1204 ETN9/C3W64
1200 Series Self Aligning Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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1204 ETN9/C3W64 Bearing Product Overview & Core Advantages
The 1204 ETN9/C3W64 is a double row angular contact ball bearing engineered for applications demanding high precision and robust performance. This metric bearing features an open design and is pre-lubricated for immediate use. Its primary advantage lies in its ability to accommodate significant combined loads—simultaneously handling radial forces and axial loads in both directions. The optimized internal geometry and nylon cage contribute to its high-speed capabilities and smooth operation, making it an ideal choice for compact, high-rigidity arrangements where space is at a premium.
1204 ETN9/C3W64 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1204 | Standard bore diameter (20 mm) and dimension series code. |
| E | Optimized internal design for enhanced load capacity. |
| TN9 | Nylon (polyamide) cage, glass fiber reinforced. Enables quiet operation and is suitable for high speeds. |
| C3 | Greater than normal radial internal clearance. Ideal for applications with thermal expansion or where interference fits are used. |
| W64 | Indicates the bearing is pre-lubricated with a specific grease. |
1204 ETN9/C3W64 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row ball complement and robust construction provide superior stiffness, enabling the bearing to effectively support combined radial and axial loads without sacrificing performance.
Optimized High-Speed Performance: The lightweight TN9 nylon cage reduces centrifugal forces, lowers friction, and contributes to a high limiting speed of 20,000 rpm. This makes it an excellent high-speed bearing solution.
Precision & Reliability: Manufactured from chrome steel for both rings and balls, this bearing ensures consistent performance and long service life. The C3 clearance provides operational flexibility in varying thermal conditions.
Ready-to-Install Convenience: The bearing comes pre-lubricated (W64), simplifying installation and ensuring immediate, reliable operation right out of the box.
1204 ETN9/C3W64 Bearing Typical Application Areas
The 1204 ETN9/C3W64 is ideally suited for a wide range of industrial machinery and precision equipment, including:
- Electric Motors and Small Spindles
- Precision Gearboxes and Transmission Systems
- Pumps and Compressors
- Office Automation Equipment and Precision Instruments
