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Vetus RL11/4PH Phenolic Cutlass Bearing for 1-1/4" Marine Propeller Shaft
The Vetus RL11/4PH cutlass bearing is specifically designed for marine propulsion systems requiring non-metallic, corrosion-free components. Suitable for a 1-1/4" propeller shaft and installation in a stern tube with a 1-3/4" outside diameter, the bearing features a durable phenolic resin outer casing paired with a polyurethane-rubber lining. The lining incorporates longitudinal grooves to maintain a constant water film, ensuring effective lubrication and cooling during operation.
Manufacturer Vetus Model RL11/4PH Shaft Diameter 1-1/4" Outside Diameter 1-3/4" Length 5" Shaft Diameter (mm) 31.75 mm Length (mm) 127 mm Shell Material Phenolic resin Rubber Lining Polyurethane with longitudinal grooves Shell Size (inch) 1 3/4
Key Features
- Non-metallic phenolic outer casing that cannot corrode.
- Lightweight design suitable for aluminum stern tubes.
- Polyurethane-rubber lining engineered for high wear resistance.
- Grooved inner surface ensuring efficient 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 align the propeller shaft while minimizing vibration, friction, and mechanical wear. The polyurethane lining with longitudinal grooves promotes a stable water film, improving lubrication, thermal stability, and long-term operational reliability in marine environments.
When to Choose Phenolic vs. Brass Bearings
- Phenolic bearings: Ideal for aluminum stern tubes or systems where galvanic corrosion must be prevented.
- Brass bearings: Preferred for standard marine installations requiring high structural strength and durability.
Vetus rubber bearings for larger shaft diameters are available on special order.
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