Automotive trailer accessory designed to keep wheel bearings greased and sealed for dependable towing. Shanrya Trailer Bearing Protector helps owners avoid costly bearing failure and gives peace of mind on launches and long hauls. Is this the right upgrade for your boat or utility trailer?
⚡ At a Glance
- • Sealing Performance: Maintains slight 3 psi pressure with a spring-loaded piston to deter water and dirt ingress
- • Best for: Boat and utility trailers with standard 1.98 inch hub diameters
- • Not ideal for: Hubs that are not 1.98 inch or non-standard bespoke bearing assemblies
Spring-loaded piston keeps grease pressurised to maintain an internal barrier. Stainless steel construction and automatic pressure relief support reliable marine and road use.
Consistent Grease Pressure - with spring-loaded piston
Spring-loaded piston applies a slight 3 psi pressure to the grease, maintaining a small positive pressure between the hub interior and the outside environment. An automatic pressure relief valve prevents overpressure during refilling.
Maintains a grease barrier that reduces water and dirt ingress, lowering the risk of premature bearing failure and improving tow reliability.
Corrosion Resistance for Marine Use - with stainless steel construction
Manufactured from stainless steel and described as suitable for marine bearing housings, designed to withstand exposure to wet conditions common in boat trailers. Smooth surfaces aid cleaning and resist common corrosive elements.
Durable metal construction extends service life on launch ramps and wet roads, reducing the need for frequent replacement.
Simplified Maintenance and Monitoring - with removable cover and relief function
Removable cover allows direct inspection of oil level without dismantling the hub and the automatic pressure relief prevents overfilling during lubrication. The unit is designed for direct replacement of standard factory parts.
Quick oil-level checks at the ramp and straightforward servicing save time and make routine maintenance less fiddly.
✨ The 4 Key Reasons for Shanrya Trailer Bearing Protector
- 3 PSI Spring Piston - Maintains slight positive pressure to deter water and dirt ingress
- Stainless Steel Body - Provides corrosion resistance for frequent marine exposure and wet trips
- Removable Inspection Cap - Allows quick oil checks without wheel disassembly at ramps
- Automatic Pressure Relief - Prevents overfilling and protects seals during lubrication servicing
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Material: Stainless steel
- Pressure: 3 psi slight pressure
- Mechanism: Spring-loaded piston
- Hub Diameter: 1.98-inch
❓ Frequently Asked Questions
Q: What hub diameter does this fit?
A: Designed to fit most trailer boats with a 1.98 inch hub diameter, suitable for many common small to medium trailer hubs.
Q: How does the pressure system work?
A: A spring-loaded piston applies a slight 3 psi pressure to the grease, while an automatic pressure relief prevents overfilling and excessive internal pressure.
Q: Is it suitable for marine use?
A: Yes, described for marine bearing housings and built from stainless steel so it is intended for boat trailers and wet environments.
🏆 Our Verdict
Suitable for boat and utility trailer owners who want to reduce bearing contamination and simplify maintenance. Core strength is the spring-loaded 3 psi grease pressurisation combined with stainless steel construction and automatic pressure relief. Though an upgrade requires an initial outlay, the durable materials and easier servicing deliver sensible long-term value for regular tow use.
