22312 E bearing
60 × 130 mm · dynamic rating 325 kN · static rating 335 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
22312 E specification
| Designation | 22312 E |
| Type | Spherical roller bearing |
| Series | 223 medium |
| Bore diameter d | 60 mm |
| Outside diameter D | 130 mm |
| Basic dynamic load rating C | 325 kN (325,000 N) |
| Basic static load rating C0 | 335 kN (335,000 N) |
| Ratio C0/C | 1.03 |
| 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 22312 E means
| Code | Meaning |
|---|---|
| 223 | Spherical roller bearing, double row self-aligning, medium series (higher capacity) |
| 12 | bore code "12" = 12 × 5 = 60 mm |
| E | Optimized internal design |
Basic rating life of the 22312 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 22312 E with C = 325 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 65 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the 22312 E
Brand-by-brand equivalents for this exact designation are not shown here. The Cross-Reference tool accepts SKF, FAG, NSK, NTN, Timken, Koyo and NRB designations, and shows what is catalogued.
Where the 22312 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 22312 E belongs to the “223 medium” series. The next size down, the 22311 E, has a bore of 55 mm and a dynamic rating of 280 kN. The next size up, the 22313 E, has a bore of 65 mm and a rating of 357 kN (+10%).
Common problems on bearings like the 22312 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 22312 E
What are the dimensions of a 22312 E bearing?
The 22312 E has a bore of 60 mm and an outside diameter of 130 mm. It is a spherical roller bearing. Series: 223 medium.
What is the load rating of a 22312 E bearing?
In the Rotec AI catalogue the 22312 E has a basic dynamic load rating C of 325 kN and a basic static load rating C0 of 335 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a 22312 E bearing?
Use the Cross-Reference tool in Rotec AI to check brand equivalents for the 22312 E.