AHTS Stern Roller Bearings and Seals

Stern roller
SXL Stern Roller Thrust Washers

AHTS vessels do the tough job of setting anchors for drilling rigs, as well as towing mobile drilling rigs and equipment from one location to another.The AHTS stern rollers and seals operate in harsh sea conditions, under high bearing loading, while demanding low maintenance and grease free operation. Thordon provides a reliable and cost effective solution to the traditional metallic or phenolic bearings that require constant maintenance.

  • Able to withstand shock loading and fatigue
  • Abrasive resistance
  • Less rigid - it can deflect slightly
  • Allows better load distribution over the bearing surface

Documents


References

References articles of Thordon commercial Propeller shaft bearings in blue water operation


Design

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Thordon Bearings Sizing Calculation Program

The final (fully finished) sizing of a Thordon elastomer or ThorPlas bearing can be determined by using the Thordon Bearing Sizing Calculation Program.
You cannot run the Thordon Bearing Sizing Calculation Program without a User Registration Number.
Once you have a User Registration Number you can download the Program below and enter it when prompted.

Step 1 - Register:
Click here to Request a Bearing Sizing Program User Registration Number

Step 2 - Download:
If you have a Bearing Sizing Program User Registration Number, you can download the program here


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  • News Thumbnails 320x160_NW23-MF

    Thordon Merchant Fleet NewsWorks 2023

    Thordon’s web-based newsletter specifically developed for marine users of oil-free and grease-free bearings in the merchant marine sector. This newsletter includes articles that highlight our successes on tankers, bulk cargo carriers, ferries, and cruise ships with COMPAC seawater-lubricated propeller shaft bearings, and ThorPlas-Blue deck equipment installed and used around the world. We also introduce Thordon’s new BlueWater Seal and highlight the largest rudder bearing Thordon has ever produced.
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Recent Marine News

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  • News-Thumbnails-320x160_Hadi

    Thordon Seal Retrofit Keeps Hadi 37 On-Hire

    Jan 07, 2020
    Capital expenditure is always a key consideration during the system procurement process but when low cost components result in an increase in unbudgeted operational costs, then any savings quickly diminish. That was the experience of Saudi Arabia-based ship operator Hadi Hamad Al-Hammam when the original shaft seals fitted to Hadi 37, a 2013-built twin-screw offshore tug supply vessel (OTSV), began to leak and vibrate, resulting in regular visits to drydock for costly repairs.
    Learn More
  • ThordonNews-TG10035years-thumb

    Thordon Systems Reduce Planned Maintenance Schedules for Offshore Vessel Operator

    Oct 01, 2019
    Canadian company Thordon Bearings has notched up another success story for a customer in the demanding offshore sector, with a bearing and seal installation in “perfect condition” after over three years of operation.
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