1218/C4
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/C4 Bearing Product Overview & Core Advantages
The 1218/C4 is a double row angular contact ball bearing designed for applications requiring high radial load capacity and precise operation. This metric bearing features an open design, enabling it to handle significant combined loads while maintaining operational stability. Its construction is optimized for high rigidity and reliable performance in demanding industrial environments. The bearing comes pre-lubricated and features a generous C4 radial internal clearance, making it suitable for applications with thermal expansion considerations or where higher operational flexibility is required.
1218/C4 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Significance |
|---|---|---|
| 1218 | Basic bearing designation | Indicates double row angular contact ball bearing with 90mm bore, 160mm OD, 30mm width |
| C4 | Radial internal clearance group | Provides greater than normal clearance for thermal expansion and misalignment accommodation |
1218/C4 Bearing Structural Features & Performance Benefits
Double Row Design: The bearing's double row ball construction provides enhanced radial load capacity and superior rigidity compared to single row bearings, making it ideal for applications requiring stable rotational accuracy.
Premium Material Composition: Constructed from chrome steel rings and balls with a stainless steel cage, this bearing offers excellent durability and corrosion resistance, ensuring long service life even in challenging operating conditions.
Optimized Internal Clearance: The C4 radial clearance specification allows for thermal expansion during operation and accommodates minor misalignments, contributing to reduced stress and extended bearing life.
High-Speed Capability: With a limiting speed of 5,300 rpm and precision-ground components, this bearing delivers reliable performance in high-speed applications while maintaining dimensional stability.
1218/C4 Bearing Typical Application Areas
- Industrial Gearboxes and power transmission systems
- Machine Tool Spindles requiring high radial stiffness
- Material Handling Equipment and conveyor systems
- Industrial Pumps and compressor applications
- Electric Motors and generator assemblies
- Agricultural Machinery and heavy equipment
- Construction Equipment requiring robust bearing solutions
