6218
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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6218 Bearing Product Overview & Core Advantages
The 6218 single row deep groove ball bearing represents a fundamental solution for radial load applications requiring reliable performance. Engineered with chrome steel rings and balls combined with a stainless steel cage, this metric bearing delivers robust operation and extended service life. Its open design allows for versatile lubrication options, making it suitable for a wide range of industrial machinery. With an ABEC-1 precision class and standard CN radial internal clearance, it offers a cost-effective balance of precision and durability for general-purpose applications.
6218 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 62 | Deep Groove Ball Bearing Series |
| 18 | Bore Diameter Code (90 mm) |
| Open | No seals or shields; requires external lubrication |
| ABEC-1 | Standard precision tolerance class |
| CN | Normal radial internal clearance |
6218 Bearing Structural Features & Performance Benefits
Optimized Load Capacity: The single row deep groove geometry enables efficient handling of high radial loads (21,604 lbf dynamic / 16,074 lbf static) while accommodating moderate axial loads in both directions.
Precision Engineering: Manufactured to ABEC-1 tolerance standards with controlled bore, OD, and width dimensions, ensuring consistent performance and easy installation in precision assemblies.
Enhanced Durability: The combination of chrome steel rings and balls provides excellent wear resistance, while the stainless steel cage offers superior corrosion resistance and cage stability.
Versatile Operation: Suitable for limiting speeds up to 4,000 rpm and operating temperatures from -30°C to 110°C, accommodating various industrial environments when properly lubricated.
6218 Bearing Typical Application Areas
- Electric Motors and Generators - Primary support for rotor shafts
- Industrial Gearboxes - Supporting gears and shafts in power transmission systems
- Material Handling Equipment - Conveyor rollers and pulley systems
- Agricultural Machinery - Implement drives and wheel hubs
- General Industrial Machinery - Pumps, fans, and blowers requiring reliable radial bearing support
