Vetus RL21/4PH - Phenolic Cutlass Bearing for Shaft Ø 2 ¼'', 3'' Outside, Length 9''

Name: Vetus RL21/4PH - Phenolic Cutlass Bearing for Shaft Ø 2 ¼'', 3'' Outside, Length 9''
SKU: Vetus RL21/4PH
Price: 166.98417441759 USD
Availability: InStock

ID 976947

$ 166.98

1-2 weeks delivery time

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The Vetus RL21/4PH cutlass bearing is designed for a 2-1/4" propeller shaft and features a lightweight phenolic resin outer shell with a 3" outside diameter and a 9" length. Its polyurethane-rubber lining incorporates longitudinal grooves to maintain continuous water lubrication and cooling, while the corrosion-free, non-metallic phenolic shell makes it the preferred solution for aluminum stern tubes and installations requiring galvanic protection.

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Vetus RL21/4PH Phenolic Cutlass Bearing for 2-1/4" Marine Propeller Shaft

The Vetus RL21/4PH cutlass bearing is engineered for marine propulsion systems where a corrosion-free, non-metallic bearing solution is essential. Designed for a 2-1/4" propeller shaft and compatible with a stern tube sized at 3" outside diameter, this model combines a phenolic resin outer shell with a polyurethane-rubber inner lining. The lining is formed with longitudinal grooves that promote continuous water flow, ensuring effective lubrication and cooling during shaft operation.

Manufacturer	Vetus
Model	RL21/4PH
Shaft Diameter	2-1/4"
Outside Diameter	3"
Length	9"
Shaft Diameter (mm)	57.15 mm
Length (mm)	228.6 mm
Shell Material	Phenolic resin
Rubber Lining	Polyurethane with longitudinal grooves
Shell Size (inch)	3

Key Features

Lightweight phenolic resin outer casing that cannot corrode.
Ideal solution for aluminum stern tubes and non-metallic propulsion systems.
Polyurethane-rubber lining designed for long service life and high wear resistance.
Grooved internal surface ensuring stable water lubrication and efficient cooling.
Full imperial (inch) sizing for precise compatibility with marine shaft systems.
Suitable for both motorboats and sailing yachts.

Technical Function

Cutlass bearings are essential for supporting and correctly aligning the propeller shaft, reducing vibration, friction, and wear. The grooved polyurethane lining maintains a continuous water film between shaft and bearing, improving lubrication, thermal stability, and long-term operational reliability in demanding marine environments.

When to Choose Phenolic vs. Brass Bearings

Phenolic bearings: Recommended where galvanic corrosion must be eliminated, particularly in aluminum stern tubes or systems requiring non-metallic components.
Brass bearings: Standard for general marine installations due to their strength and resistance to corrosion, but not suitable where dissimilar metal contact must be avoided.

Vetus rubber bearings for larger shaft diameters are available on special order.