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G R E A S E - F R E ER U D D E R B E A R I N G S
Thordon Rudder Brochure_A4_FINAL:Thordon Rudder A4 3/12/09 12:40 PM Page 1
PROVEN RUDDER BEARINGDURABILITY AND
GUARANTEED PERFORMANCEFROM THE PIONEERS IN
POLYMER BEARING TECHNOLOGY
Reliability, long wear life and superior customer service have made Thordonthe first choice in pollution free rudder bearing applications for over 35 years.Thordon SXL self lubricating bearings have set the standard in rudder bearingtechnology and are recognized internationally as the proven choice for value,performance and complete freedom from water pollution concerns for both newconstruction and conversions.
For newbuildings, Thordon Bearings offers a 15 year bearing wear life guaranteeunmatched by any other rudder bearing supplier. Ship owners and managers thatspecify Thordon SXL rudder bearings understand total life cycle cost is much moreimportant than initial purchase price. With a worldwide distribution network fromSeattle to Halifax to Portugal to Dubai to Shanghai, Thordon rudder bearings can bedelivered fast to any ship repair facility in the world.
Once customers have experiencedthe performance of the product,technical support and after-salesservice from Thordon Bearing andtheir extensive distribution network,they stay with Thordon.
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Thordon Bearings, a world leader in
elastomeric polymer bearing technology
advancements since the 1970’s, recommends
SXL, an advanced polymer alloy with a low
coefficient of friction offering total freedom
from grease for all rudder bearing
applications above and below the waterline.
In addition to SXL pintle, stock and carrier disc
bearings, HPSXL TRAXL or Thordon's new
thermoplastic product, ThorPlas® can be
specified grease free in steering and linkage
applications as well as fin stabilizers. Thordon
has also developed a new high performance
rudder stock seal to complement the Thordon
rudder bearing package.
GOOD FOR THE SEA. GOOD FOR BUSINESS. GOOD FOR LIFE.
Thordon Rudder Brochure_A4_FINAL:Thordon Rudder A4 3/12/09 12:40 PM Page 3
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Thordon SXL rudder carrier diskbearing.
Installation of SXL bearing intohousing.
Installation of keeper ring asSXL bearing warms.
ThorPlas steering and linkagebearings.
SXL CarrierBearing
SXL Bearing
ThorPlas®orHPSXL TRAXL
Thorwiper
Thorseals
SXL PintleBearing
Thorseals
Thordon Rudder Brochure_A4_FINAL:Thordon Rudder A4 3/12/09 12:41 PM Page 4
ThorPlas® Steeringand Linkage BearingsThorPlas® is a proprietary engineeredthermoplastic designed to withstand radialloads as high as bronze ( working pressuresup to 31 MPa or 4500 psi ) in dry or wetapplications. ThorPlas® offers reduced wear,and eliminates the need for grease, whenspecified in place of bronze bushings insteering linkage and hydraulic cylinder yokeapplications. A separate detailed brochureon ThorPlas® is available.
Thordon Rudder Stock SealsThordon’s high performance rudder stock lipseal is manufactured from the tough, selflubricating Thorseal polymer to complementthe Thordon rudder bearing package. Thordonrudder stock seals are mounted above therudder bearing to prevent the ingress of waterinto the hull. Designed to provide positivesealing and exceptional wear life these rudderstock seals take into account the largerbearing clearances and movements inherentto rudder stocks. The standard series ofThordon Rudder Stock Seals covers ruddershaft diameters from 200mm (8 in.) to1200mm (47 in.). Special designs are availablefor small rudder stocks or where space isrestricted. Thordon Rudder Seals can also beincorporated into fin stabilizers.
Thorseal Hydraulic SealsThorseals are tough, high performance,polymer lip seals that offer positive sealingover a pressure range from 0 to 100 MPa(15,000 psi). Manufactured from a tough selflubricating polymer, Thorseals provide longwear life with no need for periodicadjustments, resists tearing and extrusionand, as a result of built-in lubricants, operatewith less drag and reduced cylinder wear.Custom sizes up to 1.5m (60”) diameter canbe produced quickly from factory stock tubes.
5
ThordonSeal
ThordonSeal
Thordon RudderStock Seals
SXL UpperStock Bearing
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GUARANTEED LONG BEARINGWEAR LIFE
Thordon SXL has the longest bearingwear life for newbuild vessels andprovesit by offering a 15 year bearing wear lifeguarantee for all newbuild vessels. Theguarantee is based on 35 yearsexperience of bearings typically lastingthe life of the vessel. Thordon is the onlymanufacturer to offer this guarantee.
Thordon is an elastomer.Whenoperatingin water with abrasives present, SXLtends to deflect and then reject abrasiveparticles allowing them to pass throughthe bearing without being embedded orgouging (as can be the case withphenolic laminates or bronze bearings),thus bearing wear is minimized. Inconversion applications, Thordon SXLrudder bearings are guaranteed to meetClasswear specifications for twice the lifeof anon-Thordonbearingbeing replaced,up to a maximum of 10 years.
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What Makes Thordon Different
SXL Offers These Owner Benefits:
Thordon’s 15 Year Rudder Bearing Wear Life Guarantee ensures provision ofa replacement if a Thordon SXL rudder bearing wears out and requiresrenewal before the 15-year period.
The guarantee covers pintle, rudder stock and carrier disc bearings aboveand below the waterline in newbuild Classed vessels. The 15-Year RudderBearing Wear Life Guarantee applies to the original owner of the ship and isnon-transferable. Engineering details such as Classification Society, vesselname, ship owner’s name the guarantee will apply to, rudder specificationsetc. will be required prior to issuing the guarantee.
