6704 Deep Groove Ball Bearings
| 6704 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 6704 | Ball Number | 21 |
| d | 20 | Ball Size | 1.588 |
| D1 | 27 | Dynamic Load Co(N) | 1040 |
| B | 4 | Static Load Cor(N) | 730 |
| R | 0.2 | Grease Speed | 23000 |
| Weight(Kg) | 0.0059 | Oil Speed | 28000 |
6704 Deep Groove Ball Bearing | Open, ZZ, 2RS Thin-Wall Precision Bearings
The 6704 deep groove ball bearing is a high-precision thin-wall component in the 6700 series, optimized with upgraded raceway structure and reinforced rolling elements for improved stability and load capacity compared to smaller thin-wall models. This single-row thin-wall bearing features an ultra-slim lightweight design, perfectly solving limited installation space for compact precision mechanical systems while maintaining excellent anti-fatigue performance and low-friction high-speed operation. It stably supports long-term ultra-quiet operation under light and medium cyclic loads, serving as a core rotary part for slim electromechanical equipment. The 6704 series provides three mainstream industrial configurations: open type, 6704ZZ double metal shield type and 6704-2RS double rubber sealed type, with five industrial-grade materials to meet diverse economical, sanitary, wear-resistant and anti-corrosion precision application demands.
6704 Open / ZZ / 2RS Structural Features
6704 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 convenient regular grease replacement and daily maintenance without generating extra rotational resistance. Suitable for clean, dry indoor workshops and fully enclosed slim precision machinery, it retains stable running accuracy and consistent performance during long-cycle light and medium-load operation.
6704ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this professional dust-proof bearing effectively isolates fine dry dust, tiny floating particles and micro workshop debris. The non-contact design preserves original high-speed precision and rotational smoothness with minimal friction loss. Featuring reliable long-term durability and excellent cost performance, 6704ZZ bearings are widely applied in dry precision automation equipment, slim drive motors, high-precision electronic devices and compact transmission systems.
6704-2RS 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 and mild outdoor working conditions for compact precision electromechanical equipment.
6704 Bearing Material Performance
Carbon Steel: High cost-performance standard industrial material with uniform hardness and stable anti-fatigue properties. It delivers reliable wear resistance and smooth high-speed rotation for conventional precision equipment, offering optimal cost performance for mass electronic products and general industrial batch applications.
304 Stainless Steel: 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 micro equipment, sanitary machinery and daily slim precision 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 precision accessories, sanitary processing equipment 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 precision operation.
440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance and structural stability. It maintains precise and stable operation under complex wear and corrosive environments, customized for high-end slim precision industrial and electronic equipment.
Core Advantages And Industrial Applications
The 6704 deep groove ball bearing integrates ultra-thin lightweight design, space-saving installation, ultra-low noise and stable high-speed precision performance. Three diversified sealing structures and five professional material grades fully cover economical, anti-rust, wear-resistant and anti-corrosion precision application scenarios. It is extensively used in slim precision drive motors, miniature precision instruments, consumer electronics, smart device components, small household appliances, miniature medical devices, automated precision accessories and food processing micro machinery, providing compact, low-maintenance and high-efficiency precision rotation solutions for modern space-limited precision mechanical systems.
