The O-Type Micro Deep Groove Ball Bearing is a masterpiece of precision engineering, specifically developed for ultra-compact mechanical systems where space is at a premium. Featuring a streamlined single-row deep groove raceway, these miniature bearings are designed to deliver exceptional rotational accuracy and high-speed performance. With outer diameters under 9mm for metric series and 9.525mm for imperial series, they provide a seamless balance of radial load support and limited axial capacity, ensuring stability in the most delicate high-tech assemblies.
Engineered for versatility across extreme operating environments, our micro bearings are available in a diverse range of premium materials, including high-grade bearing steel, corrosion-resistant stainless steel, advanced ceramics, and engineering plastics. From high-precision laboratory instruments to high-speed cooling systems and miniature motors, these components are essential for reducing vibration and noise while maintaining structural integrity in modern electronic device manufacturing.
Detailed Parameters
| Outer Diameter | < 9mm (Metric) / < 9.525mm (Imperial) | Material Options | Carbon Steel, Bearing Steel, Stainless Steel, Ceramics, Plastic |
|---|---|---|---|
| Standard Series | 68 Series, 69 Series, 60 Series, Imperial R Series | Sealing Options | ZZ (Steel Plate), RS (Rubber Seals), Open |
| Minimum Bore | Down to 0.6mm | Load Capacity | Supports Radial & Limited Axial Loads |
| Precision Grade | ISO Standard: P0 (Ordinary), P6, P5 (High Precision) | Radial Clearance | CN (Normal), C2 (Small), C3 (Large) |
| Max Speed | Tens of thousands of RPM (Model dependent) | Example (683) | ID: 3mm / OD: 7mm / Width: 2mm |
Key Advantages
Material Versatility
Available in ceramic and stainless steel to provide superior resistance against corrosion and wear in harsh industrial environments.
High-Speed Performance
Optimized raceway geometry allows for extreme RPMs while maintaining critical structural stability and efficiency.
Ultra-High Precision
ISO P5/P6 tolerance grades ensure minimal vibration and maximum rotational accuracy for high-end instruments.
Noise Reduction
Specially engineered for low-noise operation, making them ideal for office equipment and computer cooling fans.
Compact Footprint
Miniature dimensions starting from a 0.6mm inner diameter to meet extreme space constraints in micro-electronics.
Flexible Sealing
Choice of ZZ or RS seals to provide the necessary protection against dust, moisture, and environmental contamination.
Product Gallery
Management Platforms
Quality Control
Rigorous ISO-certified inspection for every batch to guarantee precise tolerance grades and consistency.
Material Sourcing
Strategic procurement of high-grade bearing steel and industrial ceramics from global premium suppliers.
Order Tracking
Real-time logistics monitoring for all miniature bearing shipments to ensure timely global delivery.
Technical Support
Expert consultation to help you select the optimal clearance (C2, CN, C3) for your specific application.
Inventory Mgmt
Optimized stock levels for 68, 69, and 60 series to ensure rapid lead times and immediate availability.
Custom Engineering
Bespoke design services for specialized micro-bearing dimensions and non-standard material requirements.
Investment Return Comparison
| Comparison Feature | Standard Bearings | O-Type Micro Bearings | |
|---|---|---|---|
| Space Efficiency | Large Footprint | Ultra-Compact | Significant Gain |
| Noise Levels | Moderate to High | Ultra-Low | Superior Quietness |
| Rotational Speed | Standard RPM | High-Speed Optimized | Extreme Efficiency |
| Material Range | Limited Steel | Diverse (Ceramic/Plastic) | Versatile Application |
| Precision Level | General Grade | P5/P6 High Precision | Superior Accuracy |
Frequently Asked Questions
Micro bearings are generally defined by an outer diameter of less than 9mm for metric series or less than 9.525mm for imperial series, tailored for miniature machinery.
For environments with high corrosion, stainless steel and ceramics are highly recommended over carbon or bearing steel due to their superior chemical stability.
ZZ seals are steel plate dust covers effective against coarse dust, while RS seals are rubber barriers providing tighter protection against moisture and fine particles.
CN is normal clearance. C2 is for applications requiring a tighter fit/less play, and C3 is for high-temperature or high-speed applications where thermal expansion occurs.
They are widely used in office equipment, micro motors, precision instruments, laser engraving machines, computer cooling fans, and miniature clocks.
Yes, while they are primarily optimized for radial loads, the deep groove structure allows them to withstand specific limited axial loads effectively.
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