1209 C3
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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1209 C3 Bearing Product Overview & Core Advantages
The 1209 C3 is a double row angular contact ball bearing designed for applications requiring robust performance under combined loads. This metric bearing features an open design without seals, allowing for versatile lubrication options. Its primary advantages include the ability to accommodate significant radial loads while simultaneously handling axial loads in both directions, thanks to its optimized contact angle and double row construction. The C3 radial internal clearance makes it particularly suitable for applications with thermal expansion or where interference fits are used, ensuring reliable operation and high rigidity. Manufactured from high-grade chrome steel for both rings and balls, it delivers excellent durability and long service life in demanding industrial environments.
1209 C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Implication |
|---|---|---|
| 1209 | Basic bearing designation: 45mm bore, 85mm OD, 19mm width | Standard bearing dimensions for medium-duty applications |
| C3 | Radial internal clearance greater than normal | Accommodates thermal expansion and interference fits; reduces operating temperature |
| Open | No seals or shields (as per specification) | Allows for custom lubrication regimes and higher speed capability |
1209 C3 Bearing Structural Features & Performance Benefits
Double Row Design: The two rows of balls provide enhanced load carrying capacity and superior rigidity compared to single row bearings, making it ideal for applications with moment loads or shaft misalignment.
Combined Load Capacity: Engineered to handle substantial radial loads (dynamic rating: 5152 lbf / static rating: 1755 lbf) while simultaneously supporting axial loads in both directions, eliminating the need for complex bearing arrangements.
Nylon Cage Construction: The lightweight nylon cage reduces centrifugal forces, enables smoother operation at higher speeds (limiting speed: 11,000 rpm), and provides excellent resistance to wear and corrosion.
C3 Clearance Advantage: The greater than normal radial internal clearance accommodates thermal expansion in high-temperature applications and compensates for interference fits, preventing premature bearing failure due to excessive preload.
Precision Manufacturing: Manufactured with tight dimensional tolerances (bore: -0.012mm to 0, OD: -0.015mm to 0) ensuring consistent performance and easy installation in precision machinery.
1209 C3 Bearing Typical Application Areas
- Industrial Gearboxes: Provides reliable support for gear shafts under combined radial and axial loads
- Electric Motors: Suitable for medium-sized motor applications requiring high rigidity and speed capability
- Material Handling Equipment: Conveyor systems and pulley assemblies benefiting from its robust load capacity
- Agricultural Machinery: Implements and transmission systems operating in demanding conditions
- General Industrial Machinery: Pumps, compressors, and fans where reliable bearing performance is critical
- Construction Equipment: Components requiring durable bearing solutions with C3 clearance for thermal management
