The Tangeseiki 1728 is a high-quality cartridge headset bearing engineered for smooth and consistent steering performance. Its sealed cartridge construction helps maintain alignment and rotational efficiency under regular riding conditions.

Optimized for 1-1/2" Headsets: Designed specifically for 1-1/2" sized headsets, this bearing ensures a precise fit within compatible frames and forks. It supports modern headset standards commonly found on performance road, gravel and mountain bikes.

45° x 45° Angular Contact Interface: The 45/45-degree contact angle is optimized for headset applications, allowing the bearing to effectively manage axial and radial loads generated during braking, cornering and rough terrain riding.

Durable and Low-Maintenance Construction: Built with durability in mind, the bearing features a fully sealed design that helps keep out dirt, moisture and contaminants. This results in longer service life and reduced maintenance requirements.

Ideal for replacements or upgrades, the Tangeseiki #1728 delivers dependable steering feel and long-term reliability for riders who value precision and smooth handling.

Features

• Sealed Cartridge Bearing Design: Fully enclosed cartridge construction protects against dirt and moisture for smooth, low-maintenance steering.
• 45° / 45° Angular Contact Interface: Optimised contact angles manage both axial and radial loads during braking, cornering and rough terrain.
• Smooth Low-Friction Rotation: Precision bearing surfaces deliver consistent, fluid steering feel across road, gravel and MTB use.
• Durable Bearing Steel Build: High-quality bearing steel ensures excellent wear resistance and long-term reliability.
• Ideal Replacement or Upgrade: Designed to restore precise steering performance in compatible headset systems.

Specifications

• Model: #1728
• Product Type: Headset Cartridge Bearing
• Bearing Profile: Angular Contact
• Seal Type: Sealed
• Material: Bearing Steel
• Compatibility: 1-1/2” Headset Bearing
• Inner Diameter: 40 mm
• Outer Diameter: 52 mm
• Height: 8 mm
• Contact Angle: 45° / 45°