Black Bearing bottom bracket stainless steel bearing T47 threaded 86 - 92 mm SRAM DUB 28.99 mm spindle BB-T47-86/92-D-S

BLACKBEARING T47 86/92 DUB B5 Stainless Bottom Bracket

The BLACKBEARING BB-T47-86/92-D-S is a premium threaded bottom bracket designed for T47 frames with an 86–92 mm shell width and SRAM DUB cranksets with a 28.99 mm spindle. Featuring high-quality B5 Stainless (Inox) bearings, it delivers smooth performance, excellent corrosion resistance, and long-lasting durability in all riding conditions.

Key Features

• T47 threaded bottom bracket standard
• Compatible with SRAM DUB 28.99 mm spindle cranksets
• Premium B5 Stainless (Inox) bearings
• Enhanced corrosion resistance
• Low-friction performance
• Improved bearing alignment for smoother operation
• Durable CNC-machined aluminum cups
• Suitable for road, gravel, and MTB applications
• Reliable performance in wet and demanding conditions

Technology Highlights

• B5 Stainless bearings for increased durability and corrosion resistance
• Precision-machined bearing races for smooth rotation
• Reinforced 2RS seals to help protect against water and dirt ingress
• High-quality grease for long service life
• CNC-machined 7075-T6 aluminum construction
• Threaded T47 design for secure installation and reduced creaking

Technical Specifications

Compatibility

• T47 threaded frames
• 86–92 mm bottom bracket shell width
• SRAM DUB cranksets with 28.99 mm spindle

In Practice

The BLACKBEARING T47 86/92 DUB B5 Stainless Bottom Bracket is designed for riders who want the reliability of stainless-steel bearings combined with the stiffness and simplicity of the T47 threaded standard. Its corrosion-resistant bearing system and precision construction ensure smooth pedaling, efficient power transfer, and long-term durability across road, gravel, and mountain bike applications.