The BlackBearing UB-18307-B5 bearing is a range specially designed for cycling, capable of withstanding extreme conditions. The various components are precision-assembled to meet the highest quality standards: reliability, smoothness, performance and rigidity are guaranteed!
To ensure these bearings are compatible with your wheels, remove your old bearings and measure the various dimensions with a calliper.
- SAE52100 chrome-plated steel balls
- SAE52100 chrome-plated steel rings with ground raceway
- Chrome-plated steel cage
- Reinforced "2RS" seals for improved resistance to water and dust
- Premium-quality grease
- Internal diameter: 18 mm
- External diameter: 30 mm
- Thickness: 7 mm
- Part number: UB-18307-B5
- Brand: Black Bearing
Bearing sold individually.
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We value your opinion
Bruno B. 
Perfect, Blackbearing quality, nothing to complain about; mounted on my Mavic Allroad SL, they age well (Translated review)
Arnaud g. Good products, smooth wheels and no play after 500km (Translated review)
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