Deep Groove Ball Bearing (Miniature)

Miniature deep groove ball bearings inherit the design essence of standard deep groove ball bearings and possess a series of unique advantages due to their tiny size:

Ultra-compact and lightweight: Minimal size (typically outer diameter <30mm, inner diameter <10mm) and extremely light weight, forming the cornerstone of precision miniaturization design.

High precision and high sensitivity: Generally employing high precision grades (such as ABEC-5/P5 and above), ensuring smooth operation, minimal starting torque, and responsiveness to weak drive signals.

Ultra-high speed capability: Due to the small mass and low inertia of the rotating elements, extremely high limiting speeds can be achieved (some models can reach hundreds of thousands of revolutions per minute).

Specialized materials and processes:

Diverse materials: In addition to bearing steel, stainless steel (rust-proof), ceramics (high speed/corrosion-resistant), and engineering plastics (self-lubricating/low cost) are widely used.

Precision manufacturing process: Extremely high requirements are placed on raceway roundness, surface finish, and cleanliness.

Pre-lubrication and integrated sealing: Due to space constraints, re-lubrication is difficult. High-performance grease is typically pre-filled at the factory, and miniature seals (such as 2RS) are provided, achieving maintenance-free operation.

Low friction and low noise: Optimized design and precision manufacturing ensure quiet, smooth operation and low energy consumption.

Standardization and serialization: A complete range of standard series is available, including metric (such as 608, 626) and imperial (R series), facilitating selection and procurement.