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Mobil Stern Tube Lubricant、美孚斯特恩地铁润滑油详细说明 (浏览612次)

Mobil Stern Tube Lubricant

Product Description

Mobil Stern Tube Lubricant is a high performance, high viscosity lubricant developed especially for the lubrication of Cedervall-type stern tube bearings used in ships and for certain bearings of ships' fin stabilizers. Mobil Stern Tube Lubricant is formulated from relatively high Viscosity Index (VI) base oils combined with emulsifiers, structure modifiers, surface active agents and corrosion preventives. It emulsifies readily with seawater to form a stable water-in-oil emulsion that is adhesive and an excellent lubricant. It provides effective rust protection in the presence of seawater and the lubricating film is resistant to water washing so that corrosion protection is maintained for extended periods under severe operating conditions.

Where the propeller shaft passes through the hull of a ship, it is supported by a bearing that is housed in the stern tube. Three distinct types of bearings are employed in this application: 1) The lignum vitae bearing, which has a stuffing box on the inboard side and no seal on the outboard side, is lubricated by seawater. The stuffing box may be lubricated with grease or oil, if this is deemed necessary. 2) Bronze or white metal bearings having oil-tight rubber seals on the inboard and outboard ends normally are filled with a lubricating oil that readily separates from water. Turbine oils, engine oils or hydraulic oils of the required viscosity generally are recommended. 3) The Cedervall type, which is a bronze or white metal bearing having an oil-tight inboard seal or stuffing box and metallic outboard seal that is not fully oil-tight, requires a lubricant that readily emulsifies with water. Mobil Stern Tube Lubricant has been formulated to meet this need. With the Cedervall type bearing a high viscosity lubricant generally is supplied to the bearing from a gravity tank located above the waterline so that the lubricant is under sufficient pressure to help exclude water from the bearing.

A recent development in ship stabilizers is the Denny-Brown-AEG stabilizer developed jointly by Brown Brothers and Co. Ltd, William Denny and Brothers Ltd., AEG, and Deutsche Weft. In these newer designs, the fins are mounted on trunnion bearings which permit them to be folded forward into storage boxes in the hull of the ship when not in use. A fixed shaft extends from the crux trunnion and the fin is mounted on this shaft on two bearings, which permit the fin to be tilted by a hydraulic mechanism to provide the righting movement to reduce roll of the ship. The interior of the fin and the fin bearings are lubricated by gravity from a header tank located above the waterline and the crux trunnion bearings are lubricated by pressure feed from a lubricator pump.

 

Features and Benefits

The requirements for lubrication of these three sets of bearings in the stabilizers and stern tubes are sufficiently similar so that a single, carefully formulated lubricant can be used for all of them. To perform satisfactorily, however, the lubricant must have the correct viscosity to flow properly under gravity head without excessive rapid flow that would result in high consumption; must minimize wear under the heavy loads encountered in the bearings; must protect the bearings and other components from corrosion and must emulsify with any seawater that passes the seals in order to maintain lubricating characteristics and minimize corrosion.

In stern tube applications, consumption of the lubricant is a major concern, both from the standpoint of the cost of the lubricant and the cost of labor required to fill the tanks. In two ship trials conducted over an extended period, Mobil Stern tube Lubricant gave significantly reduced consumption compared to the previous formulation, and at least as low as the best competitive product. Throughout the tests, lubrication was entirely satisfactory. These results indicate that Mobil Stern Tube Lubricant provides effective and low cost lubrication of stern tube bearings.

Key features and potential benefits include:

Features Advantages and Potential Benefits
Selected viscometrics Effective lubrication of critical stabilizer and stern tube components
Good emulsification properties Emulsifies readily to maintain lubrication in the presence of seawater
Excellent rust and corrosion properties Protects critical bearing surfaces exposed to seawater
Multi-use capability Reduces the number of lubricants required on-board
Good viscosity retention in severe applications Effective leakage control and reduced oil consumption

 

Applications

Mobil Stern Tube Lubricant is recommended for the lubrication of Cedervall-type stern tube bearings on ships where a high viscosity, readily-emulsifying lubricant is recommended by the manufacturer. It is also recommended for the lubrication of fin tilting bearings, as well as the crux trunnion bearings of Denny-Brown-AEG ship stabilizers and is approved by the manufacturer for use in these applications.

 

Specifications and Approvals

Mobil Stern Tube Lubricant has the following builder approvals  
Brown Brothers and Company, Ltd.  
William Denny and Brothers Ltd.  
AEG  
Deutsche Weft  

 

Typical Properties

Viscosity  
cSt @ 40?C 385
cSt @ 100?C 24
Viscosity Index, ASTM D 2270 82
Pour Point, ?C, max, ASTM D 97 10
Flash Point, ?C, min, ASTM D 92 246
Density @15?C kg/l, ASMT D 4052 0.915
API Gravity 23.1
Rust Test-Seawater, ASTM D 1401 Pass
Timken Salt Water Corrosion Test Pass
Emulsion Test, ASTM D 1401  
Emulsion @ 60 min, ml 60
Emulsion characteristics Thick and Stable

 

Health and Safety

Based on available information, this product is not expected to produce adverse effects on health when used for the intended application, following the recommendations provided in the Material Safety Data Sheet (MSDS). MSDSs are available upon request through your sales contract office, or via the Internet on http://exxonmobil.com. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.


