ID
976946
$ 198.87
1-2 weeks delivery time
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The Vetus RL21/2PH cutlass bearing is designed for a 2-1/2" propeller shaft and features a corrosion-free phenolic resin outer shell with a 3-1/4" outside diameter and a 10" length. Its polyurethane-rubber lining incorporates longitudinal grooves to maintain water lubrication and cooling, while the lightweight, non-metallic phenolic shell makes this bearing ideal for aluminum stern tubes and installations requiring galvanic isolation.
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Vetus RL21/2PH Phenolic Cutlass Bearing for 2-1/2" Marine Propeller Shaft
The Vetus RL21/2PH cutlass bearing is engineered for marine propulsion systems where a lightweight, corrosion-free, non-metallic bearing solution is required. Designed for a 2-1/2" propeller shaft and installation in a stern tube with an outside diameter of 3-1/4", this model features a phenolic resin outer casing paired with a polyurethane-rubber lining. Longitudinal grooves inside the lining ensure a continuous flow of water for optimal lubrication and cooling during shaft rotation.
Manufacturer Vetus Model RL21/2PH Shaft Diameter 2-1/2" Outside Diameter 3-1/4" Length 10" Shaft Diameter (mm) 63.50 mm Length (mm) 254 mm Shell Material Phenolic resin Rubber Lining Polyurethane with longitudinal grooves Shell Size (inch) 3 1/4
Key Features
- Phenolic resin outer shell that cannot corrode and is lightweight.
- Ideal for aluminum stern tubes and installations requiring galvanic corrosion avoidance.
- Polyurethane-rubber lining with excellent wear resistance.
- Internal grooves ensuring reliable water lubrication and cooling.
- Fully imperial (inch-based) sizing for shaft and stern tube compatibility.
- Suitable for motorboats and sailing yachts.
Technical Function
Cutlass bearings support and align the propeller shaft while reducing vibration, friction, and mechanical wear. The grooved polyurethane lining maintains a stable water film along the shaft surface, improving lubrication, heat dissipation, and long-term operational reliability in marine environments.
When to Choose Phenolic vs. Brass Bearings
- Phenolic bearings: Best suited for aluminum stern tubes or applications requiring non-metallic components to eliminate galvanic corrosion risks.
- Brass bearings: Standard for most marine propulsion systems due to mechanical strength and corrosion resistance, though not suitable for mixed-metal environments.
Vetus rubber bearings for larger shaft diameters are available on special order.
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