6204 Deep Groove Ball Bearings
| 6204 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 6204 | Ball Number | 8 |
| d | 20 | Ball Size | 7.938 |
| D1 | 47 | Dynamic Load Co(N) | 12800 |
| B | 14 | Static Load Cor(N) | 6620 |
| R | 1 | Grease Speed | 19000 |
| Weight(Kg) | 0.106 | Oil Speed | 23000 |
6204 Deep Groove Ball Bearing | Open, ZZ, 2RS High-Speed Mini Bearings
The 6204 deep groove ball bearing is a popular mid-size miniature precision bearing in the 6200 series, structurally upgraded from the 6203 model with larger rolling elements and reinforced raceway design. It delivers improved radial and axial load capacity, higher structural rigidity and excellent anti-fatigue performance while retaining a compact footprint. This single-row deep groove ball bearing ensures low-friction, quiet and stable high-speed operation under continuous light and medium cyclic loads, widely used in precision micro transmission and lightweight electromechanical systems. The 6204 series comes in three industry-standard configurations: open type, 6204ZZ double metal shield type and 6204-2RS double rubber sealed type, with five industrial-grade materials to suit economic, sanitary, wear-prone and corrosive working environments.
6204 Open / ZZ / 2RS Structural Features
6204 Open Type: Featuring a standard unsealed open structure, this variant enables unobstructed heat dissipation and smooth internal grease circulation during high-speed operation. It allows fast lubricant replacement and straightforward routine maintenance without adding extra rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed precision machinery, it maintains consistent running accuracy and long-term operational stability under regular light-load cycling.
6204ZZ 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. Offering reliable durability and excellent cost performance, it is widely applied in dry automated micro systems, small motors, precision electronics and general miniature transmission equipment.
6204-2RS Double Rubber Seals: This fully sealed model adopts double-sided contact rubber seals to isolate moisture, splash water, oil mist and corrosive fine dust. It securely locks internal lubricating grease to prevent leakage and aging, supporting long-term maintenance-free operation. It is well-suited for humid, dusty and mild outdoor working conditions for miniature and medium-precision devices.
6204 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 general light to medium-load equipment, providing outstanding cost performance for mass consumer electronics and industrial applications.
304 Stainless Steel: Food-grade stainless steel with excellent oxidation and rust resistance. It prevents surface corrosion and precision degradation in humid and open environments, ideal for food processing equipment, light industry and daily precision machinery.
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 conditions, perfect for sanitary equipment, marine micro devices and chemical precision instruments.
420 Stainless Steel: High-toughness martensitic stainless steel combining moderate corrosion resistance and high surface hardness. It offers superior wear and impact resistance, maintaining stable dimensional accuracy during long-cycle continuous operation.
440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance and structural stability. It sustains precise operation under heavy wear and corrosive conditions, ideal for high-end electronic and industrial precision systems.
Core Advantages And Industrial Applications
The 6204 deep groove ball bearing features compact size, optimized load capacity, ultra-low noise and stable high-speed performance. Three diversified sealing structures and five professional material grades fully cover economical, rust-proof, wear-resistant and anti-corrosion application scenarios. It is widely used in micro motors, precision instruments, consumer electronics, intelligent transmission parts, small household appliances, miniature medical devices, automated precision accessories and food processing equipment, delivering durable, low-maintenance and high-efficiency precision rotation solutions for modern light and medium-duty miniature mechanical systems.
