ENDURO 6807 RADIAL HEADSET BEARING 35 X 47 X 7

The Enduro 6807 Radial Bearing is a precision-engineered component designed to handle high-load applications in modern bicycle architecture.Measuring 35mm x 47mm x 7mm, this specific size is a mainstay for oversized bottom bracket systems (such as BB30) and large-diameter integrated headsets. While many generic bearings suffer from premature wear under the lateral stresses of cycling, Enduro's radial series is built with high-carbon chromium steel races and high-precision balls to maintain a smooth, "indexed-free" rotation over thousands of kilometers.

This bearing features LLB (Light Contact, Linear Lip) seals, which are the industry standard for balancing protection and performance.The dual-lip design creates a labyrinthian barrier that effectively keeps road grit, moisture, and degreasers away from the internal races, while the light contact ensures that the bearing remains "fast" with minimal rotational drag. Whether you are refreshing a creaky bottom bracket or restoring the smooth steering of a high-end road fork, the 6807 is a "mechanic’s choice" for long-term reliability.

Key Performance Features

• High-Carbon Chromium Steel: Utilizing 52100 steel races that are vacuum-degassed to remove impurities, resulting in a harder, smoother surface that resists pitting.

• Grade 10 High-Precision Balls: Features balls that are spherical within 10/1,000,000", ensuring perfectly even load distribution across the race and reducing internal friction.

• LLB Dual-Lip Seals: Provides a superior seal against the elements without the high friction of heavy-contact seals, keeping the factory grease in and the contaminants out.

• High-Pressure Waterproof Grease: Pre-filled with specialized marine-grade lubricant that is designed to stay in place even under high-vibration and wet-weather conditions.

• Radial Load Optimization: Specifically designed to manage loads perpendicular to the axle, making it ideal for the consistent vertical pressure found in bottom brackets and steering columns.

• Precision-Ground Races: Mirror-polished internal tracks significantly reduce "noise" and vibration, providing a quiet and tactilely smooth feel at the pedals or bars.

Technical Specifications

✅ Why This IS For You

• BB30 & PF30 Users: This is the standard bearing size for many 30mm spindle bottom brackets, providing a direct high-quality replacement for crunchy OEM bearings.

• Integrated Headset Owners: Often used as the lower bearing in oversized tapered headsets, offering a durable solution for smooth, predictable steering.

• Performance Commuters: If you ride in all weather conditions, the LLB seals provide the necessary protection to prevent "corrosion-lock" during wet winters.

❌ Why This May NOT be for you

• Angular Contact Requirements: Some specialized headsets require an Angular Contact Bearing (ACB) with a 36 or 45-degree chamfer. This 6807 is a Radial bearing with flat edges; always verify your frame/fork requirements.

• Extreme Corrosive Environments: For those who live on the coast or ride on salted roads, we recommend the Enduro Stainless Steel version of the 6807 for maximum rust resistance.

BFC Pro Tip

The 6807 is a large bearing with a relatively thin wall, making it sensitive to how it is installed. Never hammer this bearing into a frame or cup! Always use a proper bearing press with drifts that contact the outer race to avoid damaging the internal ball tracks. When installing in a bottom bracket, a thin film of anti-seize or waterproof grease on the outer race will help prevent the dreaded "carbon creak." If you're using this for a headset, remember to check your bearing seats for any grit or burrs that might prevent the bearing from sitting perfectly flat!