Propeller Shaft Bearing Systems

propeller shaft bearing system

Propeller Shaft Bearings

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. 

Installed XL bearing

XL

Our traditional standard propeller shaft bearing grade, Thordon XL is a general purpose bearing offering superior performance compared to other bearings commonly used in propeller shaft applications. XL provides good balance between long wear life, low coefficient of friction, reasonable abrasion resistance and cost effectiveness. 

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RiverTough

Thordon RiverTough propeller shaft bearings operating in combination with hard coated nickel-chrome-boron sleeves are specially formulated to provide superior wear life in very abrasive water conditions and have proven their ability to last at least twice as long as rubber bearings. 

Shaft Coating

Water Quality Package

Bearing Condition
Monitoring System

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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WQP SS r

Water Quality Package

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

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Bearing Condition Monitoring (BCMv2)

BCMv2 & BCM-W

The Thordon Bearing Condition Monitoring system provides a one-touch, remote indication of current bearing clearance. The system comes in both wired and wireless versions that support the Classification Societies’ requirements for condition monitoring of marine vessel bearing wear inspection. By enabling continuous, real-time data, the BCM can empower ship operators to enhance operational efficiency and reduce costs.

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Shaft Seals

Seal installed on Hudson low res (crop)

SeaThigor

The Thordon SeaThigor Seal is a mechanical face seal for 300mm (11.8") to 750mm (29.5") water lubricated propeller shafts found in yachts, cruise ships, merchant ships and naval vessels. The SeaThigor has evolved from a design first tested in 2003 and improved during the next decade.

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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


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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  • CCG Caribou Isle CCG Ile Saint Ours in Drydock at Heddle Marine

    Seal and Bearing Retrofits Highlight Importance of Ontario Partnership to Canadian Coast Guard

    Apr 20, 2021
    Thordon Bearings and Heddle Shipyards have successfully completed a retrofit project to replace the shaft seals and bearings aboard the Canadian Coast Guard (CCG) vessels CCGS Caribou Isle and CCGS Ile St. Ours. The vessels represent not only the first reference for Thordon’s award-winning TG100 SRTP shaft seal onboard a Canadian Coast Guard vessel, but also the growing importance of Ontario’s promising maritime partnership in facilitating CCG requirements.
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  • ThordonNews-COMPACInventory-thumb

    Thordon’s Pivotal Role in AOPS Program Underscores Canada’s Commitment to Environmental Protection

    Jul 27, 2020
    Canada’s Irving Shipbuilding has cited Thordon Bearings as one of a number of partners playing a pivotal role in ensuring the Royal Canadian Navy’s (RCN) new Arctic and Offshore Patrol Ships (AOPS) are capable of environmentally sustainable operations. The first two in a series of six twin-screw vessels entrusted to Irving Shipbuilding, have been put to water with Thordon’s COMPAC water lubricated propeller shaft bearings, which the shipbuilder says are “environmentally progressive” resulting in “zero risk of pollution”.
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