Black bearing bearing ceramic 18 × 30 × 7 mm B5 18307-2RS eg. Fulcrum Quattro UB-18307-CS

BLACKBEARING Ceramic Hybrid 18307-2RS Bearing – 18 × 30 × 7 mm

EAN: 3760290198357
SKU / Part Number: UB-18307-CS
Brand: BLACKBEARING
Type: Hybrid ceramic deep groove ball bearing (2RS)

The BLACKBEARING UB-18307-CS is a premium-quality hybrid ceramic bearing developed for high-performance cycling applications. The 18307-2RS bearing measures 18 × 30 × 7 mm and is designed for precision rotating components where low friction, smooth operation, and long service life are essential.

The hybrid construction combines steel raceways with silicon nitride (Si₃N₄) ceramic balls. Compared with conventional steel bearings, this design offers reduced friction, improved rolling efficiency, enhanced wear resistance, and extended service life.

The double-sided 2RS rubber seals provide effective protection against dust, moisture, and contaminants while retaining lubricant inside the bearing for smooth and reliable operation.

This bearing may also be suitable for selected Fulcrum wheel models, such as the Fulcrum Racing Quattro Disc, subject to verification of the original bearing dimensions and compatibility with the specific wheel version.

Key Features

• Premium BLACKBEARING quality

• Hybrid ceramic construction

• 18307-2RS standard

• Double-sided rubber seals (2RS)

• Silicon nitride (Si₃N₄) ceramic balls

• Excellent rolling efficiency

• Low friction

• High wear resistance

• Protection against water and dust

• Long service life

Technical Specifications

Applications

• Bicycle hubs

• Freehub mechanisms

• Bottom bracket systems

• Derailleur pulleys

• E-bike components

• Selected Fulcrum wheel models, including the Fulcrum Racing Quattro Disc, subject to compatibility verification

• Other precision rotating components

In Practice

The BLACKBEARING UB-18307-CS is designed for demanding cycling applications where smooth rotation, low friction, and long-term reliability are essential. Its hybrid ceramic construction enhances efficiency and durability compared with conventional steel bearings.

The 18 × 30 × 7 mm dimensions make it suitable for a range of cycling components requiring precise, reliable bearing performance. Always verify the original bearing dimensions and specifications before installation.