6303 Deep Groove Ball Bearings
| 6303 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 6303 | Ball Number | 8 |
| d | 17 | Ball Size | 7.938 |
| D1 | 47 | Dynamic Load Co(N) | 13600 |
| B | 14 | Static Load Cor(N) | 6580 |
| R | 1 | Grease Speed | 17000 |
| Weight(Kg) | 0.116 | Oil Speed | 20000 |
6303 Deep Groove Ball Bearing | Open, ZZ, 2RS High-Speed Bearings
The 6303 deep groove ball bearing is a high-performance precision model in the 6300 series, iteratively upgraded from the 6302 bearing with optimized raceway curvature and enlarged rolling elements. This single-row deep groove ball bearing delivers improved radial and axial load capacity, enhanced structural rigidity and excellent anti-fatigue stability, supporting long-term low-noise, low-friction high-speed operation under medium cyclic loads. With a scientific compact structure and balanced load-bearing performance, it serves as a core rotary transmission component for medium miniature electromechanical and automated precision equipment. The 6303 series offers three mainstream industrial configurations: open type, 6303ZZ double metal shield type and 6303-2RS double rubber sealed type, with five industrial-grade materials to adapt to economic, sanitary, wear-resistant and corrosive complex industrial working environments.
6303 Open / ZZ / 2RS Structural Features
6303 Open Type: The unsealed open structure achieves unobstructed air circulation and efficient heat dissipation, effectively avoiding heat accumulation during continuous high-speed operation. It supports quick grease replacement and simple daily maintenance without increasing extra rotational resistance. Perfect for clean, dry indoor workshops and fully enclosed precision machinery, it maintains stable running accuracy and consistent operational performance during long-cycle medium-load operation.
6303ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this professional dust-proof bearing effectively isolates fine dry dust, floating micro particles and workshop debris. The non-contact design retains original high-speed precision and rotational smoothness with minimal friction loss. Featuring reliable durability and outstanding cost performance, 6303ZZ bearings are widely applied in dry automated production equipment, small industrial drive motors, precision electronic devices and medium-load miniature transmission systems.
6303-2RS Double Rubber Seals: This fully sealed variant adopts double-sided contact rubber seals to comprehensively isolate moisture, splash water, oil mist and corrosive fine dust. It tightly locks internal lubricating grease to prevent leakage, oxidation and aging, realizing long-term maintenance-free operation. It perfectly adapts to humid, dusty and mild outdoor harsh working conditions for precision electromechanical equipment.
6303 Bearing Material Performance
Carbon Steel: Cost-effective standard industrial material with uniform hardness and stable anti-fatigue properties. It provides reliable wear resistance and smooth high-speed rotation for conventional medium-load precision equipment, delivering excellent cost performance for mass consumer electronics and general industrial applications.
304 Stainless Steel: Universal food-grade stainless steel with superior oxidation and rust resistance. It prevents surface corrosion and precision degradation in humid and open environments, ideal for food processing machinery, sanitary equipment and daily precision mechanical devices.
316 Stainless Steel: Premium marine-grade corrosion-resistant material with strong tolerance to acid, alkali and salt spray. It withstands mild chemical erosion and coastal high humidity, suitable for marine auxiliary equipment, sanitary processing devices and chemical precision instruments.
420 Stainless Steel: High-toughness martensitic stainless steel balancing moderate corrosion resistance and high surface hardness. It features stable wear and impact resistance, ensuring consistent dimensional accuracy during long-cycle continuous medium-load operation.
440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance and structural stability. It maintains precise and stable operation under severe wear and complex corrosive environments, customized for high-end industrial and electronic precision equipment.
Core Advantages And Industrial Applications
The 6303 deep groove ball bearing features stable medium-load capacity, compact structural design, ultra-low noise and durable high-speed performance. Three diversified sealing structures and five professional material grades fully cover economical, anti-rust, wear-resistant and anti-corrosion industrial application scenarios. It is extensively used in micro drive motors, precision testing instruments, consumer electronics, smart device accessories, small household appliances, miniature medical devices, automated precision components and food processing machinery, providing stable, low-maintenance and high-efficiency precision rotation solutions for modern medium-load miniature mechanical systems.
