1204
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 Bearing Product Overview & Core Advantages
The 1204 metric ball bearing is a double row angular contact ball bearing engineered for applications requiring high radial load capacity and compact design. Its double row construction provides superior high rigidity and stability compared to single row alternatives, making it an excellent choice for precision machinery. This bearing is pre-lubricated for immediate use and features a nylon cage, contributing to its smooth operation and suitability for moderate to high-speed applications.
1204 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1204 | Standard metric series designation indicating a 20mm bore and 47mm outside diameter. |
| Open (Seal Type) | No integral seals or shields, allowing for higher speed capability and easier re-lubrication. |
| CN (Clearance) | Standard radial internal clearance for normal operating conditions. |
| Nylon Cage | Lightweight polymer cage for reduced friction, lower noise, and excellent high-speed performance. |
1204 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row ball complement and robust construction enable this bearing to support significant radial loads (dynamic rating: 2858 lbf) while maintaining dimensional stability under stress.
Optimized for Speed: The lightweight nylon cage minimizes centrifugal forces, contributing to a high limiting speed of 20,000 rpm. The open design reduces friction and heat generation.
Precision & Reliability: Manufactured from chrome steel with tight dimensional tolerances on the bore diameter and outside diameter, ensuring consistent performance and long service life in precision assemblies.
Ready-to-Use: The bearing comes pre-lubricated, simplifying installation and providing immediate protection against wear during the initial run-in period.
1204 Bearing Typical Application Areas
- Electric Motors and Small Gearboxes
- Precision Spindles and Machine Tool Accessories
- Industrial Fans and Blowers
- Conveyor System Rollers
- Medical and Dental Equipment
- Office Automation Machines
