1218/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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1218/C3 Bearing Product Overview & Core Advantages
The 1218/C3 is a double row angular contact ball bearing engineered for demanding applications requiring high load capacity and robust performance. Its double row design provides exceptional high rigidity, enabling it to handle significant combined loads—both radial and axial forces—simultaneously. This construction results in a compact and durable precision bearing solution, characterized by a generous C3 radial internal clearance suitable for applications with thermal expansion or where interference fits are used. Its open design, combined with a stainless steel cage, facilitates high-speed operation and reliable performance across a wide temperature range.
1218/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Benefit / Implication |
|---|---|---|
| 1218 | Standard bearing designation indicating bearing dimensions (90mm bore, 160mm OD, 30mm width). | Defines the physical size and basic load ratings. |
| /C3 | Specifies a radial internal clearance greater than the Normal (CN) group. | Accommodates thermal expansion from high speeds or interference fits, preventing premature failure due to excessive preload. |
1218/C3 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement and optimized raceway geometry provide superior high rigidity and enable the bearing to support substantial combined loads, making it ideal for applications with complex force vectors.
- Optimized for Performance: The stainless steel cage ensures low friction, high strength, and excellent corrosion resistance, contributing to the bearing's reliability and high-speed capability.
- Precision Engineering: Manufactured from high-grade chrome steel for both rings and balls, this precision bearing guarantees consistent performance, long service life, and dependable operation under dynamic loads.
- Operational Flexibility: The C3 clearance offers operational tolerance for thermal expansion, while the open seal type allows for customized lubrication regimes to suit specific application needs, including high-speed scenarios.
1218/C3 Bearing Typical Application Areas
- Industrial Gearboxes and Transmissions
- Heavy-Duty Electric Motors
- Material Handling Equipment (e.g., conveyor pulleys)
- Agricultural Machinery
- General Industrial Machinery requiring robust support for combined loads
