Oxford SRAM DUB PF46 Bottom Bracket - 68/73mm
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Product Information
Full details
The Oxford SRAM DUB PF46 Bottom Bracket is an essential component for cyclists looking to upgrade or replace their drivetrain interface to accommodate SRAM DUB cranksets. It is ideal for mountain bikers and road cyclists utilizing press-fit bottom bracket shells, offering a significant boost in drivetrain stiffness and bearing longevity. Users should note that this unit requires specific press-fit installation tools, making it less accessible for those without a home workshop or professional mechanical experience.
All features
| Material | Nylon |
|---|---|
| Model Part Number | 5030009453120 |
| Brand | Oxford |
Extended Product Information
FAQs
Does this bottom bracket fit GXP cranksets?
No, this is specifically designed for the SRAM DUB 29mm axle standard and is not compatible with 24mm GXP spindles.
Can I install this at home?
Yes, if you have a bicycle-specific press-fit installation tool. Do not attempt to hammer the cups in, as this can damage the bearings.
Is this compatible with 30mm spindle cranks?
No, this is strictly for the SRAM DUB 29mm spindle standard.
Does it include spacers?
The kit is designed for 68/73mm shells; depending on your specific frame setup, you may need additional DUB-specific spacers as per your crankset manufacturer's instructions.
How often should I service the bearings?
The bearings are sealed for longevity, but you should inspect them for roughness every 6 months or after frequent riding in wet, muddy conditions.
Troubleshooting
Audible creaking during pedaling
Remove the crank, clean the spindle and bearing seals, and ensure the press-fit cups are seated tightly in the frame shell.
Cranks feel draggy or stiff
Verify that the DUB preload adjuster is not tightened too far against the bearing cover, which can cause binding.
Difficulty pressing the cups into the frame
Check the frame shell for burrs or debris, and ensure you are using a dedicated press-fit installation tool with the correct adapters.
Pros and Cons
Pros
- Excellent durability due to high-quality sealed bearings
- Lightweight yet rigid alloy construction
- Optimized for smooth power transfer
- Corrosion-resistant finish
Cons
- Requires specialized press-fit installation tools
- Not compatible with non-DUB 29mm spindle cranks
- Installation is permanent until removed, which can be difficult without proper extractors
Setup, Compatibility & Care
This bottom bracket is designed for bicycle frames with a 46mm press-fit shell diameter and a shell width of 68/73mm. Installation must be performed using a professional-grade press tool to ensure the cups are seated perfectly parallel. Avoid striking the unit directly with a hammer. For care, keep the area around the crank-to-bearing interface free of excessive grit. Regular maintenance involves checking for any lateral play in the cranks and ensuring the preload adjuster on the non-drive side crank arm is correctly set to prevent excessive pressure on the bearings.