Bearings

  • In the last few decades, the maritime industry has faced increasing pressures to perform with less and still earn a profit.

    Fuel costs have skyrocketed. Labor costs have risen dramatically. Down time for repairs has cut into profit margins.

    Marine engineers and maritime operators have been looking for ways to make repairs more efficiently so they can streamline their operations and maximize their personnel and equipment.

    Craft Bearing Company, Inc. has an answer.

    Craft Developed A Better Bearing Design Craft Bearing was founded with one goal in mind: to make world class split cylindrical roller bearings. Through American ingenuity, craftsmanship and pride in service, Craft Bearing has accomplished that goal.

    Before Craft went into production, it spent years of exhaustive research and development to create a superior split bearing design. First, it made sure that its roller bearings had all the inherent features of conventional anti-friction cylindrical bearings; it then took the next important step of engineering and precision machined the entire bearing, seals and housing assembly into halves. All bearing parts can be easily separated and installed or removed from the shaft without removing the other components.

    Repair cost and down time is greatly reduced. The result is a better bearing for the maritime industry that is answering today's marine engineering needs.

    Craft Builds Many Improvements Into Its Bearing Craft's external self-aligning cartridges and pedestal/flange housings are machined from ductile iron for greater tensile and yield strength. Craft then uses a baked-on powder coating instead of a painted coating for a greater resistance to the elements and chemicals. Their innovative and patented roller cage assembly (made out of bronze on large and heavy duty sizes) has a fitted pocket for the rollers. This design assures the precise radial alignment of the rollers is maintained for maximum load characteristics and durability. In addition, the cage provides lubrication pockets, which further improve the bearing life. Featuring a black oxide finish, each clamp collar fits with precision forming the roller track.

    For sealing, Craft provides an aluminum triple labyrinth design that clamps to the shaft using a double "O" ring in the bore. The seal rotates with the shaft providing positive seal against the elements while not causing shaft or seal wear.

    Craft's Product Line Continues to Expand Craft Bearings are available in three duty ratings (SI, S2, S3) to best suit load, speed, and life requirements.

    Bearings are available from 1 7/16 to 32" bore and metric equivalent. Craft provides its customers with same day shipping on bearings through 12 "/300 mm for its SI and S2 series and prompt responses on larger sizes and special custom orders. Introduced early in 2002, Craft's Stainless Steel Split Pillow Blocks are manufactured with stainless steel housings, cartridge and hardware for use in harsh conditions that other bearings could not withstand. Craft's continued dedication to product improvement through research development and testing keeps it a leader in bearing design.

    Craft Flange Bearings Prove Highly Effective in Marine Industries The Marine Industry not only needs bearings that are both highly reliable and easily maintained, it needs bearings that can be installed in a variety of mounting situations.

    To meet that need, Craft engineers have developed Flange Housings that are proving themselves to be valuable on propulsion shafting for such vessels as high-speed ferries, passenger car ferries, tow boats, and many other applications where flanges allow more efficient mounting than pillow blocks.

    Over the past few years, the company has produced flange bearings across all product sizes from 2 3/16" thru 12" and they are increasing their stock on a regular basis.

    Craft's Clients Realize Immediate Benefits Craft's American-made split roller bearings are built to last longer, making them extremely reliable bearings for marine propulsion shafting, conveyors, deck machinery and fans. America's pilots appreciate Craft's dependability under heavy use in all sorts of weather and sea conditions. Engineers value the ease of maintenance and at sea repair.

    Craft's split roller bearings have greatly simplified and expedited both bearing inspection and bearing change out. Also, the bearing can be left in place for easier inspection and far easier replacement without disturbing ancillary equipment or shaft alignment. As a result, ship owners and captains benefit from the savings in reduced downtime between repairs.

    Craft Takes Customer Service To A Whole New Level Another important difference with Craft is its absolute commitment to customer service. While some companies may not be responsive to their customers' needs, Craft is committed to providing technical support and customer service that is second to none.

    I hrough careful inventory control, its employees ensure same-day shipping for standard bearings at no extra charge and rapid response for special applications and custom bearings. In addition, Craft's experts are always available so customers who need assistance can talk to a human being, not a machine.

    The Experts Pick Craft Over the years, Craft has received important recognition for its American made split bearings. Their split roller bearings are approved by the Department of Defense and is the only split roller bearing that is Lloyds Register i: i: i, 1 / I1!: i CRAFT Type Approved. Also, their bearings are directly interchangeable with foreign split bearings.

    Craft Forges Ahead With American Craftsmanship Relying on American know-how, Craft Bearing has staffed its facility in Newport News, Virginia, with top American engineers, machinists and workers who take great pride in their work. After setting high standards for excellence, it has rigorously trained all of its employees to meet these standards. As a result, Craft consistently delivers high quality split bearings on time. The American-made Craft Split Roller Bearings are fast becoming the industry standard in marine applications worldwide. Over the years, Craft Bearings have proved their reliability and dependability time and time again.

