RiverTough Tailshaft Bearings


 
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RiverTough bearings run in combination with hard coated nickel-chrome-boron (NiCrB) Thordon shaft sleeves routinely outlast rubber bearings by a factor of two or more in the most abrasive operating water conditions.RiverTough offers increased resilience compared to rubber bearings offering easier alignment and less edge loading (installation at 3:1 vs. 4:1 L/D ratio).

Thordon RiverTough bearings can be installed using an interference freeze fit or bonded in place using a Thordon-approved adhesive. Interference fit is often recommended for new build installations where the housing bore is consistent and concentric. Bonding is often the best option for repair installations where the housing bore may not be ideal.

  • Reliable
  • Saves money - Reduced operational costs
  • Zero to low maintenance
  • Quick delivery
  • Easy installation

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References

 

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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Our Newsletter

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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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  • ThordonNews-Apr25-RT500-thumb

    Thordon Bearings RiverTough Exceeds 500 Installations in Workboat Sector

    May 01, 2025
    In a significant milestone for the company, Thordon Bearings has seen its RiverTough tailshaft bearing solution surpass 500 installations in the workboat sector. Primarily a retrofit solution but also increasingly specified for newbuilds, RiverTough is designed for coastal and inland waterways, where conditions are typically muddy and abrasive. The solution, applied in combination with hard-coated nickel-chrome-boron (NiCrB) Thordon shaft sleeves, has been verified as outlasting rubber bearings by a factor of two or more in the harshest operating environments.
    Learn More
  • ThordonNews-SXL3-1-thumb

    Thordon Secures Contract to Retrofit Tailshaft Bearings Across Panama Fleet of 32 Tugs

    May 21, 2024
    Thordon Bearings has secured a significant contract to convert the rubber tailshaft bearings across an entire fleet of Panama-operating tugs, pilot vessels, and workboats to water-lubricated polymer bearings. The agreement with the unnamed operator follows the successful retrofitting of Thordon’s SXL tailshaft bearings to twelve of its twin-screw tugs last year during scheduled dry dockings.
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