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Vetus RULAG30PH Phenolic Cutlass Bearing for 30 mm Marine Propeller Shafts
The Vetus RULAG30PH is a water-lubricated cutlass bearing developed for propulsion systems using a 30 mm shaft in conjunction with an imperial-dimension stern tube. It is built with a phenolic resin outer shell sized at 1 3/4", offering a lightweight, non-metallic and corrosion-free alternative to brass, particularly well-suited for aluminum boats. The inner polyurethane-rubber lining is grooved longitudinally to ensure continuous water flow for cooling and lubrication, providing reliable shaft support and vibration damping.
Key Features
- Polyurethane-rubber lining with high wear resistance
- Phenolic resin outer casing in 1 3/4" inch dimensions
- Non-metallic, corrosion-free construction ideal for aluminum stern tubes
- Grooved inner surface for continuous water lubrication and improved cooling
- Designed for metric shaft diameter and imperial stern tube dimensions
- Suitable for both motorboats and sailing yachts
- Available for larger shaft diameters upon request
Technical Specifications
Parameter Value Shaft Diameter 30 mm Outer Diameter (Shell Size) 1 3/4" Length 127 mm Shell Material Phenolic resin Lining Material Polyurethane-rubber Lubrication Water-lubricated
Application and Use
Cutlass bearings are essential for supporting and aligning the propeller shaft in marine propulsion systems. Their water-lubricated rubber linings reduce friction, absorb vibration, and ensure reliable long-term performance under continuous marine operating conditions.
Phenolic vs. Brass Bearings
- Phenolic bearings: Recommended for aluminum stern tubes or where dissimilar metal contact and galvanic corrosion must be avoided. They are lightweight, non-metallic, and resistant to marine corrosion.
- Brass bearings: Commonly used in standard marine installations due to their strength and corrosion resistance, but phenolic construction is preferred in corrosion-sensitive or non-metallic applications.
Manufacturer
Vetus
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