Thordon COMPAC Bearing System

Thordon COMPAC Bearing System

Thordon COMPAC bearing system is a " Blue water propeller shaf bearing system "

The COMPAC bearing system uses seawater as the lubrication medium in place of oil. Seawater is taken from the sea, pumped through non-metallic COMPAC propeller shaft bearings and returned to the sea. To ensure that abrasives are removed from the seawater supply, a Thordon Water Quality Package is used.  Use of seawater lubricated bearings eliminates the aft seal, as well as the storage, sampling and disposal of oil. The COMPAC shaft bearing system is currently installed on 600 vessels worldwide.

Thordon Bearing is a non metallic bearing made from elastomeric polymer alloys, which enables it to get lubricated by sea water so that there is no friction between the rotating propeller shaft and bearings.

To promote early formation of a hydrodynamic film between the shaft and bearing, the lower (loaded) portion of the bearing is smooth, while the upper half of the bearing incorporates grooves for flow of the water lubricant/coolant. The COMPAC system typically includes COMPAC bearings, shaft liners, a Water Quality Package, Thor-Coat shaft coating and a forward seal.

The Thordon Water Quality Package is a self-contained pumping unit which removes suspended solids with a specific gravity of 1.2 or higher and greater than 80 microns (0.003”). As water enters the forward seal, it flows through the COMPAC bearings and exits at the stern. Flow rate is monitored by low flow alarms.

The Thor-Coat propeller shaft coating provides 10-year corrosion protection against seawater. This toughened, 2-part epoxy coating is up to nine times more flexible than existing shaft coating products.

Advantages os Thordon COMPAC Bearing System

• Zero pollution risk (no oil required)
• 15-Year Wear Life Guarantee for COMPAC in bluewater  operation
• Easy fitting
• Reduced seal maintenance costs
• Inspections without shaft withdrawal
• Resistance to shock and edge loading
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