Black bearing bearing headset 40 × 51.9 × 8 mm 45° / 45° HB-D9

BLACKBEARING D9 headset bearing – 40 × 51.9 × 8 mm (45°/45°)

EAN: 3760290190795
Part number: HB-D9
Type: Headset bearing (sealed cartridge)

The BLACKBEARING D9 is a high-quality sealed cartridge headset bearing designed for modern integrated bicycle headset systems. It provides smooth steering performance, low friction, and long-lasting durability even under demanding riding conditions.

Key features

• BLACKBEARING headset bearing
• Sealed cartridge construction
• 45°/45° angular contact design
• Low rolling resistance
• Effective protection against dust, mud, and moisture
• Chrome steel races and balls
• Precision-machined surfaces for smooth operation
• Durable grease for extended service life
• Designed for integrated headset systems

Technical specifications

In practice

The D9 bearing ensures stable, smooth steering performance and good resistance to wet and dirty conditions. It is a durable replacement part suitable for road, gravel, MTB, and e-bike use.