Black Bearing bottom bracket steel bearing T47 threaded 86 - 92 mm SRAM DUB 28.99 mm spindle BB-T47-86/92-D-B5

BLACKBEARING T47 86/92 DUB B5 Bottom Bracket

The BLACKBEARING BB-T47-86/92-D-B5 is a threaded bottom bracket designed for T47 frames with an 86–92 mm shell width and SRAM DUB cranksets with a 28.99 mm spindle. It uses B5 steel bearings, offering reliable performance, smooth rotation, and good durability for everyday and sport use.

Key Features

• T47 threaded bottom bracket standard
• Compatible with SRAM DUB 28.99 mm spindle cranksets
• B5 steel bearings (standard steel version, not stainless or ceramic)
• Smooth and stable operation
• Durable and serviceable construction
• Suitable for road, gravel, and MTB use
• Threaded design for secure, creak-free installation

Technical Specifications

Compatibility

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

In Practice

The BLACKBEARING T47 DUB B5 Bottom Bracket is a reliable, everyday-performance solution. The B5 steel bearings provide smooth pedaling and consistent durability, while the threaded T47 system ensures a solid, creak-free installation suitable for road, gravel, and MTB use.