Black bearing bearing 25 × 37 × 7 mm B5 6805-2RS / 61805-2RS UB-6805-B5

BLACKBEARING B5 6805-2RS Bearing – 25 × 37 × 7 mm

EAN: 3760290191969
Part Number: UB-6805-B5
Brand: BLACKBEARING
Type: Deep Groove Ball Bearing (2RS)

The UB-6805-B5 is a premium-quality deep groove ball bearing specifically developed for cycling and precision mechanical applications. The 61805-2RS and 6805-2RS designations refer to the same bearing size. As part of the BLACKBEARING B5 series, it provides excellent rolling performance, low friction, and long service life while offering effective protection against water, dust, and other contaminants.

The 6805-2RS size features a larger inner diameter and higher load capacity, making it an ideal choice for bicycle applications where durability, stability, and reliable performance are essential.

Key Features

• Premium BLACKBEARING B5 quality
• 6805-2RS / 61805-2RS 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-6805-B5 is an excellent choice for applications where higher load capacity, long service life, and reliable operation 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 durable operation even under demanding cycling conditions.