The ExxonMobil logotype, and Mobil are trademarks of ExxonMobil Corporation, or one of its subsidiaries. 

5-2013 

Copyright ? 2001-2013 Exxon Mobil Corporation. All rights reserved.

   

斯特恩美孚地铁润滑油

产品描述

美孚斯特恩管润滑剂是一种高性能,高粘度润滑油的开发,尤其是对的Cedervall型用于船舶艉管轴承的润滑和某些轴承,船舶减摇鳍。美孚艉轴润滑油制定相对较高的粘度指数(VI)基础油,乳化剂,结构改性剂,表面活性剂,防锈剂结合。乳化容易与海水,形成稳定的油包水型乳液,粘合剂和良好的润滑剂。它提供了有效的防锈保护在海水中的存在下,使腐蚀保护在严酷的工作条件下,长时间保持润滑膜是耐水洗。

螺旋桨轴穿过船体,它被安置在船尾管轴承支持。三种不同类型的轴承,在这种应用中:1)铁梨木有填料箱的内侧和外侧没有密封,轴承,润滑海水。填料函的油脂或油润滑,如果被认为是必要的。2)的青铜或白色金属轴承具有不透油的橡胶密封件上的内侧和外侧的端部通常都充满了,很容易从水中分离的润滑油。汽轮机油,发动机油,液压油,所需的粘度一般建议。3)塞德瓦尔的类型,它是具有密封不漏油的内侧密封或填料箱和金属外侧密封不完全透油一个青铜或白色的金属轴承,需要与水的润滑剂,容易乳化。斯特恩美孚地铁润滑油已经制定,以满足这方面的需要。与Cedervall类型轴承的高粘度润滑剂一般被提供给位于水线之上,以使润滑剂是足够的压力下,以帮助除去水从轴承的轴承从重力罐。

最近的一个发展在船舶稳定剂是由布朗兄弟有限公司,威廉Denny和兄弟公司,AEG公司和德意志纬共同开发丹尼 - 布朗AEG稳定。在这些新的设计中,散热片安装在耳轴轴承允许其被向前折叠到存储盒在不使用时,船只船体。一个固定的轴延伸的症结耳散热片安装在此轴的两个轴承,允许鳍由液压的机制提供扶正运动,减少侧倾的船舶倾斜。通过重力在水线之上的症结耳轴的轴承的润滑的润滑剂泵的压送从位于从上水箱的散热片和散热片的内部的轴承进行润滑。

 

特点和优点

这三组中的稳定剂和船尾管轴承润滑的要求是足够的相似性,可用于所有这些使一个单一的,精心配制的润滑剂。表现令人满意,然而,润滑油必须有正确的粘度,流在重力作用下头,没有过多的快速流动,会导致高消耗,必须尽量减少下穿轴承中遇到的重物,必须保护轴承和其他组件腐蚀和乳化与任何海水,通过密封件,以维持润滑特性,并最大限度地减少腐蚀。

在船尾管应用中,润滑剂的消耗是一个主要问题,无论是从成本的观点出发,润滑剂和充满水箱所需的劳动成本。两个进行了长时间的船试航,美孚斯特恩管润滑剂了显着减少消费,以前的配方相比,至少低作为最具竞争力的产品。整个试验过程中,润滑是完全令人满意的。这些结果表明,斯特恩美孚地铁润滑油提供有效和低成本的艉管轴承的润滑。

主要特点和潜在的好处包括:

特点 优点及潜在效益
选择粘度 关键的稳定和有效的润滑艉管部件
良好的乳化性能 乳化随时保持润滑海水的存在
具有优良的防锈和防腐性能 保护关键轴承表面暴露于海水
多用功能 板上的所需润滑剂的数量减少
良好的粘度保持在严重的应用程序 有效的泄漏控制和减少石油消耗

 

应用

美孚建议其中高粘度,易乳化润滑剂制造商所建议的船舶的Cedervall型艉管轴承的润滑艉轴润滑油。此外,还建议鳍状物的轴承,以及丹尼 - 布朗AEG船稳定剂的症结耳轴轴承的润滑和批准由制造商在这些应用中使用。

 

规格与认可

美孚斯特恩管润滑剂具有以下制造商认可  
布朗兄弟公司,有限公司  
威廉Denny和兄弟有限公司  
AEG  
德意志纬  

 

典型属性

粘性  
CST @ 40?C 385
CST @ 100℃ 24
粘度指数,ASTM D 2270 82
倾点,?C,ASTM D 97,最大 10
闪点,?C,ASTM D 92分钟, 246
密度@ 15?C公斤/升,ASMT D 4052 0.915
API比重 23.1
防锈测试海水,ASTM D 1401 通过
铁姆肯咸水腐蚀试验 通过
乳液测试,ASTM D 1401  
乳液@ 60分钟,毫升 60
乳化特性 厚和稳定

 

健康与安全

根据现有资料显示,该产品预计不会对健康产生不良影响,拟申请使用时,提供的材料安全数据表(MSDS)的建议。材料安全数据表(MSDS)可应要求提供通过销售合同办公室,或通过互联网上http://exxonmobil.com中。此产品不应该被用于其拟定用途以外的其他用途。如果处理用过的产品,照顾,以保护环境。


埃克森美孚字型和美孚埃克森美孚公司或其子公司之一,其附属公司的注册商标。 

5-2013 

版权所有?2001-2013埃克森美孚公司。保留所有权利。

   

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