The Blackbearing B3 61902-2RS/6902-2RS Bearing 15x28x7mm is designed to deliver smooth and consistent performance across all road conditions. Built with intermediate-grade precision, it ensures durability and efficiency for everyday cycling needs.

OEM-Grade Compatibility: Commonly installed as original equipment on many bikes, this bearing serves as a 100% compatible replacement. It maintains your bike’s original smoothness and reliability, ensuring easy installation and long-term dependability.

Durable Chrome Steel Construction: Manufactured using SAE52100 chrome steel balls and rings, the B3 bearing offers excellent hardness and resistance to wear. The chrome steel cage adds rigidity and stability, enabling consistent performance under varying loads.

Smooth and Long-Lasting Performance: Pre-lubricated with high-quality grease, the B3 61902-2RS Bearing minimizes friction and enhances rolling smoothness. Equivalent to the 6902-2RS model, the updated 61902-2RS reference guarantees the same precision fit and reliable performance for cycling enthusiasts.

Equipped with “2RS” double seals, the bearing effectively blocks out water, dust, and grime. This ensures internal cleanliness and prolonged bearing life, even under harsh weather or road conditions.

Features

• OEM-Grade Compatibility: Designed as a direct 100% replacement for original bearings, ensuring precise fitment and consistent smoothness across all bikes.
• Durable Chrome Steel Construction: SAE52100 chrome steel balls and rings deliver excellent hardness, wear resistance and dependable load performance.
• Reinforced Chrome Steel Cage: Provides superior rigidity and balance for stable, long-term operation under varied cycling conditions.
• Double-Sealed for Protection: Equipped with 2RS seals that prevent dust, water and debris ingress, extending bearing life and reducing maintenance.
• Pre-Lubricated for Smooth Rotation: Factory-filled with premium grease to minimize friction, delivering long-lasting, fluid pedaling efficiency.

Specifications

• Product Number: UB-6902-B3
• Seal Type: Double Sealed (2RS)
• Dimensions: 15 x 28 x 7 mm
• Bearing Inner Diameter: 15 mm
• Bearing Outer Diameter: 28 mm
• Thickness: 7 mm