It is not so common to see thordons in smaller vessels although they can be found in many hatteras. This newsletter includes feature articles highlighting our successes in the workboat industry with rivertough tailshaft bearings and tg100 shaft seals in both us inland waterways and around the world. High design pressure metallic bearings can be easily converted to thordon. The bearing length can be reduced by up to 50% compared to rubber bearings because thordon grades have a higher load carrying capability. If emptied, weight loss values would clearly increase 1%. Thordon is an electrometric polymer alloy that provides exceptional wear life. The agreement will create an action plan in which a specialist team, comprised of drydocks worlddubai. They showed virtually no wear on the id, lubrication grooves, and shafting after 2 minutes of dry running. This information is offered as part of our service to customers. Superior technical support and service provide customers with solutions that meet or exceed their expectations in many industrial applications. It is intended for use by persons having technical training and skill, at their discretion and risk. Marine bearings in river water, which tends to have significant suspended debris and sand, rudder bearings can be susceptible to rapid wear. Pollution free thordon operates completely grease free and applications can be sealed or open, water lubricated. May 06, 2017 thordon bearings and drydocks worlddubai ddwd signed an agreement under which the uaebased shipyard will work together with thordon bearings inc.
Elastomeric grades may be bonded to the clean surface. The final fully finished sizing of a thordon elastomer or thorplas bearing can be determined by using the thordon bearing sizing calculation program. When specifying and purchasing pump bearings, thordon is the proven choice for value and performance for both oem and maintenance water lubricated pump bearing applications. Characteristics and outline of waterlubricated thordon bearing. The contents cover basic designations for ball and roller bearing series and their prefixes and suffixes. Thordon bearings sizing calculation program allows you to calculate the maximum and minimum operating temperature for the final bearing size to be machined. The presentation which lasted 30 mins was designed to be. Seawater lubricated propeller shaft bearings pdf, 2. Nsk and rhp bearings designation systems the objective of this publication is to introduce and explain the designation systems used to identify nsk and rhp bearings. Find everything you need to know about thordon bearings on yellowpages. Workarounds include manually entering the merge field syntax in your pdf template or selecting excel for copy field format and removing the prepended. This is ideal in situations where high design load, point load or abrasive particles occur.
Extensive distribution network thordon bearings has an extensive distribution network to supply our global customers. Thorplas is a registered trademark owned by thordon bearings inc. Rmh industries is the exclusive authorized quebec distributor. Due to their tough, elastomeric properties, thordon composite bearings resist wear by tending to deflect, and then reject, abrasive particles allowing them to be flushed through the bearing without tearing away bearing material. Thordon shaft bearings not just for the big boats high. Thordon bearings coppedge marine is an exclusive, factory trained sales representative and stocking distributor for thordon bearings, inc. The lower line indicates the minimum clearances which we recommend where alignment is good and housing distortion low. Axialradial bearings axial angular contact ball bearings axialradial bearings axialradial bearings yrt, yrtc and yrts have an axial and a radial component. Thordon bearings arrive quickly, fit right and last. Esi alphatec is the official dealer for western australia for thordon bearings. Tp torrington tp thrust bearings have two flat hardened and ground steel washers with a cage retainer.
Thordon industrial plain journal bearings and wear pads have been successfully installed in a range of industries and applications including. Customer focused to quickly meet your needs extensive distribution network thordon bearings has an extensive distribution network to supply our global customers. The copy tool may not work in your browser when pdf is selected for copy field format. Thordon s webbased newsletter specifically developed for hydro and clean. A brief animation of how seawater lubricated compac propeller shaft bearings function. Trelleborg orkot marine bearings, composite bearings. Better than metal the simplicity and durability of our polymer bearing designs and systems provide a superior alternative to oil or grease lubricated metal bearings. For newbuildings, thordon bearings offers a 15 year bearing wear life guarantee unmatched by. Regardless of grade or configuration, thordon bearings do not require oil or grease lubrication in dry or wet conditions. We provide engineered solutions and offer worldwide technical support through an extensive distribution and service network. Thordon guarantees that sxl rudder bearings will meet classification society wear specifications for 15 years in all newbuild projects, or twice the life of the replaced non thordon bearing to a maximum of 10 years for repairs, or a new bearing will be supplied, free of charge. Water lubricated stern tube bearings are often used on modern ships.
