RiverTough Tailshaft Bearing System


Tailshaft Bearing System

RiverTough Tailshaft Bearings  

propeller-shaft-rivertough

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

Documents

 


References

 


Design

approval-tb-bearing-size-icon

The final (fully finished) sizing of a Thordon elastomer or ThorPlas bearing can be determined by using the Thordon Bearing Sizing Calculation Program.

To download the Thordon Bearing Sizing Calculation Program Version 2017, Release 10, a user registration is required.

Request Bearing Sizing Program User Registration Number

Download Bearing Sizing Calculation Program (2.2 MB) Version 2017, Release 10

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    Thordon NewsWorks 2018

    Thordon’s web-based newsletter specifically developed for marine users of oil-free and grease-free bearings. This newsletter includes feature articles about seawater being the only commercially viable EAL, new class rules, and Thordon's SeaThigor seal.
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  • Thumb320x160-MVKristinAlexis

    Alexis Marine to Retrofit RiverTough to Salt Lugger

    May 08, 2018
    Louisiana-based workboat operator Alexis Marine has awarded a supply contract to Thordon Bearings for the retrofitting of 6in diameter RiverTough bearings to MV Kristin Alexis, the 60ft (18.2m) twin-screw towboat built by Bollinger Shipyard in 1969.
    Learn More
  • Thumbnails-320x160-MV-Tom-Toretti

    Thordon Gives New Class of Towboat Greater Life Expectancy

    Apr 30, 2018
    Thordon Bearings, of Burlington, Ontario, Canada, has received an order to supply four comprehensive shipsets of stern gear for a new class of towboat. The four boats are being built by US shipyard Master Marine of Bayou La Batre, Alabama, for Waterfront Services, based in of Cairo, Illinois.
    Learn More