    For more information on specific applications, visit www.craftbearing.com or call 757-247-6000 or Circle 199 on Reader Service Card.

    Craft spiit bearing on a propulsion shaft. www.maritimereporterinfo.com

  • conditions, dredging operations arguably pose the toughest challenge to any class of marine equipment. Water lubricated Thordon Composite cutterhead shaft bearings have reportedly performed well for nine years on one of the largest cutter suction dredgers in the world –Dredging, Environmental and Marine Engineering

  • prestigious MN100 edition - MarineNews' annual look at the best 100 individuals and firms in the shallow draft, brown water and workboat sectors - Thordon Bearings has been on the leading edge of environmental improvements for the marine industry for many years.  The Case:Thordon has invested heavily in the inland

  • to EALs in all oil-to-sea interfaces before their next drydocking, it is an arguably good time to be in the lubricants business. At the same time, Thordon Bearings, a manufacturer of seawater lubricated bearings for the marine industry has its own thoughts on that very topic. Specifically, Craig Carter, Thordon

  • 3225 Mainway Burlington, State ON Canada L9C5J8 Tel: (905) 335-1440   Email: [email protected]  Website: www.thordonbearings.com President & CEO: Terry McGowan The Company: Thordon Bearings Inc. designs and manufactures a complete range of polymer bearing and shaft line products for

  • Thordon Oil Free Propeller Shaft Bearings and Grease Free Rudder Bearings for Workboats produce two kinds of green. The final 2013 EPA VGP language is out. If you’ve got a Controllable Pitch Propeller and Thruster Hydraulic Fluid and other Oil-to-Sea Interfaces, including Lubrication Discharges from Paddle

  • —Literature Available According to Jim Murphy, senior vice president of Georgia Transporter, Panama City, Fla., Cutless® Commander™ water-lubricated bearings from L.Q. Moffitt offer a distinct improvement over some other bearings in the gritty, silty waterways that his pushboats operate. Georgia Transporter

  • of their limited use. Floor rails were also considered and rejected because of the desire for flexibility of movement and an unencumbered floor. Air bearings were finally selected for their limited load-bearing capacity, clean opera- tion, omnidirectional travel, and low cost, according to company officials

  • The complete line of Cutless® brand rubber bearings is the subject of a new two-color, four-page brochure from BFGoodrich of Akron, Ohio. Featuring an exclusive water wedge design and broad application flexibility, Cutless rubber bearings are a product of years of research and development by BFGoodric

  • The complete line of Cutless® brand rubber bearings is the subject of a new two-color, four-page brochure from BFGoodrich of Akron, Ohio. Featuring an exclusive water wedge design and broad application flexibility, Cutless rubber bearings are a product of years of research and development by BFGoodric

  • delivered to Harvey, La.-based operator L&L Marine Transportation in June is now operational with a full range of Thordon oil-free and grease-free bearings.Designed by Entech, the 65-foot twin-screw towboat Amelia Ray is purpose-built by Rodriquez Shipbuilding in Coden, Ala. for the transportation of

  • , requiring a long drive shaft connecting the power output to the upper gearbox of the z-drives. Supporting the drive shaft are spherical double row bearings, in pillow block housings.    The operator experienced bearing failure and high operating temperatures in the shaft support bearings. In September

  • MR Feb-24#33 EAL  AND STERN TUBE DAMAGES
STACKING 
not forget any oil)
    February 2024 - Maritime Reporter and Engineering News page: 33

    EAL AND STERN TUBE DAMAGES STACKING not forget any oil leak, big or small, can be catastrophic to the marine environment and marine life, with some EALs found to THE DECKS be only slightly less damaging than the phased-out traditional WITH BEST-IN-CLASS MARINE oils,” said VP of Business Development

  • MR Feb-24#32  water-lubricated stern tube bearings stand 
out for its longevity)
    February 2024 - Maritime Reporter and Engineering News page: 32

    better weather forecasts and improved marking and tracking of ? shing gear. President Bob Shortridge says Lignum Vi- tae’s water-lubricated stern tube bearings stand out for its longevity and shock resistance. The company places a strong emphasis on address- ing the issue of high bearing wear, particularly

  • MR Feb-24#31  out. Manufacturer Pa- stern bearings had overheated due to)
    February 2024 - Maritime Reporter and Engineering News page: 31

    are not intrusive.” they were recently called out to, it was discovered that the Current sentiment seems to bear that out. Manufacturer Pa- stern bearings had overheated due to loss of lubricating ? uid. nolin noted strong support for EALs at a 2023 trade show. This caused the bearing faces to become

