Propeller Shaft Bearing Systems


Complete Prop Shaft System

Propeller Shaft Bearings

Shaft Coating

Water Quality Package

Propeller Shaft COMPAQ

COMPAC

Thordon COMPAC is a high performance water lubricated bearing system primarily for “blue water” operating conditions. Specially formulated with a low coefficient of friction to reduce startup friction and eliminate stick-slip,

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SXL aft bearing installed sq

SXL

Thordon SXL offers a lower coefficient of friction for reduced break-away torque and smoother operation at lower shaft RPM, increased resistance to third particle abrasive wear and improved wear life compared to XL. 

ThorShield Anti-Corrosion Shaft Coating

ThorShield 

Thordon's ThorShield propeller shaft coating system provides corrosion protection against seawater. This toughened, 2-part epoxy coating is up to nine times more flexible than existing shaft coating products.

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Water Quality Package

Water Quality Package

Thordon Water Quality Package is designed to supply seawater to the propeller shaft bearings for lubrication and cooling while condition the seawater by removing suspended solids.

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Shaft Seals

Thordon TG100 Mechanical Seal

TG100

The Thordon TG100 is a new mechanical seal designed specifically for 86mm (3.375") to 305mm (12") shaft vessels operating in either clean or abrasive-laden waters including workboats, harbor tugs, offshore supply vessels, yachts, ferries, fishing trawlers and self-propelled dredgers. 

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BWSsq

BlueWater Seal

The Thordon BlueWater seal is a water lubricated forward seal for 300mm (11.811”) to 1000mm (39.370”) propeller shafts found in various vessels, such as yachts, cruise ships, merchant ships and naval vessels. The simplicity of the seal design provides minimal seal maintenance.

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Documents



Technical Papers




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_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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  • ThordonNews-Jun1223-thumb

    Thordon Seawater-Lubricated Tailshaft Bearings Selected for SUMED Pipeline Service Boats

    Jun 26, 2023
    Egypt’s SUMED pipeline operator Arab Petroleum Pipeline Company (SUMED) has completed the tailshaft conversion to Thordon’s SXL seawater-lubricated bearing system for seven special purpose single point mooring (SPM) service boats. The final in a series of 17.5m (57.4ft) long, 1976–built service boats had its original oil-lubricated tailshaft bearings replaced with the Thordon system at Nefertiti Marine’s Yard-K, in Rosetta Nile, in December 2022. The first vessel, SUMED 10, was converted in 2019.
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  • ThordonNews-Jun6523-thumb

    Thordon Tailshaft Package Selected After Competitor Solution Wears NIRSA Down

    Jun 13, 2023
    Ecuador’s foremost tuna fishing operator NIRSA has completed a project to convert the tailshaft seals and bearings aboard the 1973-built tuna vessel BP EL Marquez to a seawater-lubricated package from Thordon Bearings. In total, four Thordon SXL propeller shaft bearings and a pair of TG100 mechanical shaft seals, each of which features Thordon’s emergency-safe-return-to-port (SRTP) capability, replaced a competitor’s seawater-lubricated bearings and stuffing box after the shaft had suffered early wear due to gland packing. Bronze shaft liners were also included in the Thordon scope of supply in what marked a significant retrofit project that required the renewal of shafts, sterntubes, seals and bearings.
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