BLACKBEARING UB-6903-CS Ceramic Hybrid Bearing (17 x 30 x 7 mm)
(eg. for some Fulcrum Racing wheels)
EAN: 3760290193550
Part Number: UB-6903-CS
Brand: BLACKBEARING
Type: Hybrid ceramic industrial bearing (6903-2RS / 61903-2RS)
The BLACKBEARING UB-6903-CS is a premium hybrid ceramic bearing engineered specifically for high-performance cycling components. The silicon nitride ceramic balls provide lower rolling resistance, reduced friction, and a significantly extended service life compared to standard steel bearings.
Equipped with 2RS rubber seals, it offers effective protection against dust, water, and dirt, ensuring reliable operation even in demanding weather and riding conditions.
Key Features
- Hybrid ceramic construction (silicon nitride balls)
- Lower rolling resistance and minimal friction
- 2RS dual rubber seals for water and dust protection
- Long service life and excellent corrosion resistance
- Ideal for bicycle hubs, freehub bodies, bottom brackets, and precision components
Technical Specifications
| Brand |
BLACKBEARING |
| Model / Part Number |
UB-6903-CS |
| Standard Size |
6903 / 61903 (2RS) |
| Inner Diameter |
17 mm |
| Outer Diameter |
30 mm |
| Width |
7 mm |
| Type |
Hybrid ceramic bearing |
| EAN |
3760290193550 |
Applications
- Road, MTB, gravel, and triathlon bicycles
- Front and rear wheel hubs, freehub bodies
- Bottom brackets and full-suspension frame pivots
- Bicycle workshop servicing and performance upgrades
