China Manufacturer Miniature Deep Groove Ball Bearing 681-697 Series (ZZ/2Z/Z)
Premium chrome steel construction for high durability and smooth rotation. Precision-engineered with tight tolerances (±0.001mm) for minimal vibration and noise. Sealed (ZZ/2Z) or shielded (Z) options to prevent dust and moisture, extending bearing lifespan. Ideal for high-speed applications like drones, RC models, small motors, and medical devices. Heat-treated races and hardened steel balls ensure heavy-load capacity. Low-friction design enhances energy efficiency in industrial equipment and automotive components. Direct factory pricing with bulk discounts. Global shipping available for wholesale buyers.