Black bearing bearing headset 40 × 49 × 6 mm 45° / 45° mm HB-D20

BLACKBEARING D20 headset bearing – 40 × 49 × 6 mm (45°/45°)

The BLACKBEARING D20 is a high-quality sealed cartridge headset bearing designed for bicycle steering systems. Precision manufacturing, low friction, and effective sealing ensure smooth steering performance, long service life, and reliable operation in all riding conditions.

Key features

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

Technical specifications

Compatibility

• Headset systems requiring a 40 × 49 × 6 mm bearing
• 45°/45° angular contact headset standards
• Specific integrated headset systems
• Always verify exact dimensions and contact angles before installation, as headset bearings are not universally interchangeable

In practice

• Ideal replacement for worn or damaged headset bearings
• Provides smooth and precise steering feel
• Sealed design protects against dirt and moisture
• Durable construction ensures long service life
• Suitable for road, gravel, MTB, and e-bike applications