1203 M
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 M Bearing Product Overview & Core Advantages
The 1203 M is a metric double row angular contact ball bearing designed for applications requiring high precision and reliable performance. This open-type bearing features a brass cage and is pre-lubricated for immediate operation. Its double row ball construction enables it to support significant radial loads while offering high rigidity and smooth operation. Manufactured from chrome steel, it ensures durability and consistent performance within a temperature range of -30°C to 110°C. The bearing is characterized by its compact design with a 17 mm bore, 40 mm outside diameter, and 12 mm width, making it suitable for space-constrained applications demanding precision and reliability.
1203 M Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1203 | Standard bearing designation indicating a double row angular contact ball bearing with a 17 mm bore diameter and 40 mm outside diameter. |
| M | Signifies the use of a brass cage (machined). This cage type provides excellent strength, dimensional stability, and is suitable for high-speed applications and demanding operating conditions. |
1203 M Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball bearing design provides superior rigidity and enables the bearing to carry substantial radial loads (dynamic rating: 1989 lbf, static rating: 495 lbf). This makes it ideal for applications subject to vibration or heavy loads.
- Optimized for Speed: The precision-machined brass cage (M) ensures smooth ball guidance, reduces friction, and contributes to a high limiting speed of 24,000 rpm, making it a capable high-speed bearing.
- Precision & Reliability: Manufactured from high-grade chrome steel for both rings and balls, the bearing offers high dimensional accuracy (CN radial internal clearance) and long service life. The precise bearing dimensions and tight tolerances ensure consistent performance.
- Ready-to-Use Lubrication: The bearing is pre-lubricated, facilitating easy installation and immediate operation, reducing initial setup time.
1203 M Bearing Typical Application Areas
The 1203 M double row angular contact ball bearing is engineered for a wide range of industrial applications, including:
- Electric Motors and Small Gearboxes
- Precision Instruments and Measuring Devices
- Pumps and Compressors
- Agricultural and Automotive Auxiliary Machinery
- General Industrial Machinery requiring robust radial load support
