Black bearing bearing ceramic 31 × 43 × 7 mm B5 31437-2RS UB-31437-C

BLACKBEARING Ceramic Hybrid 31437-2RS Bearing – 31 × 43 × 7 mm

EAN: 3760290193512
SKU: UB-31437-C
Brand: BLACKBEARING
Type: Hybrid Ceramic Deep Groove Ball Bearing (2RS)

The BLACKBEARING UB-31437-C is a premium-quality hybrid ceramic bearing designed for high-performance cycling applications. The 31437-2RS bearing has dimensions of 31 × 43 × 7 mm and is developed for precision rotating components where low friction, smooth operation, and long service life are essential.

The hybrid construction combines steel races with silicon nitride (Si₃N₄) ceramic balls, providing reduced rolling resistance, improved efficiency, increased wear resistance, and extended durability compared to conventional steel bearings.

The double 2RS rubber sealing system effectively protects the bearing against dust, moisture, and contamination while keeping the lubricant inside for smooth and reliable operation.

Key Features

• Premium BLACKBEARING quality
• Hybrid ceramic construction
• 31437-2RS standard
• Double 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

• Wheel hubs
• Freehub bodies
• Bottom bracket systems
• Derailleur pulleys
• E-bike components
• Other precision rotating components

In Practice

The BLACKBEARING UB-31437-C is designed for demanding cycling applications where smooth rotation, reduced friction, and long-term reliability are essential. The hybrid ceramic construction improves efficiency and durability compared to conventional steel bearings.

With its 31 × 43 × 7 mm dimensions, this bearing is suitable for various premium bicycle components requiring precise fitment, high performance, and reliable operation.