... This study investigates three different approaches for calculating alignment of a shaftline with water lubricated rubber bearings. The baseline model looks at a standard one dimensional (1D) analysis of a shaftline with rigid, knife-edge supports that is commonly used in the marine industry...

... The paper discusses the methodology for and performance improvements gained using the patent pending 100 Bond® Laser Babbitting Process developed by Wartsila Shaft Line Solutions. This process is currently being used at the Wartsila Iberica facility for commercial Line Shaft and Thrust Bearings...

... This paper examines the effect of dynamic propeller loads on the axial location of the knuckle point in a double sloped aft sterntube bearing (ASTB), as found in a typical marine slow-speed direct drive diesel engine powertrain. The so-called double sloped geometry is formed inside a bearing...

... Shafting Systems without a Forward Stern Tube Bearing: Advantages and Prevention of Failures Bruce Cowper, (FL), LamaLo Technology Inc. Zachary Schramm, (M), Consultant to LamaLo Technology Inc. Abstract In recent years shafting systems, particularly those powered by slow-speed diesel engines...

... Eliminating the Sterntube in New Deep Sea Ship Construction Author names: Mr. George A. Thomson (SNAME Fellow) 1 (AM) Mr. Kenneth Ogle, P. Eng. C. Eng., FIMarEST 1 (AM) 1. Thordon Bearings Inc. With water lubricated shafts, the point of sealing the shaft needed to be positioned for access...

... eal john thornhill bsc stern tube bearing installation lubricant propeller shaft requirement interface environmental law water lubrication leakage sea water bearing mineral oil water lubricated system stern tube legislation In recent times, there has been a change...

... vibration calculation case-3 propeller propulsion calculation case-1 diagram stiffness knowledge management rotor whirling vibration vibration analysis equation whirling vibration analysis vibration whirling vibration calculation shaft matrix bearing resonance Since 1869...

... installation calculation guidance hydrodynamic lubrication bearing stern tube bearing shaft alignment On December 19th 2013, the former Vessel General Permit (VGP) has been replaced by its second edition from the US Environmental Protection Agency (EPA). The 2013 VGP requires the use...

... flowline corrosion oilfield chemistry passenger transportation production chemistry corrosion inhibition materials and corrosion riser corrosion marine transportation ship upstream oil & gas well integrity bearing system thickness corrosion management shaft bearing bearing...

... Stern tube lubricants; used to lubricate the bearings that support the vessel propeller shaft in the stern tube, are continuously lost to the marine environment while the ship is moving under power. Although the specific amount of lubricant lost in a stern tube application is dependent...

... on a platform supply vessel. od shaft intermediate shaft inner ring amplitude subsea system fatigue failure speed range operation shaft upstream oil & gas shaft bearing fatigue strength stress concentration factor technical advisory marine transportation calculation stress amplitude...

... PTFE (Poly-Tetra-Fluoro-Ethylene) is a well-known bearing material used to provide low friction for water-lubricated shafts. Partial arc design bearings are attracting keen interest due to reduce friction, since it develops a hydrodynamic film even in water lubrication. However, the application...

... SKF Marine ISC was requested by STX Finland Oy, location Rauma to perform full scale dynamic propulsion shaft measurements on board of the RoPax vessel “Pride of France” in order to solve high shaft support bearing operational temperatures. After modeling the propulsion line with a state...

... in chapter 4 from the same author. This time the broad experience and design philosophy of such complete shaft lines shall be described and explained by using various samples of several successful applications. steel shaft steel tube diesel engine bearing shaft line input shaft application cft...

... shaft propulsion train vibration artificial intelligence calculation acceptance criteria calculation result propulsion reference line application maritime technology martin van leest alignment tolerance propulsion shaft calculation yuriy base model software bearing High-end Software...

...Performance of Stern Tube Bearings under Different Lubrication and Operating Conditions Jan H. Andersen (V)1 Hiroyuki Sada(V)2, and Seiji Yamajo(V)2 1: Det Norske Veritas AS, Høvik, Norway 2: Kobelco Eagle Marine Engineering Co. Ltd., Takasago, Japan ABSTRACT This paper presents the results...

... include shaft and propulsion coupling bolting as well as on anchoring and positioning bolting often required for most line shaft bearings, thrust bearings, and steering gears. Both a Finite Element Method (FEM) study and a shear test were recently performed to confirm superior load carrying ability...

... Over fifty years ago, ship owners moved from open water lubricated stern tube bearings to oil-lubricated white metal bearings. Improvements in sealing technology encouraged this move. White metal bearings in a closed oil system offered a proven technology, which provided for predictable...

... PTFE faced bearing technology, already established for hydro generator use, has been further developed for civil and military marine applications. The paper describes this type of bearing and the advantages compared with conventional babbitt. Details of testing and a description of a PTFE-faced...

... Market demands and development trends of the past 10 years have lead to an increase of the ship hull bending and simultaneously lowered the flexibility of the propulsion shafts. Optimum large bearing distances and pre-compensation of influences affecting alignment need to be considered...