4218 ATN9
Double Row Deep Groove Ball Bearings
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4218 ATN9 Bearing Product Overview & Core Advantages
The 4218 ATN9 is a double row angular contact ball bearing engineered for demanding applications requiring high rigidity and reliable performance. This metric bearing is designed to accommodate significant combined loads (radial and axial loads) simultaneously, making it an ideal solution for compact designs where space is at a premium. Manufactured with a Nylon cage (designated by the TN9 suffix), it is optimized for high-speed operation, offering smooth rotation and reduced friction. Its open design and precision ABEC-1 tolerance ensure consistent performance in high-reliability scenarios.
4218 ATN9 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 4218 | Standard bearing designation indicating a 90mm bore, 160mm OD, and 40mm width. |
| A | Signifies a 30° contact angle, optimized for handling higher axial loads. |
| TN9 | Indicates a glass fiber reinforced Nylon 66 cage, which contributes to lower weight, quieter operation, and superior performance at high speeds. |
4218 ATN9 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior radial and axial stiffness, enabling the bearing to support substantial combined loads without significant deflection. With a dynamic load rating of 25,200 lbf and a static load rating of 27,450 lbf, it is built for durability.
- Optimized High-Speed Performance: The lightweight TN9 Nylon cage minimizes centrifugal forces and ensures stable operation at the limiting speed of 6,300 rpm, reducing vibration and heat generation.
- Precision & Reliability: Manufactured to ABEC-1 precision standards with a controlled C0 radial internal clearance (0.012mm to 0.036mm), this bearing delivers consistent accuracy and smooth running.
- Material Integrity: Constructed from Chrome Steel for both rings and balls, it offers excellent wear resistance and a long operational life within a temperature range of -30°C to 110°C.
4218 ATN9 Bearing Typical Application Areas
This double row angular contact ball bearing is widely used in industrial machinery requiring robust performance and high rigidity. Key applications include:
- Machine Tool Spindles
- Industrial Gearboxes
- Pumps and Compressors
- Material Handling Equipment
- Precision Agricultural Machinery
