The SKF 22218 EK series consists of high-performance double-row spherical roller bearings engineered to handle severe radial and heavy axial loads in both directions. According to official SKF specifications, the "EK" designation signifies an optimized internal design (E) paired with a 1:12 tapered bore (K), which requires an adapter or withdrawal sleeve for mounting onto cylindrical shafts.
Key Technical Specifications
Official engineering data from the manufacturer documentation shows the following exact parameters:
- Bore Diameter (Inner): 90 mm
- Outside Diameter: 160 mm
- Overall Width: 40 mm
- Dynamic Load Rating: 331 kN (325 kN depending on variation details)
- Static Load Rating: 375 kN
- Limiting Speed: 5,300 rpm
- Reference Speed: 3,800 r/min
- Total Weight: 3.33 kg
Key Features & Core Applications
- Self-Alignment: The bearing automatically compensates for shaft deflections and static or dynamic misalignment with virtually zero friction increases.
- Relubrication Support: Built with a standard annular groove and lubrication holes to simplify ongoing maintenance.
- Industrial Uses: Commonly deployed in heavy-duty machinery, industrial conveyor drives, printing presses, and mining equipment.
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