Black bearing bearing 50 × 65 × 7 mm B5 6810-2RS / 61810-2RS UB-6810-B5

BLACKBEARING B5 6810-2RS Bearing – 50 × 65 × 7 mm

EAN: 3760290192119
Part Number: UB-6810-B5
Brand: BLACKBEARING
Type: Deep Groove Ball Bearing (2RS)

The UB-6810-B5 is a premium-quality deep groove ball bearing designed for cycling and precision mechanical applications. The 61810-2RS and 6810-2RS designations refer to the same bearing size: 50 × 65 × 7 mm. As part of the BLACKBEARING B5 series, it delivers excellent rolling performance, low friction, and long service life while providing effective protection against water, dust, and other contaminants.

Manufactured with SAE52100 chrome steel balls (ABEC 5), precision-ground raceways, a steel cage, reinforced 2RS seals, and premium-quality lubricant, the bearing is engineered to provide reliable performance under demanding cycling conditions.

Key Features

• Premium BLACKBEARING B5 quality
• 6810-2RS / 61810-2RS standard bearing
• Double rubber seals (2RS)
• Low rolling resistance
• Effective protection against dust and moisture
• Precision manufacturing and assembly
• SAE52100 chrome steel balls (ABEC 5)
• SAE52100 chrome steel rings with precision-ground raceways
• Steel cage
• Pre-filled with high-quality lubricant
• Long service life and reliable performance
• Reinforced 2RS seals for enhanced water and dust resistance

Technical Specifications

Applications

• Wheel hubs
• Bottom bracket systems
• Pedals
• Suspension pivots
• Derailleur pulleys
• Other precision rotating assemblies

In Practice

The UB-6810-B5 is an excellent choice for applications where high load capacity, durability, and long service life are essential. The double 2RS seals effectively protect the internal components from water and contamination while retaining lubricant inside the bearing. Precision manufacturing, high-quality SAE52100 steel components, and ABEC 5-grade balls ensure smooth, quiet, and reliable operation even under demanding cycling conditions.