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Vetus RULAG21/4 Brass Cutlass Bearing for 2-1/4" Marine Propeller Shaft
The Vetus RULAG21/4 cutlass bearing is engineered for marine propulsion systems built to imperial specifications. Designed for a 2-1/4" shaft and compatible with a stern tube featuring a 3" outside diameter, this bearing combines a strong brass shell with a polyurethane-rubber lining. The lining incorporates longitudinal grooves that maintain continuous water flow, ensuring efficient lubrication and cooling during operation.
Manufacturer Vetus Model RULAG21/4 Shaft Diameter 2-1/4" Outside Diameter 3" Length 9" Shaft Diameter (mm) 57.15 mm Length (mm) 228.6 mm Shell Material Brass Rubber Lining Polyurethane with longitudinal grooves Shell Size (inch) 3
Key Features
- Robust brass outer shell with excellent corrosion resistance.
- Polyurethane-rubber lining engineered for high wear resistance.
- Longitudinal grooves for optimal water lubrication and effective cooling.
- Fully imperial (inch-based) shaft and stern tube dimensions.
- Suitable for motorboats and sailing yachts.
Technical Function
Cutlass bearings support and align the propeller shaft, reducing friction, vibration, and wear. The grooved polyurethane lining maintains a stable water film, ensuring proper lubrication, thermal stability, and long service life in marine environments.
When to Choose Brass vs. Phenolic Bearings
- Brass bearings: Ideal for standard marine applications thanks to their strength, load capacity, and corrosion resistance.
- Phenolic bearings: Recommended for aluminum stern tubes or environments where galvanic corrosion must be prevented.
Vetus rubber bearings for larger shaft diameters are available on special order.
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