6218 Deep Groove Ball Bearings
| 6218 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 6218 | Ball Number | 13 |
| d | 90 | Ball Size | 22.225 |
| D1 | 160 | Dynamic Load Co(N) | 96800 |
| B | 30 | Static Load Cor(N) | 71500 |
| R | 2 | Grease Speed | 5000 |
| Weight(Kg) | 2.2 | Oil Speed | 6000 |
6218 Deep Groove Ball Bearing | Open, ZZ, 2RS Heavy-Duty Bearings
The 6218 deep groove ball bearing is a large-bore heavy-duty precision component in the 6200 series, designed with enlarged rolling elements and thickened raceway structure to deliver exceptional rigidity, upgraded load capacity and superior anti-fatigue performance. This single-row ball bearing supports stable low-noise, low-friction high-speed rotation under continuous heavy cyclic loads, making it ideal for large electromechanical and industrial transmission systems. The 6218 model is offered in three standard configurations: open type, 6218ZZ double metal shield type and 6218-2RS double rubber sealed type. With five industrial-grade material options, it fully adapts to economic, sanitary, high-wear and corrosive industrial environments for versatile heavy-duty applications.
6218 Open / ZZ / 2RS Structural Features
6218 Open Type: Featuring an unsealed open structure, this bearing ensures unobstructed air circulation and excellent heat dissipation during long-hour high-speed operation. It allows convenient grease replenishment and routine cleaning without adding rotational resistance. Suitable for clean, dry indoor workshops and fully enclosed precision heavy machinery, it maintains consistent running accuracy and long-term operational stability under heavy load cycles.
6218ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this dust-proof variant effectively blocks fine dry dust, floating particles and workshop debris. The non-contact structure preserves original high-speed precision and smooth rotation with minimal friction loss. It delivers reliable durability and high cost performance, widely used in dry automated production lines, large industrial motors, power transmission systems and general heavy electromechanical equipment.
6218-2RS Double Rubber Seals: This fully sealed version adopts double-sided contact rubber seals to isolate moisture, splash water, oil mist and corrosive dust. It securely locks internal lubricating grease to prevent leakage and aging, enabling long-term maintenance-free operation. It is the optimal choice for humid, dusty, splash-prone and outdoor harsh working conditions.
6218 Bearing Material Performance
Carbon Steel: High cost-performance industrial material with uniform hardness and stable anti-fatigue properties. It provides reliable wear resistance and smooth high-speed operation for general heavy-duty machinery, ideal for mass industrial and commercial economical applications.
304 Stainless Steel: Food-grade stainless steel with outstanding rust and oxidation resistance. It maintains precision stability in humid and open environments, perfect for food processing, sanitary equipment and light industrial machinery.
316 Stainless Steel: Marine-grade corrosion-resistant material with strong resistance to acid, alkali and salt spray. It withstands chemical erosion and coastal high humidity, suitable for marine devices, chemical instruments and sanitary processing systems.
420 Stainless Steel: High-toughness martensitic stainless steel combining moderate corrosion resistance and high hardness. It offers excellent wear and impact resistance, ensuring stable dimensional accuracy during long-cycle heavy-load operation.
440 Stainless Steel: Ultra-high hardness stainless steel with superior abrasion resistance. It sustains precise operation under severe wear and corrosive conditions, tailored for high-end heavy-duty industrial precision equipment.
Core Advantages And Industrial Applications
The 6218 deep groove ball bearing features outstanding heavy-load capacity, high structural stability, ultra-low noise and durable high-speed performance. Three sealing designs and five material grades fully cover economical, anti-rust, wear-resistant and anti-corrosion application scenarios. It is widely applied in large industrial motors, engineering machinery, automated transmission systems, precision instruments, food processing equipment, medical devices and outdoor industrial facilities, providing stable, low-maintenance and high-efficiency precision rotation solutions for modern heavy-duty mechanical systems.
