The Campagnolo Bora One [paid link] hub is one of the most precisely engineered wheel components in professional cycling. Designed to deliver maximum efficiency, smooth rolling, and consistent engagement, it requires exact installation and adjustment to perform as intended. However, even small deviations during setup can lead to problems such as play in the hub, excessive drag, or premature bearing wear. This guide explains why your Campagnolo Bora One [paid link] hub might not be set up correctly, how to identify the issues, and the correct steps to fix them for optimal performance and longevity.
Understanding the Campagnolo Bora One Hub Design
The Bora One hub is built around a lightweight aluminum body with high-precision steel or ceramic bearings (depending on the version). Its design prioritizes smoothness and stiffness while maintaining minimal weight. The hub features a cup-and-cone bearing system rather than sealed cartridge bearings, allowing fine adjustment of preload and smoothness.
Because of this traditional Campagnolo bearing architecture, correct bearing preload and axle centering are critical. Unlike many modern hubs that use fixed preload cartridge systems, the Bora One’s manual adjustment mechanism gives mechanics more control—but also more room for setup error.
Signs That Your Bora One Hub Is Not Set Up Correctly
Several symptoms indicate that your hub’s setup needs attention. These issues often appear after improper installation or servicing.
1. Play or Lateral Movement in the Hub
If you feel side-to-side movement when rocking the wheel at the rim, the bearing preload is likely too loose. This can lead to accelerated wear of the cones and cups, reducing hub life.
2. Rough or Notchy Rotation
Excessive preload or over-tightening of the locknut can cause the bearings to bind, resulting in rough rotation or drag. This not only affects efficiency but also risks pitting the bearing races.
3. Uneven Wheel Centering
If the wheel doesn’t sit perfectly centered in the frame, the axle spacing or hub adjustment might be incorrect. Bora One hubs [paid link] must maintain perfect alignment to prevent uneven load on the bearings.
4. Unusual Noises or Creaks
Clicking or creaking noises from the hub during pedaling often point to misalignment between the axle, cones, and bearings. Incorrect torque or incomplete assembly can cause such sounds.
Tools Required
To correctly diagnose and fix the Bora One hub setup, the following tools are required:
- 17 mm cone wrenches (pair)
- Campagnolo bearing adjustment tool or fine cone spanners
- Torque wrench [paid link] with small torque range (2–10 Nm)
- Hex wrenches (2.5 mm, 5 mm)
- Campagnolo grease or approved lithium-based bearing grease
- Clean lint-free cloths
Correct Installation Procedure
Proper installation is essential to achieving optimal hub performance. Campagnolo hubs rely on precision fitting and specific torque values to maintain their legendary smoothness.
Axle Assembly
Begin by ensuring the axle and bearings are completely clean and lightly greased. When inserting the axle through the hub shell, make sure the cones seat evenly on both sides. Any angular misalignment at this stage can cause uneven bearing load.
Bearing Preload Adjustment
With the axle installed, use the Campagnolo adjustment collar to set bearing preload. Rotate the hub gently as you tighten the collar until any play is removed, then back off slightly until the hub spins freely with no resistance. Lock the collar using the fixing screw to prevent movement.
Locknut Torque
Tighten the axle end nuts to the specified torque (typically 8–10 Nm). Over-tightening can compress the bearings excessively, while under-tightening can allow play to develop over time.
How to Check for Correct Setup
Once installed, the wheel should spin freely with no lateral play or resistance. A correctly adjusted Bora One hub will have a slightly “silky” feel when rotated by hand. The bearings should move smoothly without drag, and the axle should feel perfectly stable when rocked in the dropouts.
To confirm, install the wheel in the frame and check that it sits squarely. Spin it several times and listen for any scraping, clicking, or uneven sounds. If present, repeat the adjustment process to fine-tune the preload.
Common Setup Mistakes and How to Correct Them
Over-Tightening the Adjustment Collar
This is one of the most frequent mistakes. It creates unnecessary drag and reduces freewheeling efficiency. To fix this, loosen the collar slightly and retest bearing movement until rotation becomes smooth again.
Incorrect Locknut Sequence
The Bora One hub’s locknut assembly must follow the correct order: dust cap → locknut → washer → cone. Mixing this sequence can lead to misalignment and premature wear. Reassemble correctly if needed.
Insufficient Grease Application
Dry bearing races or minimal lubrication increase friction and heat buildup. Clean and re-grease the bearings using Campagnolo’s recommended bearing grease to restore smoothness.
Misaligned Axle Position
If one side of the hub has excessive spacing or the axle appears off-center, the internal cone adjustment may be uneven. Reset both sides equally to ensure proper alignment and even load distribution.
Optimizing Bora One Hub Performance
To keep the Bora One hub performing like new, regular inspection and fine-tuning are vital. Check bearing preload every 2,000–3,000 km and re-grease at least once per season. Avoid pressure washing the hub area, as water intrusion can degrade the grease and bearings quickly.
For riders seeking the best rolling performance, consider upgrading to Campagnolo’s CULT (Ceramic Ultimate Level [paid link] Technology) bearing kit, which reduces friction significantly. However, installation must follow the same precision setup procedure described above to avoid damaging the ceramic races.
Compatibility Considerations
Campagnolo Bora One hubs [paid link] are designed for 11- and 12-speed Campagnolo drivetrains but can be adapted for Shimano or SRAM systems with specific freehub bodies. Always verify that the freehub is fully seated and correctly torqued before riding. Mismatched axle spacing or incorrect cassette fitting can affect alignment and bearing life.
Final Verification Checklist
Before finalizing setup, verify the following:
- The hub spins freely without noise or resistance.
- No lateral play exists when rocking the wheel.
- The axle sits perfectly centered in the dropouts.
- Locknuts and collars are torqued correctly.
- Grease is evenly distributed across all bearing surfaces.
If all criteria are met, your Campagnolo Bora One hub is correctly set up and ready to deliver its signature smoothness and performance.
Conclusion
A misadjusted Campagnolo Bora One hub may seem minor, but it can quickly compromise performance, efficiency, and component lifespan. Correct setup requires attention to bearing preload, alignment, and lubrication. By following precise installation procedures and avoiding common mistakes, you can ensure your Bora One hub operates at its full potential—delivering the quiet, smooth, and efficient performance that Campagnolo hubs are known for.