6304 Deep Groove Ball Bearings
| 6304 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 6304 | Ball Number | 8 |
| d | 20 | Ball Size | 9.525 |
| D1 | 52 | Dynamic Load Co(N) | 15900 |
| B | 15 | Static Load Cor(N) | 7880 |
| R | 1.1 | Grease Speed | 15000 |
| Weight(Kg) | 0.146 | Oil Speed | 18000 |
6304 Deep Groove Ball Bearing | Open, ZZ, 2RS High-Speed Bearings
The 6304 deep groove ball bearing is a versatile mid-size precision component in the 6300 series, upgraded with optimized raceway geometry and enlarged rolling elements for enhanced load capacity and structural rigidity compared to smaller micro bearings. This single-row deep groove ball bearing delivers stable radial and axial load resistance, excellent anti-fatigue performance and low-friction operation, supporting long-duration, low-noise high-speed rotation under medium cyclic loads. Balancing compact dimensions and reliable mechanical toughness, it serves as a core rotary transmission part for general precision machinery and electromechanical automation systems. The 6304 series is available in three standard configurations: open type, 6304ZZ double metal shield type and 6304-2RS double rubber sealed type, with five industrial-grade materials to suit economical, sanitary, wear-resistant and corrosive working environments.
6304 Open / ZZ / 2RS Structural Features
6304 Open Type: Featuring an unsealed open structure, this bearing enables unobstructed airflow and efficient heat dissipation to prevent thermal accumulation during continuous high-speed operation. It allows fast grease replenishment and straightforward routine maintenance without creating extra rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed precision equipment, it maintains consistent running accuracy and stable performance during long-term medium-load operation.
6304ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this dust-proof bearing effectively blocks fine dry dust, floating micro particles and workshop debris. The non-contact design preserves original high-speed precision and rotational smoothness with minimal friction loss. Boasting reliable durability and excellent cost performance, 6304ZZ bearings are widely applied in dry automated equipment, industrial micro motors, precision transmission systems and general electromechanical devices.
6304-2RS Double Rubber Seals: This fully sealed variant adopts double-sided contact rubber seals to achieve comprehensive isolation from moisture, splash water, oil mist and corrosive fine dust. It securely locks internal lubricating grease to prevent leakage, oxidation and aging, enabling long-term maintenance-free operation. It perfectly adapts to humid, dusty and mild outdoor working conditions for precision electromechanical machinery.
6304 Bearing Material Performance
Carbon Steel: Cost-effective standard industrial material with uniform hardness and stable anti-fatigue properties. It delivers reliable wear resistance and smooth high-speed rotation for conventional medium-load precision equipment, offering optimal cost performance for mass industrial and consumer commercial applications.
304 Stainless Steel: Food-grade stainless steel with outstanding 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 acid, alkali and salt spray tolerance. 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, maintaining 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 sustains precise, stable operation under severe wear and complex corrosive environments, customized for high-end industrial precision equipment.
Core Advantages And Industrial Applications
The 6304 deep groove ball bearing features balanced medium-load capacity, compact structure, 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 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 precision mechanical systems.