Thordon bearings converts ships to seawater lubricated shaft. Thordon bearings propeller shaft bearing system bearing tips. One advantage with thordon bearings is the elimination of bearing squeal or, more technically, stickslip. The simplicity and durability of our polymer bearing designs and systems provide a superior alternative to oil or grease lubricated metal bearings. Jun 12, 2017 thordon bearings jacksonvillebased distributor coppedge marine has secured an order with tropical shipping for the compac seawater lubricated propeller shaft bearing system. The quality and accuracy of jacmor thordon bearings are assured as in 1995 jacmor successfully achieved iso 9001 quality assurance accreditation by lloyds register. Thordon bearings jacksonvillebased distributor coppedge marine has secured an order with tropical shipping for the compac seawater lubricated propeller shaft bearing system. More recently, commercial owners and managers, including major cruise ship operators, are also choosing compac for its pollution free simplicity and reliability. Fathom, the organiser of the prestigious ship efficiency awards 2015, has announced that thordon bearings compac seawater lubricated shaft bearing system has been nominated for the environmental technology award at this years event, which will take place during london international shipping week.
The debriefing may be provided in writing, by telephone or in person. Thordon bearing systems offer exceptional wear life, a low coefficient of friction and can be. The company reserves the right to change or amend any specification without notice. To download the thordon bearing sizing calculation program version 2017, release 10, a user registration is required. Only for 20 seconds running ar bearing materials proved to have good dryrun capability. Utilizing thordon, a unique polymer alloy as the bearing wear surface, thordon bearing systems offer exceptional life and performance. Expand your understanding of bearing technology in our library of technical papers, product literature and. Bearings identitging and correcting causes of bearing faihue. Thordon xl, sxl, hpsxl and composite gm2401 are thordons elastomeric bearing grades that offer exceptional wear life, low friction and excellent. Precision ball bearings are designed to have a long and useful iie. Thordon bearing systems offer exceptional wear life.
This is further evidence of jacmors dedication to providing our customers with only the best in water lubricated bearings, rudder bearings, propeller shaft bearings and more industrial bearings. Thordon bearings is a family business started in 1911 with factories in canada and poland. Fathom, the organiser of the prestigious ship efficiency awards 2015, has announced that thordon bearings compac seawater lubricated shaft bearing system has been nominated for the environmental technology award at this years event, which will take place. Type of installation thordon bearings can be freeze or press fitted.
Thordon bearings are lubricated with water or operate dry so you eliminate the costs of purchasing, storing and disposing of oil, grease and eals. How a thordon compac stern tube bearing works youtube. Thordon bearings designs and manufactures the most complete line of oil and greasefree vertical pump bearings in the industry. The axial component comprises an axial needle roller or cylindrical roller and cage assembly, an outer ring, lsection ring and shaft locating washer and is axially preloaded after fitting. In dirty water applications, performance is superior to rubber and provides long wear life and high abrasion resistance. Thordon bearings inc august 2016 10 prior to 1950, all ships operated with a seawater lubricated propeller shaft bearing system. Our engineering expertise has earned waukesha bearings a strong reputation for achieving lasting performance when others cannot. Thordon bearings founder and polymer materials pioneer george. Thordon bearings marine bearings thordon bearings, a pioneer in the development of pollution free bearing designs, offers. Thordon marine supply, all thordon marine suppliers. The compac systems destined for two 300teu environmentallycompliant box ships under construction in china, at the guangzhou huangpu wenchong shipyard, will represent a first reference for compac with this shipowner. Thousands of customers across the world, in both rehabilitation and new turbine projects, know thordon bearings is the proven choice for performance and value. Industryuptime is proud to offer thordon bearings for your industrial pump and commercial and military marine applications. Thordon bearings has received an order to supply a waterlubricated propeller shaft bearing solution to fincantieris monfalcone shipyard for installation to msc seashore, the third seaside class cruiseship to which thordon s compac system has been specified.
Bearing squeal is sometimes found with rubber bearings on stainless prop shafts when the shafts are turning extremely slowly. Thordon bearings designs and manufactures a complete range of polymer bearing. Two types of cylindrical roller thrust bearings, tp and tps, are available from torrington. Thordon is a very hard, tough synthetic polymer alloy that has performance characteristics superior to those of most other bearing materials, both metallic and nonmetallic. Thordons compac system is available alternative to conventional oil lubricated stern tube. The compac systems destined for two 300teu environmentallycompliant box ships under construction in china, at the guangzhou huangpu wenchong shipyard, will represent a first reference for compac. Pdf water film stiffness and damping analysis of water. Thordon bearings provide long life and offer a unique combination of low friction, high elasticity and good mechanical properties abrasion and shock resistance. Polymeric materials for bearing applications diva portal. Thordon has developed a range of proprietary polymer journal bearing solutions for different applications and operating environments. Thordon bearings is a member of the thomsongordon group established in 1911 with our head office in burlington, ontario, canada. Thordon bearings zeropollution systems eliminate stern tube oil and the aft seal. Thordon s strong global brand is known for high quality and superior performance.
