6218-2Z/C3WT
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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6218-2Z/C3WT Bearing Product Overview & Core Advantages
The 6218-2Z/C3WT is a single row deep groove ball bearing engineered for robust performance in demanding industrial applications. This shielded bearing is designed to handle significant radial loads while offering protection against contaminant ingress. Its key advantages include a generous C3 radial internal clearance, making it exceptionally suitable for applications involving thermal expansion or where interference fits are used. Manufactured to ABEC 1 | ISO P0 tolerance standards, it provides reliable and consistent operation, ensuring high performance and long service life.
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 and 160mm OD. |
| 2Z | Shielded on Both Sides | Provides effective protection against dust and other contaminants, retaining lubricant. |
| C3 | Radial Internal Clearance | Greater than normal clearance, ideal for applications with high temperatures or tight fits. |
| WT | Wide Temperature Range Grease | Indicates the bearing is pre-lubricated with a grease suitable for a wide operating temperature range (-30°C to 120°C). |
6218-2Z/C3WT Bearing Structural Features & Performance Benefits
Constructed entirely from chrome steel, the 6218-2Z/C3WT offers excellent durability and resistance to wear. The single row deep groove raceway geometry is optimized for high radial load capacity, with a dynamic rating of 21,604 lbf and a static rating of 16,074 lbf. The C3 clearance is a critical feature that accommodates dimensional changes from thermal expansion in the shaft or housing, preventing premature failure due to excessive preload. The inclusion of steel shields (2Z) on both sides provides a robust barrier against contaminants, significantly extending the bearing's operational life in harsh environments. The WT grease ensures reliable lubrication across its specified temperature range, supporting a limiting speed of 4,000 rpm.
6218-2Z/C3WT Bearing Typical Application Areas
This bearing's combination of high load capacity, contaminant protection, and thermal stability makes it a versatile component across numerous industries. Typical applications include:
- Industrial Electric Motors and Gearboxes
- Material Handling Equipment such as conveyor pulleys
- Agricultural Machinery including harvesters and tractors
- Ventilation Systems and Fans
- Construction Equipment and Pumps
