UNIOR Bottom Bracket Facing Tool - BSA & ITAL
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eBayUNIOR BOTTOM BRACKET FACING TOOL BSA & ITAL 1.37 X 24TPI, 36 X 24TPI RED
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Product Information
Full details
The Unior Bottom Bracket Facing Tool is an essential instrument for professional mechanics and dedicated home enthusiasts who demand precision when preparing bicycle frames for bottom bracket installation. By ensuring the shell faces are perfectly parallel and free from paint or debris, this tool guarantees optimal bearing alignment and long-term component performance. While it offers unparalleled accuracy for BSA standards, users should note that adapting the tool for ITA frames requires the separate purchase of an optional adapter guide, and it requires careful, slow operation to prevent material over-removal.
All features
| Model Part Number | UN626477 |
|---|---|
| Brand | Unior |
Extended Product Information
FAQs
Does this tool come with an ITA adapter?
No, the ITA 1699.4ITA reamer frame guide is sold separately.
Can this tool be used on carbon fiber frames?
Generally, this tool is designed for metal (steel or aluminum) bottom bracket shells. Using it on carbon frames requires extreme caution and is typically not recommended unless the shell is a metal insert.
How do I know when I have faced the shell enough?
Stop when the entire face of the bottom bracket shell shows a clean, uniform finish, indicating the surface is flat and square.
Is cutting fluid necessary?
Yes, using a high-quality cutting fluid helps prolong the life of the tool's cutting teeth and results in a smoother finish on the metal.
What is the primary benefit of facing a shell?
Facing ensures the bearing cups sit perfectly flat against the frame, which prevents misalignment and ensures smooth bearing rotation.
Troubleshooting
The reamer is not cutting the shell face evenly
Check that the guide is fully seated and centered within the bottom bracket shell; adjust if necessary.
The tool feels difficult to turn
Apply fresh cutting fluid and reduce the amount of downward pressure; ensure you are not removing too much material at once.
Magnetic handle is not holding firmly
Clean the magnetic mating surfaces of any metal filings or debris that may be preventing a flush connection.
Pros and Cons
Pros
- Ensures precise parallel alignment for bottom bracket bearings
- High-quality ergonomic grip reduces hand fatigue during use
- Magnetic components allow for fast and efficient setup changes
- Heavy-duty build quality suitable for daily professional shop use
Cons
- ITA frame guide is an optional purchase, not included in the standard kit
- Requires mechanical proficiency to avoid damaging the frame threads
- Heavy tool setup may be overkill for casual hobbyist repairs
Setup, Compatibility & Care
Setup:
- Ensure the bike frame is clamped securely in a professional-grade work stand.
- Clean the bottom bracket shell threads thoroughly before inserting the tool guide.
- Snap the reamer onto the reamer body using the magnetic handle interface.
- Align the BSA guide (or optional ITA guide) into the frame shell until it is centered and stable.
Compatibility:
- Native support for BSA threaded bottom bracket shells.
- Optional ITA standard support available via the 1699.4ITA reamer frame guide.
Care:
- Always clean the reamer teeth with a stiff brush after every use to remove metal shavings.
- Apply a light coat of anti-corrosion oil or tool oil to the reamer surface before storing to prevent rust.
- Store in a dry, cool environment, ideally in a dedicated tool drawer or foam insert to protect the cutting edge.