6218N/C3
6200 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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6218N/C3 Bearing Product Overview & Core Advantages
The 6218N/C3 is a single row deep groove ball bearing engineered for superior performance in demanding industrial applications. This open-type bearing is characterized by its high radial load capacity and optimized internal geometry. A key feature is its C3 radial internal clearance, which makes it exceptionally suitable for applications with thermal expansion or where interference fits are used. The inclusion of a snap ring groove on the outer ring provides secure axial location, simplifying housing design and enhancing operational reliability. Manufactured to ABEC 1 | ISO P0 tolerance standards, it delivers consistent precision for a wide range of machinery.
6218N/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 6218 | Basic bearing designation indicating a single row deep groove ball bearing with a 90mm bore and 160mm outside diameter. |
| N | Denotes a snap ring groove on the outer ring, facilitating secure axial positioning within the housing. |
| C3 | Specifies a greater than normal radial internal clearance. This is critical for applications involving thermal expansion, high speeds, or heavy loads. |
6218N/C3 Bearing Structural Features & Performance Benefits
- High Load Capacity & Rigidity: The single row deep groove construction and chrome steel components (rings, balls, cage) provide a robust design capable of handling high radial dynamic load ratings of 21,604 lbf and static load ratings of 16,074 lbf.
- Optimized for Thermal & Fit Conditions: The C3 clearance is a pivotal feature, preventing bearing seizure or excessive preload in applications where shaft or housing fits, or operational temperatures, cause dimensional changes.
- Simplified Assembly & Axial Location: The snap ring groove (N) eliminates the need for complex housing shoulders or end caps, reducing part count and assembly time while ensuring the bearing remains correctly positioned.
- Broad Operating Range: With a temperature range of -30°C to 120°C and a limiting speed of 4,000 rpm, this bearing offers versatile performance across many industrial environments.
6218N/C3 Bearing Typical Application Areas
The 6218N/C3 is ideally suited for applications requiring reliable radial load support with secure axial location. Common uses include:
- Electric Motors and Generators
- Gearboxes and Power Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment (conveyors, pulleys)
- Agricultural Machinery
