22218 E bearing
90 × 160 mm · dynamic rating 331 kN · static rating 375 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
22218 E specification
| Designation | 22218 E |
| Type | Spherical roller bearing |
| Series | 222 light |
| Bore diameter d | 90 mm |
| Outside diameter D | 160 mm |
| Basic dynamic load rating C | 331 kN (331,000 N) |
| Basic static load rating C0 | 375 kN (375,000 N) |
| Ratio C0/C | 1.13 |
| Speed guide, grease lubrication | 5,300 rpm |
| Life exponent p | 10/3 (roller bearing) |
Values come from the Rotec AI bearing catalogue and are indicative. Confirm against the manufacturer's current catalogue before ordering. Not every dimension (such as width) is listed here.
What the designation 22218 E means
| Code | Meaning |
|---|---|
| 222 | Spherical roller bearing, double row self-aligning, light series |
| 18 | bore code "18" = 18 × 5 = 90 mm |
| E | Optimized internal design |
Basic rating life of the 22218 E
Basic rating life is L10 = (C / P)p million revolutions, where P is the equivalent dynamic load and p = 10/3 (roller bearing). For a 22218 E with C = 331 kN, the table shows what that gives at different load levels. It is the ISO 281 basic life only: it does not include lubrication, contamination, misalignment or reliability modifiers.
| C / P | P as share of C | L10 (million rev) | L10 at 1,500 rpm | L10 at 3,000 rpm |
|---|---|---|---|---|
| 3 | 33.3% | 39 | 430 | 220 |
| 5 | 20.0% | 214 | 2,400 | 1,200 |
| 8 | 12.5% | 1,024 | 11,400 | 5,700 |
| 12 | 8.3% | 3,956 | 44,000 | 22,000 |
For example, a C / P of 5 means the equivalent load is 66.2 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the 22218 E from other brands
These parts share the main boundary dimensions of the 22218 E and are commonly used as its equivalent. Published load ratings differ a little between makers because internal designs differ.
| Brand | Part | C (kN) | C0 (kN) | Dynamic rating vs SKF |
|---|---|---|---|---|
| SKF | 22218 E | 331 | 375 | Reference |
| FAG | 22218-E1 | 345 | 375 | 104% of SKF |
Check clearance class, cage, seals and any special suffix before ordering. A matching main size does not guarantee the parts are interchangeable in every detail.
Where the 22218 E is used
Spherical roller bearings are chosen for: Very high radial load with misalignment capability. Typical equipment: Crushers, mills, conveyors, wind main shafts, paper machines. Robust for shock/dust; lubrication and sealing are crucial.
Other sizes in the same series
The 22218 E belongs to the “222 light” series. The next size down, the 22217 E, has a bore of 85 mm and a dynamic rating of 291 kN. The next size up, the 22219 E, has a bore of 95 mm and a rating of 393 kN (+19%).
Common problems on bearings like the 22218 E
Most field failures trace back to lubrication, contamination, fits and alignment rather than the bearing itself. These guides explain how to recognise and prevent them:
Questions about the 22218 E
What are the dimensions of a 22218 E bearing?
The 22218 E has a bore of 90 mm and an outside diameter of 160 mm. It is a spherical roller bearing. Series: 222 light.
What is the load rating of a 22218 E bearing?
In the Rotec AI catalogue the 22218 E has a basic dynamic load rating C of 331 kN and a basic static load rating C0 of 375 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a 22218 E bearing?
Equivalent parts include FAG 22218-E1. Check clearance, cage and seal suffixes before substituting.