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Mill Log Marine Product Line

Putting your horsepower to work through quality Marine transmission components.


Thordon Bearings

Thordon Bearings

Dirty Water RiverTough Tailshaft Bearings

Thordon Bearings has over 25 years experience working with workboats, pushboats and tugs operating in dirty abrasive-laden water, especially in the Mississippi and Fraser River systems in the U.S.A. and Canada. Long lasting Thordon RiverTough water lubricated tailshaft bearings operating in combination with hard coated shaft sleeves offer life cycle cost and performance benefits to keep your vessel operating longer, saving you money and down time.

Bearing wear rates of vessels operating in the Mississippi waters show that RiverTough bearings last twice as long as rubber bearings.

Documented data from Mississippi workboat operators shows typical RiverTough bearing wear rates of 0.075mm to 0.100mm (0.003" to 0.004") in 6000 to 7000 hours of annual use.

Installation is a Breeze!
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.

Rudder BearingsThordon Rudder Bearings

Reliability, long wear life and superior customer service have made Thordon the first choice in pollution free rudder bearing applications for over 25 years with an impressive reference list of over 4000 vessels. Thordon SXL self lubricating pintle, stock and carrier disc bearings operate grease-free, above and below the waterline.

Thordon SXL rudder bearings offer low friction, operating pressures up to 12 N/mm2 (1740 psi) and the complete elimination of grease and greasing systems removing any risk of pollution. Thordon SXL can also withstand high shock loads and edge loading.

Thordon self-lubricating rudder stock seals provide exceptional wear life, completing the rudder bearing package.


Rudder Bearings


Torsional Control Products

Torsional Control Products

Torsional Vibration Couplings
and Torque Limiting Coupling

When dependability and performance are a requirement, Torsion Control Products’ Spring Couplings are designed to meet your needs.

These devices offer the following advantages in most applications:

Torsional vibration isolation
Resonance isolation
Overload and shock load protection
Noise attenuation
Improved bearing/gear life
Increased system durability
Advantages of using Torsion Control Products' Spring Couplings:

All steel construction for long life
Lubricated and non-lubricated environments
Low rate/long life couplings
Temperature extremes do not affect performance or durability
Performance can be optimized for a given application
Multistage stiffness for optimized system tuning
Controlled coulomb damping
Drop-in replacement for original drive plates, no spacers required
Integral shaft support capability eliminates the need for additional bearing support
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