ID
976989
$ 659.79
1-2 weeks delivery time
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The Vetus RULAG3 cutlass bearing is built for a 3" propeller shaft and features a brass outer shell with a 4" outside diameter and a 12" length. Its polyurethane-rubber lining is manufactured with longitudinal grooves to maintain consistent water lubrication and cooling, while the corrosion-resistant brass construction ensures durability and reliability for marine installations using fully imperial shaft and stern-tube specifications.
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Vetus RULAG3 Brass Cutlass Bearing for 3" Marine Propeller Shaft
The Vetus RULAG3 cutlass bearing is engineered for marine propulsion systems designed with imperial shaft and stern tube dimensions. Intended for a 3" propeller shaft and compatible with a stern tube featuring a 4" outside diameter, the bearing incorporates a strong brass outer shell and a durable polyurethane-rubber lining. Longitudinal grooves within the lining provide continuous water flow to ensure effective cooling and lubrication during operation.
Manufacturer Vetus Model RULAG3 Shaft Diameter 3" Outside Diameter 4" Length 12" Shaft Diameter (mm) 76.2 mm Length (mm) 304.8 mm Shell Material Brass Rubber Lining Polyurethane with longitudinal grooves Shell Size (inch) 4
Key Features
- Brass outer casing offering high durability and corrosion resistance.
- Polyurethane-rubber lining designed for extended wear life.
- Longitudinally grooved inner surface for optimal water lubrication and cooling.
- Fully imperial (inch-based) shaft and stern tube compatibility.
- Suitable for both motorboats and sailing yachts.
Technical Function
Cutlass bearings provide structural support and accurate alignment for the propeller shaft, minimizing friction, vibration, and mechanical wear. The grooved polyurethane interior ensures a continuous water film, promoting efficient lubrication, thermal stability, and long-term operating reliability in marine environments.
When to Choose Brass vs. Phenolic Bearings
- Brass bearings: Ideal for standard marine applications requiring strength, resistance to corrosion, and the ability to withstand dynamic loading.
- Phenolic bearings: Recommended for aluminum stern tubes or installations where galvanic corrosion must be eliminated.
Vetus rubber bearings for larger shaft diameters are available on special order.
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