Thordon sxl offers long bearing wear life that reduces maintenance costs. Thordon elastomer grades offer the best combination of strength and stiffness with flexibility and elasticity, along with high abrasion resistance. The thordon composite bearing outperformed the previous cutless rubber bearing by a factor of approximately 2 times. Princess cruises has specified thordon water lubricated compac propeller shaft bearing systems for. Thordon compac bearings are available in either full form tubes or split carrier configuration depending on the design requirements. It also allows you to calculate the allowances for axial water swell and thermal expansion if applicable.
Thordon bearings are available in the range of fully finished watergrooved. The category of materials used in waterlubricated bearings was briefly outlined and tribological characteristics of most of the materials were compared in the paper. Our territory consists of florida, georgia, alabama, south carolina and the bahamas for marine applications. Thordon bearing solutions have proven their value and performance in many industrial applications over the years. Since bearing clearance is the sum of both bearing wear, and wear of the shaft liner, a high quality shaft liner is an important component of a compac bearing system. Elastomeric bearings thordon bearings introduced a proprietary, elastomeric, synthetic polymer alloy more than 30 years ago originally for use as a sleeve bearing for vertical pump applications. High abrasion resistance thordon tends to deflect and then reject abrasive particles allowing them to pass through the bearing without becoming embedded. Thordon has developed two types of polymer bearings and several grades that allow selection of the optimal bearing for your unique application. Open, seawater lubricated bearing options include thordon compac, rivertough, sxl and xl.
Thordon s propeller shaft bearings include compac, sxl, xl and rivertough elastomer grades each offering specific advantages in different water. Transformer sizing calculation pdf in titlesummary thordon bearings sizing calculation program it also allows you to calculate the allowances for axial water swell and thermal expansion if applicable. In addition to assisting in bearing identification it helps to cross refer. With vesconites low wear, selflubrication, and easy installation, its the ideal material for this application. Jacmor engineering invited to present thordon elastomeric bearings recently josh sayed jacmor thordon techincal manager was invited to deliver a technical presentation on elastomeric bearings systems by a joint venture of australias leading industrial and marine industries incorporated with universities. Thordon bearings, a pioneer in the development of pollution free bearing designs, offers a variety of choices of seawater lubricated propeller shaft bearing systems for all water conditions. Thordon bearings are designed to work under the most extreme conditions. Thordons oil and greasefree polymer bearings and seals require minimal maintenance. Thordon sxl self lubricating bearings have set the standard in rudder bearing technology and. Thordon xl our traditional standard propeller shaft bearing grade, thordon xl is a general purpose bearing offering superior performance compared to other bearings commonly used in propeller shaft. Pdf waterlubricated bearings have found widespread application in vertical and horizontal. Assuming the application is correct to begin with, maximizing longevity means bearings must be properly installed, lubricated and maintained. Coppedge marine is an exclusive, factory trained sales representative and stocking distributor for thordon bearings, inc. The minimum recommended bearing clearance for an orkot marine rudder bearing can be established using igures 2 f and 3.
Axialradial bearings axial angular contact ball bearings. Thordon bearings designs and manufactures a complete range of high performance, nonmetallic journal bearing solutions for marine, pump, hydroturbine, offshore oil and other industrial markets. Thordon bearings company descriptions thordon bearings inc. Thordon s webbased newsletter specifically developed for marine users of oilfree and greasefree bearings in the workboat sector. Avoiding shaft seal oil leaks a return to seawater lubricated propeller shaft bearings 2015 thordon bearings inc. Enquire thordon marine suppliers on shipserv pages, the worlds number one marine supply directory.
More than 70 distributors in 100 countries carry extensive inventories of thordon s common bearing sizes which are backed by large regional and head office inventories. Originally developed over 30 years ago for use as a high performance pump bearing. More than 85 distributors in 100 countries carry extensive inventories of thordon s common bearing sizes which are. With over 40 years experience supplying nonmetallic bearings to many different industries, thordon bearings designs and manufactures a complete range of high performance, environmentally friendly journal bearing solutions for water pump, hydroturbine, offshore oil as. Thordon elastomeric bearing material is made from thermosetting resins which are three dimensional, crosslinked condensation polymers. Thordon bearings recommends shaft liners made from a bronze, stainless steel or inconel alloys. Thordon bearings sizing calculation program free download. Through ongoing research and development, we continue to expand bearing capabilities and improve performance. Depending on the application, the optimal bushing will be selected from the various grades offered by thordon. For 14 years, sandy captained the vessel, visiting more than 200 international ports promoting polymer bearings to the industry. Installing compac propeller shaft bearings for canadian navy halifax class frigates and aor duration.
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