  • MR Feb-24#30 , where aft stern 
tube bearings typically failed under)
    February 2024 - Maritime Reporter and Engineering News page: 30

    . The ? rst, starting E in 2013 was early life damage, either during sea trials or within the ? rst ? ve years of operation, where aft stern tube bearings typically failed under extreme load conditions. Then from around 2018, vessels of about 10 years of age and above started experiencing bearing damage

  • MN Feb-24#48 .com  (906) 863-5553
5 Thordon Bearings    www.thordonbearings)
    February 2024 - Marine News page: 48

    NOAA/Eastern Region Acquisition Division MarinerHiring.noaa.gov (833) 724-5872 C4 R.W. Fernstrum & Company www.fernstrum.com (906) 863-5553 5 Thordon Bearings www.thordonbearings.com Please visit our website The listings above are an editorial service provided for the convenience of our readers. If you

  • MR Dec-23#35 Royal Caribbean Group
I      SCON OF THE EAS
natural gas)
    December 2023 - Maritime Reporter and Engineering News page: 35

    Royal Caribbean Group I SCON OF THE EAS natural gas (LNG), and the ship also utilizes fuel cell tech- The ship features the largest waterpark at sea, with six nology for some of its onboard power needs. According to slides, as well as nine whirlpools and seven pools on board, Royal Caribbean, this

  • MN Nov-23#64 .com (206) 767-6000
9 Thordon Bearings    www.thordonbearings)
    November 2023 - Marine News page: 64

    .ca Visit us online 21 Schoellhorn Albrecht www.schoellhorn-albrecht.com (314) 965-3339 29 SEATAC Marine www.seatacmarine.com (206) 767-6000 9 Thordon Bearings www.thordonbearings.com Please visit our website 25 Timberland Equipment Limited www.timberlandequipment.com (519) 537-6262 1 United Safety /

  • MN Jun-23#48   (781) 639-9065
5  Thordon Bearings    www.thordonbearings)
    June 2023 - Marine News page: 48

    Rhotheta International Inc www.rhothetaint.com/marine (954) 495-8700 31 Ribcraft USA LLC. www.ribcraftusa.com (781) 639-9065 5 Thordon Bearings www.thordonbearings.com Please visit our website 15 Timberland Equipment Limited www.timberlandequipment.com (519) 537-6262 1 United Safety

  • MR Aug-23#57 Tech Files
Tools
MarineShaft Resolves Shaft Bearing)
    August 2023 - Maritime Reporter and Engineering News page: 57

    Tech Files Tools MarineShaft Resolves Shaft Bearing Failure A chemical tanker suffered a bearing failure off the coast of Sweden, and subsequently the ship was towed to Denmark and lay at anchorage of Skagen. Danish-based mechanical machine workshop MarineShaft, which specializes in class-approved cold

  • MR Jun-23#24  error, gyro error, turn bearings and dead  tion, laying)
    June 2023 - Maritime Reporter and Engineering News page: 24

    them. We learn how to compute and apply set ence as a Navigator. The required tasks of ? xing my posi- and drift, compass error, gyro error, turn bearings and dead tion, laying out track lines and creating voyage plans were reckoning. It’s where we learn about chart scales and the tasks I was already

  • MR May-23#64  825 335
5 . . . . . .Thordon Bearings, Inc . . . . . . . .)
    May 2023 - Maritime Reporter and Engineering News page: 64

    . . . . . . . . . . . . . . . . .www.seawork.com . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 1329 825 335 5 . . . . . .Thordon Bearings, Inc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .www.ThordonBearings.com/Seawater . . . . . . . . . . . . . . . . . . .Please visit

  • MN Apr-23#48 .org  (800) 344-9077
1 Thordon Bearings    www.thordonbearings)
    April 2023 - Marine News page: 48

    Visit us online 11 Seawork www.seawork.com 44 1329 825 335 35 Society of Accredited Marine Surveyors www.marinesurvey.org (800) 344-9077 1 Thordon Bearings www.thordonbearings.com Please visit our website 15 Timberland Equipment Limited www.timberlandequipment.com (519) 537-6262 7 Volvo Penta Americas

  • MR Feb-23#12 Back to the Drawing Board 
Only One Stupid T  ing at a)
    February 2023 - Maritime Reporter and Engineering News page: 12

    Back to the Drawing Board Only One Stupid T ing at a Time By Rik van Hemmen his story spans for modern day en- a long period of gineering, although T time, but begins “you shall not steal with a note I received and not bearing recently on an earlier false witness” cer- column from a reader tainly

  • MN Feb-23#48   44 1329 825 335
1 Thordon Bearings     www.thordonbearings)
    February 2023 - Marine News page: 48

