6308 Deep Groove Ball Bearings
| 6308 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 6308 | Ball Number | 8 |
| d | 40 | Ball Size | 15.875 |
| D1 | 90 | Dynamic Load Co(N) | 40800 |
| B | 23 | Static Load Cor(N) | 24000 |
| R | 1.5 | Grease Speed | 9000 |
| Weight(Kg) | 0.630 | Oil Speed | 11000 |
6308 Deep Groove Ball Bearing | Open, ZZ, 2RS High-Speed Bearings
The 6308 deep groove ball bearing is a large-size heavy-duty precision model in the 6300 series, featuring enlarged rolling elements and fully thickened raceway structure for upgraded load capacity and enhanced structural rigidity. This single-row deep groove ball bearing delivers outstanding radial and axial load resistance, excellent anti-fatigue performance and low-friction operation, supporting long-term stable, low-noise high-speed rotation under continuous heavy cyclic loads. Designed for medium and large industrial mechanical systems, it balances robust bearing strength, high operational stability and extended service life. The 6308 series comes with three standard industrial configurations: open type, 6308ZZ double metal shield type and 6308-2RS double rubber sealed type, with five industrial-grade materials to adapt to economical, sanitary, high-wear and corrosive complex industrial working environments.
6308 Open / ZZ / 2RS Structural Features
6308 Open Type: The unsealed open structure ensures unobstructed air circulation and efficient heat dissipation, effectively eliminating thermal accumulation during prolonged high-speed operation. It supports convenient grease replacement and routine daily maintenance without generating extra rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed large precision machinery, it maintains stable running accuracy and consistent performance under long-cycle heavy-load working conditions.
6308ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this heavy-duty 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 long-term durability and excellent cost performance, 6308ZZ bearings are widely applied in dry automated production lines, large industrial heavy-duty motors, precision transmission systems and heavy electromechanical equipment.
6308-2RS Double Rubber Seals: This fully sealed variant adopts double-sided contact rubber seals to comprehensively block 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, splash-prone and harsh outdoor industrial working scenarios for heavy-duty precision equipment.
6308 Bearing Material Performance
Carbon Steel: High cost-performance industrial standard material with uniform hardness and stable anti-fatigue properties. It provides reliable wear resistance and smooth high-speed rotation for heavy-load industrial machinery, delivering optimal cost performance for mass industrial and commercial economical 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, suitable for food processing machinery, sanitary equipment and daily precision mechanical devices.
316 Stainless Steel: Premium marine-grade corrosion-resistant material with strong acid, alkali and salt spray tolerance. It withstands mild chemical erosion and coastal high humidity conditions, ideal 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 heavy-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 heavy-duty precision equipment.
Core Advantages And Industrial Applications
The 6308 deep groove ball bearing features superior heavy-load capacity, ultra-high structural stability, 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 scenarios. It is extensively used in large industrial heavy-duty drive motors, automated transmission systems, engineering machinery, precision instruments, food processing machinery, medical precision devices and outdoor industrial equipment, providing stable, low-maintenance and high-efficiency precision rotation solutions for modern heavy-duty mechanical systems.
