The Tangeseiki #1718 is a precision cartridge headset bearing designed for modern bicycle steering systems. Engineered for smooth rotation and consistent performance, it supports stable handling under demanding riding conditions.

Bearing Design: This is a sealed cartridge bearing that integrates the races, balls and seals into a single unit. The closed construction helps maintain smooth operation while reducing maintenance requirements over long-term use.

Steering Interface: Built with a 45°/45° angular contact profile, the bearing ensures proper load distribution between the headset cups and the fork steerer. This angle configuration enhances steering accuracy and frame compatibility.

Material and Performance: Manufactured with high-quality bearing steel and precision tolerances, the bearing delivers low friction and reliable durability. It is well suited for road, gravel and performance-oriented bicycles requiring dependable headset function.

Designed for 1.5-inch headset systems, this bearing is commonly used as a lower headset bearing in tapered setups, providing stable support and long-lasting steering performance.

Features

• Sealed Cartridge Headset Bearing: Integrated bearing unit keeps races, balls and seals enclosed for smooth steering with reduced maintenance.
• 45° / 45° Angular Contact Profile: Optimised contact angles ensure correct load distribution between frame and fork for precise steering feel.
• Low-Friction Smooth Rotation: Precision-manufactured bearing surfaces deliver consistent, fluid movement under varied riding conditions.
• Durable Steel Construction: High-quality bearing steel provides long service life and dependable performance in demanding use.
• Designed for Tapered Systems: Commonly used as a lower headset bearing in 1.5-inch tapered headset configurations.

Specifications

• Model: #1718
• Product Type: Headset Cartridge Bearing
• Bearing Profile: Angular Contact
• Seal Type: Sealed
• Material: Bearing Steel
• Inner Diameter: 40 mm
• Outer Diameter: 51.8 mm
• Height: 8 mm
• Compatibility: 1.5" Tapered Headset Systems
• Contact Angle: 45° / 45°