The Tangeseiki #1548 headset bearing is a precision cartridge bearing designed for modern threadless headsets using a 1-1/8" standard. It plays a critical role in ensuring smooth, consistent steering performance across a wide range of riding conditions.

Precision Bearing Design: Engineered with a 45°/45° angular contact profile, this bearing is optimized to handle both radial and axial loads generated during steering. The cartridge-style construction ensures accurate alignment and stable operation over long-term use.

Material and Durability: Manufactured using high-quality bearing steel, the #1548 bearing offers excellent wear resistance and structural integrity. Its sealed design helps protect internal components from dirt, moisture and contaminants, reducing maintenance needs.

Compatibility and Fit: This bearing is specifically sized for 1-1/8" headset systems and is commonly used in integrated and zero-stack headset configurations. It is suitable for both road and mountain bike applications where precise steering control is essential.

Designed for durability and smooth rotation, the Tangeseiki #1548 headset bearing delivers dependable performance for daily riding as well as long-distance use, maintaining consistent steering feel over time.

Features

• Sealed Cartridge Bearing Design: Integrated cartridge construction ensures smooth rotation, accurate alignment and reduced maintenance over long-term use.
• 45° / 45° Angular Contact Geometry: Optimised contact angles handle both radial and axial loads for stable, predictable steering performance.
• Low-Friction Steering Action: Precision bearing surfaces deliver smooth, consistent movement across varied riding conditions.
• Durable Bearing Steel Build: High-quality bearing steel provides excellent wear resistance and structural reliability.
• Optimised for Modern Headsets: Commonly used in integrated and zero-stack headset systems for road and mountain bikes.

Specifications

• Model: #1548
• Product Type: Headset Cartridge Bearing
• Bearing Profile: Angular Contact
• Seal Type: Sealed
• Material: Bearing Steel
• Compatibility: 1-1/8" Threadless Headset Systems
• Inner Diameter: 31.4 mm
• Outer Diameter: 44.8 mm
• Height: 6.3 mm
• Contact Angle: 45° / 45°