Trailer Bearing Dust Grease Cover - 50.5mm
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Product Information
Full details
The AB Tools 50.5mm Trailer Bearing Dust Grease Cover is an essential component for trailer owners looking to protect their wheel bearings from debris, water, and contaminants. Designed for heavy-duty use, this zinc-plated steel cap is ideal for those who maintain their own trailers and require a reliable, durable seal to extend the lifespan of their bearing assemblies; however, users must precisely measure their hub bore to ensure compatibility, as a 50.5mm fit is specific and non-adjustable.
All features
| Model Part Number | TR244 |
|---|---|
| Brand | AB Tools |
Extended Product Information
FAQs
How do I know if this fits my trailer?
Measure the internal diameter of your trailer hub using a caliper. It must be exactly 50.5mm.
Is this sold as a pair?
No, this listing is for one individual hub cap.
Does it come with grease inside?
No, it is a dry metal cap. You should apply your own high-temperature wheel bearing grease during installation.
Can I use this on a boat trailer?
Yes, the zinc-plated finish is designed for durability, but ensure it is seated firmly to prevent water ingress.
What tools are needed for installation?
Usually a rubber or soft-faced mallet is sufficient to tap the cap into place.
Troubleshooting
Cap keeps falling out during transit
Ensure the hub bore is clean. If the cap is loose, check that you have the correct 50.5mm diameter, as a loose fit indicates a mismatch or worn hub.
Cap is difficult to seat flush
Check for debris inside the hub lip. Use a rubber mallet to apply even pressure around the edges rather than striking the center.
Signs of surface rust appearing
Clean the surface thoroughly and apply a thin layer of high-quality chassis grease or a corrosion-inhibiting spray.
Pros and Cons
Pros
- High-strength steel construction for long-term durability
- Zinc-plating prevents rust and environmental degradation
- Essential for extending the service life of trailer bearings
- Easy to install and replace
Cons
- Requires precise measurement of hub diameter for proper fit
- Only compatible with 50.5mm internal bore hubs
- Sold as a single unit, requiring individual purchase per wheel
Setup, Compatibility & Care
Before installation, ensure the hub bore is completely clean and free of old grease or metal burrs. Use a soft-faced mallet to gently tap the cap into the hub until it sits flush.
Compatibility
- Only for hubs with an internal diameter of 50.5mm.
- Verify compatibility by using a digital caliper to measure the inner lip of your trailer hub.
Care Instructions
- Periodically wipe the exterior with a damp cloth to remove salt or chemical buildup.
- Inspect the cap for dents or cracks after driving on particularly rough terrain.
- If the cap becomes loose over time, do not attempt to reshape it; replace it to maintain a proper bearing seal.