6218-2Z
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
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6218-2Z Bearing Product Overview & Core Advantages
The 6218-2Z is a single row deep groove ball bearing designed for exceptional performance in demanding applications. Engineered with shielded protection on both sides, this precision bearing offers reliable operation and extended service life by effectively excluding contaminants while retaining lubrication. Its robust construction from chrome steel components ensures high durability and the capability to handle significant radial loads. With a P6 tolerance class and factory-preloaded grease lubrication, it delivers consistent, high-precision performance right out of the box, making it an ideal choice for applications requiring high reliability and minimal maintenance.
Model Code Breakdown
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 6218 | Basic Bearing Series & Size | Denotes a single row deep groove ball bearing with a 90mm bore, 160mm OD, and 30mm width. |
| 2Z | Double Shields (Non-Contact) | Provides effective contamination protection on both sides, retaining lubricant and enabling maintenance-free operation in many environments. |
6218-2Z Bearing Structural Features & Performance Benefits
- Optimized Load Capacity: The deep groove raceway and high-quality chrome steel construction enable high radial dynamic load rating (22,706 lbf) and static load capacity (16,523 lbf), ensuring reliable performance under substantial stresses.
- Precision & Speed: Manufactured to P6 tolerance class for superior running accuracy. Combined with a lightweight, durable stainless steel cage, it supports a high limiting speed of 4,300 rpm.
- Sealed & Lubricated for Life: The non-contact 2Z shields protect against particulate contamination. Pre-greased with a high-quality lubricant suitable for a wide temperature range (-30°C to 120°C), ensuring long-term, maintenance-free operation.
- Robust Material Selection: Rings and balls made from chrome steel provide high hardness and wear resistance, while the stainless steel cage offers excellent corrosion resistance and cage integrity.
6218-2Z Bearing Typical Application Areas
This versatile bearing is suited for a wide range of industrial machinery and equipment, including:
- Electric Motors and Generators
- Industrial Gearboxes
- Material Handling Conveyors
- Agricultural Machinery
- Pumps and Compressors
- General Industrial Machinery requiring robust, sealed ball bearing solutions.
