698 Deep Groove Ball Bearings
| 698 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 698 | Ball Number | 9 |
| d | 8 | Ball Size | 2.778 |
| D1 | 19 | Dynamic Load Co(N) | 2020 |
| B | 6 | Static Load Cor(N) | 920 |
| R | 0.3 | Grease Speed | 32000 |
| Weight(Kg) | 0.0074 | Oil Speed | 38000 |
698 Deep Groove Ball Bearing | Open, ZZ, 2RS Micro Precision Bearings
The 698 deep groove ball bearing is a high-performance miniature ultra-thin component in the 6900 series, engineered with optimized raceway structures and upgraded rolling element layout to enhance structural rigidity and stable load capacity. Built for ultra-compact micro-space installation constraints, this single-row thin-wall micro bearing retains a lightweight miniaturized form factor while delivering consistent low-friction rotation, superior dimensional stability and reliable anti-fatigue performance. It supports long-term ultra-quiet, high-speed continuous operation under light and medium loads, serving as a core precision rotary component for modern miniaturized electromechanical and electronic systems. The 698 series offers three standard industrial configurations: open type, 698ZZ double metal shield type and 698-2RS double rubber sealed type, with five industrial-grade materials adapting to economical, sanitary, wear-resistant and corrosive complex working environments.
698 Open / ZZ / 2RS Structural Features
698 Open Type: The unsealed open structure enables unobstructed air circulation and efficient heat dissipation, effectively eliminating thermal accumulation during prolonged high-speed micro operation. It supports convenient grease replenishment and tool-free routine maintenance without generating extra rotational resistance. Designed for clean, dry indoor workshops and fully enclosed micro-precision equipment, it maintains stable running accuracy and consistent performance during long-cycle light-load operation.
698ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this professional dust-proof micro bearing effectively blocks fine dry dust, floating micro particles and tiny workshop debris. The non-contact protective design preserves original high-speed precision and rotational smoothness with minimal friction loss. Featuring stable long-term durability and excellent cost performance, 698ZZ bearings are widely applied in dry miniature high-speed motors, precision consumer electronics, smart micro devices and compact micro-transmission systems.
698-2RS 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 micro lubricating grease to prevent leakage, oxidation and aging, realizing long-term maintenance-free operation. It perfectly adapts to humid, dusty and mildly harsh working conditions for portable, outdoor and industrial micro-precision electromechanical equipment.
698 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 micro-precision equipment, providing optimal cost efficiency for mass electronic products and small industrial batch applications.
304 Stainless Steel: Food-grade stainless steel with superior oxidation and rust resistance. It prevents micro corrosion and precision degradation in humid and open environments, ideal for miniature food processing equipment, sanitary micro-devices and daily precision gadgets.
316 Stainless Steel: 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 micro-precision parts, sanitary instruments and chemical miniature equipment.
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 micro dimensional stability during long-term continuous high-speed 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 corrosive environments, customized for high-end miniature ultra-thin precision industrial and electronic equipment.
Core Advantages And Industrial Applications
The 698 deep groove ball bearing features an ultra-compact micro-size structure, lightweight ultra-thin design, 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 micro-precision application scenarios. It is extensively used in miniature precision motors, smart wearable devices, consumer electronics, small household appliances, micro medical devices, automated micro-components and light-duty sanitary machinery, providing compact, low-maintenance and high-efficiency precision rotation solutions for modern micro-space limited miniaturized mechanical systems.
