1203 ETN9/W64
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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1203 ETN9/W64 Bearing Product Overview & Core Advantages
The 1203 ETN9/W64 is a double row angular contact ball bearing designed for applications requiring high precision and reliability. This metric bearing features an open design and is pre-lubricated for immediate use. Its double row construction enables it to support significant combined loads, handling both radial forces and bidirectional axial loads simultaneously. With a compact design (17mm bore, 40mm OD, 12mm width), it offers high rigidity and stable performance in space-constrained applications. The combination of chrome steel rings, nylon cage, and specialized lubrication makes it suitable for demanding operational conditions.
1203 ETN9/W64 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 1203 | Standard size designation (17mm bore, 40mm OD) | Standardized dimensions for easy replacement |
| E | Optimized internal design | Enhanced load capacity and performance |
| TN9 | Nylon cage, glass fiber reinforced | Excellent high-speed capability, reduced friction |
| W64 | Special lubricant filling | Extended service life, wide temperature range (-30° to 110°C) |
1203 ETN9/W64 Bearing Structural Features & Performance Benefits
Double Row Design: The dual raceway configuration provides superior rigidity and stability compared to single row bearings, making it ideal for applications with significant moment loads.
Enhanced Load Capacity: With a radial dynamic load rating of 1989 lbf and radial static load rating of 495 lbf, this bearing efficiently handles combined radial and axial loads in both directions.
High-Speed Performance: The TN9 nylon cage ensures smooth operation at limiting speeds up to 24,000 rpm, while the optimized internal geometry minimizes friction and heat generation.
Precision Engineering: Manufactured with chrome steel components and maintaining tight dimensional tolerances (bore: -0.008mm to 0, OD: -0.011mm to 0), this bearing delivers consistent precision performance.
Maintenance-Friendly: Pre-lubricated with W64 specialty grease and featuring CN radial internal clearance, the bearing offers reliable operation without requiring frequent maintenance.
1203 ETN9/W64 Bearing Typical Application Areas
- Electric Motors: Ideal for small to medium-sized motors requiring high-speed operation and combined load capacity
- Precision Machinery: Suitable for machine tool accessories, positioning systems, and automated equipment
- Pumps and Compressors: Excellent for centrifugal pumps and small compressors handling radial and axial forces
- Material Handling Equipment: Used in conveyor systems, rollers, and guidance mechanisms
- Industrial Fans and Blowers: Provides reliable performance in ventilation and air movement applications
