Black bearing bearing 17 × 40 × 12 mm B5 6203-2RS UB-6203-B5

BLACKBEARING B5 6203-2RS Bearing – 17 × 40 × 12 mm

EAN: 3760290196476
SKU: UB-6203-B5
Brand: BLACKBEARING
Type: Deep Groove Ball Bearing (2RS)

The UB-6203-B5 is a premium-quality deep groove ball bearing designed for cycling and precision mechanical applications. The 6203-2RS is a standard bearing size: 17 × 40 × 12 mm. The BLACKBEARING B5 series provides excellent rolling performance, low friction, and long service life while offering effective protection against water, dust, and other contaminants.

The bearing is manufactured with high-quality steel components, precision-machined raceways, reinforced 2RS rubber seals, and premium lubricant. The accurate manufacturing process and controlled assembly ensure smooth operation, reliable performance, and long durability even under demanding conditions.

The double 2RS sealing system prevents moisture and contaminants from entering the bearing while helping to retain lubricant inside for consistent low-friction operation.

Key Features

• Premium BLACKBEARING B5 quality
• 6203-2RS standard
• Double rubber seals (2RS)
• Low rolling resistance
• Excellent protection against water and dust
• Precision manufacturing and assembly
• High-quality steel components
• Filled with premium lubricant
• Smooth and reliable operation
• Long service life

Technical Specifications

Applications

• Wheel hubs
• Bottom bracket systems
• Pedals
• Derailleur pulleys
• Bicycle suspension components
• Other precision rotating parts

In Practice

The UB-6203-B5 is a versatile and reliable bearing, ideal for bicycle applications where precise rotation, low friction, and long service life are essential. The double 2RS sealing system provides excellent protection against external contaminants while maintaining proper lubrication inside the bearing.

Its precise dimensions, quality materials, and durable construction ensure smooth, quiet, and reliable operation over a long service period.