6804 Deep Groove Ball Bearings
| 6804 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 6804 | Ball Number | 12 |
| d | 20 | Ball Size | 3.175 |
| D1 | 32 | Dynamic Load Co(N) | 3920 |
| B | 7 | Static Load Cor(N) | 2450 |
| R | 0.3 | Grease Speed | 22000 |
| Weight(Kg) | 0.016 | Oil Speed | 27000 |
6804 Deep Groove Ball Bearing | Open, ZZ, 2RS Ultra-Thin Precision Bearings
The 6804 deep groove ball bearing is a classic ultra-thin precision model in the 6800 series, featuring an optimized slim cross-section and upgraded raceway structure for balanced rigidity and load capacity. Compared to smaller ultra-thin bearings, the 6804 variant delivers improved medium-load endurance while retaining ultra-lightweight and space-saving advantages, perfectly matching miniaturized precision mechanical systems with limited installation space. It supports long-term stable, low-noise and high-speed operation under light to medium cyclic loads, serving as a core compact rotary component for precision electromechanical equipment. The 6804 series provides three standard industrial configurations: open type, 6804ZZ double metal shield type and 6804-2RS double rubber sealed type, with five industrial-grade materials to adapt to economical, sanitary, wear-resistant and corrosive working scenarios.
6804 Open / ZZ / 2RS Structural Features
6804 Open Type: The unsealed open structure achieves unobstructed air circulation and efficient heat dissipation, effectively avoiding thermal accumulation during prolonged continuous high-speed operation. It allows simple and fast grease replacement and daily maintenance without generating extra rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed precision machinery, it maintains stable running accuracy and consistent performance during long-cycle light and medium-load operation.
6804ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this dust-proof precision bearing effectively blocks fine dry dust, micro floating particles and workshop debris. The non-contact design preserves original high-speed precision and rotational smoothness with minimal friction loss. Featuring reliable long-term durability and superior cost performance, 6804ZZ bearings are widely applied in dry precision automation equipment, miniature drive motors, consumer electronic devices and compact precision transmission systems.
6804-2RS 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 mildly harsh outdoor and workshop working conditions for portable and industrial precision electromechanical devices.
6804 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, providing optimal cost efficiency 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, suitable 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, ideal 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, maintaining accurate dimensional stability during long-term continuous precision 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 ultra-thin precision industrial and electronic equipment.
Core Advantages And Industrial Applications
The 6804 deep groove ball bearing integrates ultra-thin space-saving structure, lightweight design, stable medium-load capacity, ultra-low noise and durable 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 miniature precision motors, smart wearable devices, consumer electronics, small household appliances, miniature medical devices, automated precision accessories and light-duty food processing machinery, providing compact, low-maintenance and high-efficiency precision rotation solutions for modern miniaturized precision mechanical systems.
