22208 E bearing
40 × 80 mm · dynamic rating 98.5 kN · static rating 90 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
22208 E specification
| Designation | 22208 E |
| Type | Spherical roller bearing |
| Series | 222 light |
| Bore diameter d | 40 mm |
| Outside diameter D | 80 mm |
| Basic dynamic load rating C | 98.5 kN (98,500 N) |
| Basic static load rating C0 | 90 kN (90,000 N) |
| Ratio C0/C | 0.91 |
| Speed guide, grease lubrication | 11,000 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 22208 E means
| Code | Meaning |
|---|---|
| 222 | Spherical roller bearing, double row self-aligning, light series |
| 08 | bore code "08" = 8 × 5 = 40 mm |
| E | Optimized internal design |
Basic rating life of the 22208 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 22208 E with C = 98.5 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 19.7 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the 22208 E from other brands
These parts share the main boundary dimensions of the 22208 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 | 22208 E | 98.5 | 90 | Reference |
| Timken | 22208EJ | 106 | 100 | 108% of SKF |
| FAG | 22208-E1 | 101 | 91 | 103% 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 22208 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 22208 E is size 4 of 19 in the Rotec AI catalogue for the “222 light” series. The next size down, the 22207 E, has a bore of 35 mm and a dynamic rating of 88.8 kN. The next size up, the 22209 E, has a bore of 45 mm and a rating of 104 kN (+6%).
Common problems on bearings like the 22208 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 22208 E
What are the dimensions of a 22208 E bearing?
The 22208 E has a bore of 40 mm and an outside diameter of 80 mm. It is a spherical roller bearing. Series: 222 light.
What is the load rating of a 22208 E bearing?
In the Rotec AI catalogue the 22208 E has a basic dynamic load rating C of 98.5 kN and a basic static load rating C0 of 90 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a 22208 E bearing?
Equivalent parts include Timken 22208EJ; FAG 22208-E1. Check clearance, cage and seal suffixes before substituting.