. Spheerol AP 3 is primarily intended for use in plain and roller bearings of all types under normal load conditions Spheerol AP3 is particularly suitable for use as electric motor grease.
Spheerol SX2 is a calcium complex sulphonate grease providing superior performance benefits in the highly aggressive conditions experienced in the marine environment: resistant to both fresh and salt water providing a high level of corrosion protection. Spheerol SX 2 is a multipurpose lubricant specifically developed to provide enhanced lubrication and protection for bearings, wire ropes and open gears found usually in offshore environments. In propulsion applications is used for void spaces (hubs) and general greasing.
Castrol Tribol 3020/1000 lithium greases with TGOA were designed for very heavy duty service in adverse environments. Through their formulation and advanced TGOA additive system, they are able to withstand the shock and heavy loading commonly found in the processing of primary metals as well as in cement, construction, and mining industries. Primary application offshore is curved tooth couplings on thruster packages, however can be used in gearboxes which are not oil tight and heavily loaded rolling and sliding bearings. Always check your equipment manual and consult with a Castrol Technical Service Engineer to choose the right product for the right application.