Duramax Marine Bearings: Designed for Superior Performance in the Most Demanding Environments

The Duramax marine bearings are engineered with a proprietary formulation of extremely tough chemical and oil resistant nitrile rubber polymer lining, molded and firmly bonded into a naval brass or non-metallic shell. Groovers run the entire length of the rubber marine bearing allowing for maximum lubricating water flow and dissipation of frictional heat.

The rotational power of a ship’s propeller is determined by the power produced by the marine engine to rotate crankshaft. The crankshaft of the main engine is supported and connected to the connecting rod via main bearings whose main function is to transmit the load without any metal to metal contact. This is achieved by choosing special materials for manufacturing main bearings which floats the journal pin of the rotating crankshaft when lube oil is supplied to it.

Properties of Duramax Marine Bearings:

•  It must be anti friction resistant
• It must be of anti-corrosive type
• Good running in and grinding in ability
• Good load carrying capacity
• Good embadibility property
• Must support the oil film
• Good tensile and compressive strength
• Must not react with the lube oil

·         It must have thermal resistant property to avoid any damage in case it’s running hot

Why Rubber is the First Choice While Buying Duramax Marine Bearings?

The tribology forces of rubber, when lubricated with water makes it one the most slippery materials. When sliding on a wet metal surface friction can be virtually eliminated, making it the perfect material to use for water-lubricated Duramax marine bearings.

Duramax marine bearings

Other reasons:

• The elastic properties of rubber allows grit and dirt to press into its surface until they are flushed out, protecting the shaft from scoring – unlike hard surface materials that can cause excessive shaft wear.
• Rubber is able to utilize any lubricants with low viscosity such as water
• When starved of water, the rubber materials used Duramax marine bearings will not wipe or fail in a sudden catastrophic manner like hard surface materials. Rubber can crystallize but will always maintain its form.
• Each rubber landing area acts as an independent bearing surface
• Rubber Duramax marine bearings always have contact area due to the elastomeric properties
• Water-lubricated rubber has twice the specific heat of oil. An equal weight of water will absorb twice the heat of oil lubricants.

Rubber Water-Lubricated Duramax Marine Bearings: The Environmental Solution

Water lubricated rubber Duramax marine bearings offer an alternative solution to the ever growing concerns of environmental restrictions, the high costs of maintenance and the replacement in today’s marine industry. How are rubber-lined Duramax marine bearings an alternative? They use water as the lubricant. This concept is very important because if water is used rather than oil, contamination seals are not required. If seals are not required, pumps and tanks may not be necessary. This leads to a simpler shaft bearing system and immediate cost savings.

Advantages of Rubber Properties in Water Lubricated Duramax Marine Bearing Design:

• The proprietary rubber formulation of the lined duramax marine bearing is broken up by water grooves into a number of lands or faces. These surface lands run parallel to the shaft and serve in supporting it. A tough resilient rubber compound is selected which is relatively immune to the action of grit and sand and also helps reduce noise and vibration.
• When grit is trapped between the shaft and the rubber, it is depressed into the landing’s elastic surface and rolled into an adjacent water groove where it is immediately flushed out of the bearing.
• With proper loading, rotational speed and clearances, a water wedge is formed in the rubber landing causing the shaft to ride on a thin film that totally separates the shaft and bearing surface. This is known as hydrodynamic lubrication. At this juncture both friction and wear decrease significantly in a rubber duramax marine bearing.
• The proprietary rubber formulations have nothing more to prove. Rubber duramax marine bearings are on more vessels around the world than any other material. 

Get A Prop Duramax marine bearings have set unbelievable performance records that other bearing materials are still trying to meet. So, investing in duramax marine bearing is not a great but smart choice for your boat/ship.