Thordon continues to offer its repair/conversion guarantee as well. Inconversion pintle, stock or carrier applications, Thordon SXL rudderbearings are guaranteed to meet Classification Society wear specificationsfor twice the life of the non-Thordon bearing replaced, up to a maximum often years, or Thordon Bearings will supply a new rudder bearing free ofcharge.* The guarantee is subject to prior approval by Thordon Bearings Inc. and limited to the supplyof replacement bearing(s).
15 Year Rudder BearingWear Life Guarantee*
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HIGH SHOCK ABSORPTION
SXL absorbs impact loads making itmuch more resistant to damage frompounding during operation in heavyseas than stiffer materials such asphenolic laminates or bronze.Feedback from shock tests by the U.S.Navy (CVN Aircraft Carriers) showedthat Thordon SXL was deemed asuperior product compared to phenoliclaminates. The inherent impactresistance of the material also meansthat it is almost impossible to damageduring shipping and installation.
TOLERANCE TO EDGE LOADING
Under shaft bending or misalignmentconditions, Thordon SXL will betteraccept edge loading than phenoliclaminates or bronze. During edgeloading, Thordon SXL will deformslightly, due to its visco-elasticproperties, conforming to the shaftthereby preventing binding. Stresseson the bearing and shaft are reducedcompared to a harder stiffer material,such as a phenolic laminate or bronze.
TECHNICAL AND CUSTOMERSUPPORT
Thordon has experienced Technical andAfter-sales Service departments aswell as a global network of 70+ factorytrained distributors to assist customerswith any pre- or post-sales concerns.Most shipyards in the world arefamiliar with Thordon and comfortableworking with it.
EASY MACHINING ANDHANDLING
Thordon SXL machines cleanly andproduces no machining dust. It is moreforgiving of small machining errors thanmore rigid materials. SXL is lighter thanbronze and phenolic laminates and canbe fitted quickly and easily by freezingin liquid nitrogen.
SELF LUBRICATING =ZERO POLLUTION RISK
Grease or other lubricants are notrequired to lower the coefficient offriction or to reduce the wear rate of aThordon SXL bearing. In rudder stockapplications, even when the bearing isout of the water and completely dry,Thordon SXL can operate withoutlubrication. Thordon SXL rudderbearings ensure ship owners and
operators that there will be noenvironmental violations from leakingrudder lubricants.
AVAILABILITY
By combining an extensive stockingdistributor network and strategicallylocated corporate stocking points,Thordon can provide rudder bearingsquickly to any ship repair facility in theworld.
DIMENSIONING
Thordon has an easy to use computerbased dimensioning program which isavailable to yards or owners onrequest.
EXTENSIVE REFERENCES
Since the first Thordon rudder bearinginstallation in 1970, Thordon has beensupplying rudder bearings to the worldfleet amassing over 35,000 vessel-years of rudder bearing experience.
CLASSIFICATION SOCIETYAPPROVALS
Thordon SXL rudder bearings areapproved by most ClassificationSocieties. Approved pressure is in therange of 10-12 MPa (1450-1740psi).
7
Circ
umfe
rent
ialC
onta
ct
Contact Length
TYPICAL EDGE LOADING PROFILE
BronzeTypical Non-MetallicThordon SXL
DSME (DAEWOO SHIPBUILDING ANDMARINE ENGINEERING CO., LTD.) has fitted Thordon SXLrudder bearings to new ships since 1984 and has never had a customer claim.
DUBAI DRYDOCKS, the world’s largest tanker repair yard, has been fitting Thordon SXL rudder bearings in repair formore than 20 years. They fit more Thordon rudder bearings than any other material. In the 20 years that Dubai Drydockshave been working with Thordon, they have never encountered a worn out Thordon bearing.
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Customer Focused To SupportYour Immediate And Future Needs
TBIRA403/096000BC
PRINTED IN CANADA
ISO 9001:2000CGSBRegistration #93649
Supply and Service: Geared to provide quickresponse to customer needs, ThordonBearings understands the importance of fastdelivery and reduced down time. Thordonmarine bearing systems can be designed,produced to the exact requirements of thecustomer and shipped quickly.
Distribution: With Thordon bearingsspecified all around the world, an extensivecustomer service network has beenestablished in over 70 countries. Inventoriesof common bearing sizes are stocked by localThordon Distributors and are backed up bylarge regional andheadofficeThordon stocks.
Application Engineering: ThordonBearing’s engineers work closely withcustomers to provide innovative bearingsystem designs that meet or exceed thetechnical requirements of the application.
Manufacturing: Thordon’s modernpolymer processing facility is staffed withexperienced and dedicated employees.Bearings up to 2.2 m (86") in diameter havebeen supplied and bearings up to 1.5 m(60") O.D. can be machined in-house.
Quality: Thordon Bearings Inc. is aCanadian company manufacturing to ISO9001:2000 Quality System requirements.With over 35 years experience inelastomeric bearing design, applicationengineering and manufacturing, Thordonmarine bearing systems are recognizedworldwide for both quality and performance.
Research and Development: Thordonbearings are being continuously tested by ourBearing Test Facility. The Facility evaluatesnew designs and applications before they areput into service. Ongoing testing not onlyallows for design refinements, but ensuresquality and performance after installation.Our polymer laboratory evaluates new andmodified polymers in a continuing quest toimprove Thordon bearing performance andsearches for new polymer bearing solutions.
Your local Thordon Distributor
3225 Mainway, Burlington, Ontario L7M 1A6 Canada
Tel: (905) 335-1440 Fax: (905) 335-4033
E-mail [email protected]
www.thordonbearings.com
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