608 Deep Groove Ball Bearing
| 608 Deep Groove Ball Bearing | |||
|---|---|---|---|
| Part Number | 608 | Ball Number | 9 |
| d | 8 | Ball Size | 3.5 |
| D1 | 22 | Dynamic Load Co(N) | 3320 |
| B | 7 | Static Load Cor(N) | 1360 |
| R | 0.3 | Grease Speed | 32000 |
| Weight(Kg) | 0.011 | Oil Speed | 38000 |
608 Deep Groove Ball Bearing | Open, ZZ, 2RS High-Speed Miniature Bearings
The 608 deep groove ball bearing is a widely used high-spec miniature bearing, serving as an upgraded iteration of the 607 model with optimized internal structure, larger rolling elements and enhanced load-bearing rigidity. This single-row miniature bearing delivers improved radial and axial load capacity, better impact resistance and stable low-friction high-speed operation while retaining a compact, lightweight form factor. It excels in continuous and intermittent precision rotation for micro mechanical systems. To accommodate diverse working environments, the 608 series is available in three core configurations: open type, 608ZZ double metal shield type and 608-2RS double rubber sealed type, with five industrial-grade material options for full-scene industrial customization.
608 Open / ZZ / 2RS Structural Features
608 Open Type: Featuring a fully unsealed open structure, this base variant provides unobstructed heat dissipation and smooth internal grease circulation. It supports fast lubricant replacement and hassle-free routine maintenance with zero extra rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed precision equipment, it maintains consistent high-speed accuracy under standardized maintenance cycles.
608ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this dust-proof bearing effectively blocks fine dry dust, floating particles and micro debris. The non-contact design preserves original high-speed stability and rotational precision without friction loss. Boasting reliable durability and high cost performance, it is perfect for dry production environments, miniature automation systems and general precision transmission machinery.
608-2RS Double Rubber Seals: Built with double-sided contact rubber seals, this fully sealed model achieves comprehensive isolation from moisture, splash water, oil stains and corrosive fine dust. It locks internal lubricating grease to prevent leakage and contamination, enabling long-term maintenance-free operation. It reliably adapts to outdoor, humid, dusty and other harsh complex working conditions.
608 Bearing Material Specifications
Carbon Steel: Standard economical industrial material with uniform hardness and excellent anti-fatigue properties. It delivers stable wear resistance and high-speed performance for general micro mechanical equipment, offering outstanding cost performance for mass civilian and industrial applications.
304 Stainless Steel: Universal anti-oxidation stainless steel with superior atmospheric rust resistance. It prevents surface corrosion and precision attenuation in humid and open environments, suitable for light industry, outdoor micro devices and conventional food processing equipment.
316 Stainless Steel: Premium marine-grade corrosion-resistant material with excellent acid, alkali and salt spray tolerance. It withstands mild chemical erosion and coastal high-humidity conditions, ideal for sanitary processing, marine accessories and chemical micro equipment.
420 Stainless Steel: High-toughness martensitic stainless steel balancing moderate corrosion resistance and high surface hardness. It features excellent anti-wear and anti-impact performance, tailored for long-cycle high-precision micro moving parts.
440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance and structural stability. It maintains precise operation under heavy wear and complex corrosive environments, perfect for high-end electronics and industrial precision equipment.
Core Advantages And Industrial Applications
The 608 miniature deep groove ball bearing combines upgraded load capacity, compact size, ultra-low noise and stable high-speed operation. Three sealing structures and five diversified material grades fully cover economical, anti-rust, wear-resistant and anti-corrosion application scenarios. It is widely utilized in precision instruments, micro automation machinery, consumer electronics, small household appliances, medical miniature devices, robot micro joints, food processing accessories and outdoor precision equipment, providing durable, low-maintenance and high-efficiency micro-precision rotation solutions for modern miniature mechanical systems.
