ID
976991
$ 1,797.38
1-2 weeks delivery time
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The Vetus RULAG4 cutlass bearing is designed for a 4" propeller shaft and features a brass outer shell with a 5" outside diameter and a 16" length. Its polyurethane-rubber lining includes longitudinal grooves to ensure consistent water lubrication and cooling, while the durable brass construction provides long-term corrosion resistance for marine installations built to imperial shaft and stern-tube specifications.
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Vetus RULAG4 Brass Cutlass Bearing for 4" Marine Propeller Shaft
The Vetus RULAG4 cutlass bearing is engineered for marine propulsion systems that utilize imperial (inch-based) dimensional standards. Designed for a 4" shaft and compatible with a stern tube featuring a 5" outside diameter, this bearing combines a corrosion-resistant brass shell with a polyurethane-rubber lining. The lining’s internal longitudinal grooves promote continuous water flow, providing efficient lubrication and cooling during extended operation.
Manufacturer Vetus Model RULAG4 Shaft Diameter 4" Outside Diameter 5" Length 16" Shaft Diameter (mm) 101.6 mm Length (mm) 406.4 mm Shell Material Brass Rubber Lining Polyurethane with longitudinal grooves Shell Size (inch) 5
Key Features
- Heavy-duty brass outer shell offering excellent corrosion resistance.
- Polyurethane-rubber lining designed for superior wear resistance.
- Grooved inner surface ensuring steady water lubrication and cooling.
- Fully imperial (inch-based) sizing for shaft and stern tube compatibility.
- Suitable for both motorboats and sailing yachts.
Technical Function
Cutlass bearings support and precisely align the propeller shaft, reducing friction, vibration, and wear. The grooved polyurethane lining maintains a stable water film for improved lubrication and thermal control, delivering reliable long-term performance in marine environments.
When to Choose Brass vs. Phenolic Bearings
- Brass bearings: Ideal for most marine applications due to their strength, corrosion resistance, and load-handling capability.
- Phenolic bearings: Recommended for installations using aluminum stern tubes or where galvanic corrosion must be prevented.
Vetus rubber bearings for larger shaft diameters are available on special order.
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