    .com (504) 780-8100 C4 R.W. Fernstrum & Company www.fernstrum.com (906) 863-5553 7 Seawork www.seawork.com 44 1329 825 335 1 Thordon Bearings www.thordonbearings.com Please visit our website The listings above are an editorial service provided for the convenience of our readers. If

  • MR Dec-22#29 GREAT SHIPS
of 2022
James R. Barker. “Designed to navigate)
    December 2022 - Maritime Reporter and Engineering News page: 29

    GREAT SHIPS of 2022 James R. Barker. “Designed to navigate the winding curves of the Cuyahoga River, built with Cleveland-Cliffs steel and coated with Sherwin-Williams paint, the M/V Mark W. Barker Greg Trauthwein was most signi? cantly built as part of a long-term partnership to move Lake Erie-mined

  • MR Dec-22#15  Tower, upper and 
lower bearings, and the electrical drive)
    December 2022 - Maritime Reporter and Engineering News page: 15

    Sails are the “Rotor” ings for retro? ts and even greater savings for newbuilds. (the cylindrical, rotating part), the support Tower, upper and lower bearings, and the electrical drive system. The Rotor is built from lightweight composite material and the Tower is a steel column structure. The Rotor Sails

  • MT Nov-22#31 Burnett says one of the goals was real-time processing to)
    November 2022 - Marine Technology Reporter page: 31

    Burnett says one of the goals was real-time processing to get real-time informa- tion about what’s in the water. This meant signal processing and software integra- tion into the glider, but, with the longer array, also improving the power supply to reduce noise. WITH NEW GAP FILL SONAR “We were able to

  • MR Nov-22#53  monitoring the condition of 
bearings of large marine diesel)
    November 2022 - Maritime Reporter and Engineering News page: 53

    coal car- the pump requires a drive system producing up to 14kw. rier Noshiro Maru. The certi? ed CBM is a method for monitoring the condition of bearings of large marine diesel engines through temperature data, a method that was adopted in the “CBM Guidelines, Sec- ond Edition”4 issued by ClassNK

  • MN Nov-22#80 .com  (704) 347-4910
7 Thordon Bearings    www.thordonbearings)
    November 2022 - Marine News page: 80

    .com (314) 965-3339 57 SEATAC Marine www.seatacmarine.com (206) 767-6000 9 Sennebogen LLC www.sennebogen-na.com (704) 347-4910 7 Thordon Bearings www.thordonbearings.com Please visit our website 33 Walker Engineering www.walkerairsep.com (818) 252-7788 C2 ZF Marine Propulsion Systems

  • MN Nov-22#47 Feature
Great Vessels of 2022
Greg Trauthwein
box. The is)
    November 2022 - Marine News page: 47

    Feature Great Vessels of 2022 Greg Trauthwein box. The is also equipped with 1,000 hp Kongsberg bow and stern thrust- ers. The ship is reported to have a top speed in excess of 15 knots, though it can cruise somewhere around 13.5. For added ef? ciency, the ship’s hull has been optimized and all systems

  • MN Nov-22#45 Feature
Great Vessels of 2022
he Interlake Steamship)
    November 2022 - Marine News page: 45

    Feature Great Vessels of 2022 he Interlake Steamship Company’s newest ves- in Minnesota by Cleveland-Cliffs, and carried on U.S.-built, sel, the Mark W. Barker, ranks high among most U.S.-crewed, and U.S.-owned Lakers to Cleveland-Cliffs’ noteworthy vessels built in North America in Burns Harbor mill in

  • MT Sep-22#68 MTR 100
Downsides include this type of release can be heavy)
    September 2022 - Marine Technology Reporter page: 68

    MTR 100 Downsides include this type of release can be heavy, with a water weight of up to -62 lbs, limited to 6km (Benthos has a 12km version), and only a single release function. The air weight is 79-lbs, plus the weight of a 17” glass sphere to lift it (+57-lbs buoyancy, 51-lbs air weight), then add

  • MT Sep-22#67 LANDER LAB #4
e can get anything to the bottom of the  al)
    September 2022 - Marine Technology Reporter page: 67

    LANDER LAB #4 e can get anything to the bottom of the al cage on the top. The cage also serves to protect the ceramic ocean,” quipped Don Walsh, Pilot #1 of transducer from impact. The transducer is placed on top to pro- Bathyscaphe Trieste. “The trick is getting it vide a clear view to the surface for

  • MT Sep-22#60 MTR 100
Tech Talk: LFBB 
Marc/Adobestock
The Naval Research)
    September 2022 - Marine Technology Reporter page: 60

    MTR 100 Tech Talk: LFBB Marc/Adobestock The Naval Research Laboratory (NRL) in Washington, D.C. has developed Low-frequency broadband (LFBB), a technology area that exploits the structural acoustics in- volved with underwater sonar. According to Dr. Brian Houston, Acoustics Division Superintendent at