Thordon轴承highlightin已经发表了一项研究g the commercial and environmental benefits of seawater-lubricated propeller shaft bearing arrangements, indicating that shipowners can make substantial operational savings by giving up the outdated oil lubricated shaft.
这项研究是在德国汉堡举行的SMM 2018贸易展览会期间首次提出的研究结果,是针对石油和基于石油的环境可接受的润滑剂(EAL)润滑体润滑型失败的响应的响应。正在给船东带来额外的不必要的财务负担。
尽管引入了立法,以减少航运对海洋的影响,以及船东永远需要降低运营成本的需求,大多数商业远洋船只继续使用一种正在增加风险且运营成本高昂的系统。
Thordon Bearing的市场营销和客户服务总监Craig Carter表示:“令人惊讶的是,所有新商业船中有95%以上的船只继续建造使用石油润滑螺旋桨轴 - 这种系统不仅在操作上昂贵,而且在环境方面令人怀疑。”
“Our Future, Our Ocean paper presents the case for water lubrication to shipowners and shipbuilders as a commercially and technically viable way of increasing profits while achieving corporate sustainability goals.”
The 14-page document explains that while the low capital expenditure of an oil-lubricated system is an obvious attraction, any financial advantage is completely lost once the vessel enters the water. This, cites Thordon Bearings, is due to the costs associated with purchasing lubricating oils, the regular maintenance and unscheduled drydockings required to repair or replace faulty shaft seals.
While emergency seal repairs alone can cost anywhere from US$150,000 to US$300,000, excluding drydock costs, the paper furthers that the constant topping up of an oil-lubricated system, combined with the regularity of aft seal failure, can cost shipowners in excess of US$6.5 billion over a twenty-five-year period.
该论文显示,对于典型的单螺钉散装载体,旋转650毫米轴,运营25年以上的油润滑系统的总成本(包括资本投资)为605,925美元,而海水润滑安排的总成本为370,000美元。
尽管运营油润滑系统的一部分成本取决于油价的波动,并且不考虑使用更昂贵的EALS的使用,但使用海水作为润滑培养基显然是免费的。
“虽然已经有充分的文献记录了从斯特恩蒂伯(Sterntubes)泄漏燃油的环境影响,但尚未解决船东底线的商业影响。这项研究旨在通过继续使用油润滑螺旋桨轴轴承系统来提高人们对商业弊端的认识,同时提供更具成本效益和更环保的解决方案。”
Thordon Bearings
thordonbearings.com
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