COMPAC Open Seawater Lubricated
Propeller Shaft System





Charting a New Course to Eliminate Ship Propulsion Pollution
Below the Waterline Forever




The COMPAC Open Seawater Lubricated Propeller Shaft Bearing System eliminates oil and grease discharges while delivering the lowest operating costs for ship owners. Oil systems can be expensive to maintain, especially when utilizing an EAL. With an open Thordon system, there is zero environmental impact and the headaches that come with oil leakage can be avoided completely, and seawater is free!  A COMPAC system guarantees compliance to the everchanging environmental regulations in the shipping industry.

Not only is the COMPAC system the environmentally responsible choice, it is proven to last! We have over 550 ocean-going tankers, bulkers, dry cargo, ferry, cruise and container ships equipped with COMPAC seawater lubricated propeller shaft bearings. 

What are you leaving in your wake?



“Having water-lubricated stern tube bearings not only improves a company’s environmental credentials but also eliminates the costs associated with maintaining an oil system and associated equipment.”

– Enio Stein, CFO
Log-In Logística (Brazil)


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Did you know that seawater is a free lubricant for your sterntube? The use of seawater lubrication dates back to 1843 and with robust modern polymer bearing technology seawater lubricated systems are less complicated and time consuming than oil lubricated shaft systems. With zero pollution risk you won’t have to worry about criminal penalties or fines from illegal oil leaks.


Propeller Shaft Bearing

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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COMPAC bearings with key
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Thordon COMPAC bearings

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COMPAC bearings fitted to
Citadel Ferussmit



Shaft Coating

 

 

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

 

 

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WQP

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

 

 

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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Bearing Condition Monitoring System


Bearing Condition Monitoring (BCMv2)

BCMv2

The Thordon Bearing Condition Monitoring (BCMv2) system supports the Classification Societies’ requirements for condition monitoring of marine vessel bearing wear inspection. The Thordon BCMv2 system provides a one-touch, remote indication of current bearing clearance. The measurement is displayed on the control panel located in the vessel.

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Documents


Technical Papers


References


Class Society Requirements For Extended Shaft Withdrawals


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


Videos


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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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