RiverTough Tailshaft Bearing System


Tailshaft Bearing System

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.

  • Wear rates in muddy water are half that of rubber bearings - or less
  • Increased resilience offers easy alignment (3:1 L/D ratio)
  • Easy Installation
  • Eliminates stick-slip and vibration when operating at lower shaft speeds
  • Proven - Hundreds of inland and coastal waterways references
  • Zero to low maintenance

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Design

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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 Version 2017, Release 10 without a User Registration Number. Once you have a User Registration Number you can download the Program below and enter it when prompted.

Click here to Request a Bearing Sizing Program User Registration Number

If you have a Bearing Sizing Program User Registration Number, you can download the program here

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  • News-Thumbnails-320x160_NWWB21

    Thordon Workboat NewsWorks 2021

    Thordon’s web-based newsletter specifically developed for marine users of oil-free and grease-free bearings in the workboat sector. This newsletter includes feature articles that highlight our successes in the Workboat industry with TG100 shaft seals, RiverTough tailshaft bearings, and other pollution-free Thordon products on the US Inland Waterways, Latin America and around the world.
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Recent Marine News

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  • RiverTough Installed on Atria Vessel

    Paraná River Push Boat Fleet Migrates to Thordon

    Mar 29, 2021
    Atria Logistics UABL, one of South America’s leading push boat operators, is on its way to completing a fleet-wide retrofit to Thordon’s water lubricated tailshaft and rudder bearings. In 2014, the Argentinian owner, which operates a fleet of workboats on the Paraná River, installed Thordon’s RiverTough tailshaft bearings to its first push boat, the 41m (135ft) long Concepcion. In 2020, six more vessels in the company’s 26-strong fleet were converted.
    Learn More
  • L&L thumb

    L&L Marine Accepts Delivery of its First Newbuild with a Complete Thordon Propulsion Package

    Aug 17, 2020
    Amelia Ray, the 1600hp push boat Rodriquez Shipbuilding delivered to Mississippi operator L&L Marine Transportation in June, is now operational with a full range of Thordon oil-free and grease-free bearings designed to reduce a vessel’s lost charter days.
    Learn More