30210 bearing
50 × 90 mm · dynamic rating 93.1 kN · static rating 91.5 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
30210 specification
| Designation | 30210 |
| Type | Tapered roller bearing |
| Series | 302 standard-angle |
| Bore diameter d | 50 mm |
| Outside diameter D | 90 mm |
| Basic dynamic load rating C | 93.1 kN (93,100 N) |
| Basic static load rating C0 | 91.5 kN (91,500 N) |
| Ratio C0/C | 0.98 |
| Speed guide, grease lubrication | 7,500 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 30210 means
| Code | Meaning |
|---|---|
| 302 | Tapered roller bearing, standard contact angle series |
| 10 | bore code "10" = 10 × 5 = 50 mm |
Basic rating life of the 30210
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 30210 with C = 93.1 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 18.62 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the 30210
Brand-by-brand equivalents for this exact designation are not yet in the Rotec AI cross-reference tables. The Cross-Reference tool accepts SKF, FAG, NSK, NTN, Timken, Koyo and NRB designations, and shows what is catalogued.
Where the 30210 is used
Tapered roller bearings are chosen for: Combined radial and axial load; stiffness. Typical equipment: Wheel hubs, gearboxes, rail wheelsets, construction/agri equipment. Usually adjusted/preloaded; paired arrangements common.
Other sizes in the same series
The 30210 is size 9 of 28 in the Rotec AI catalogue for the “302 standard-angle” series. The next size down, the 30209, has a bore of 45 mm and a dynamic rating of 81.6 kN. The next size up, the 30211, has a bore of 55 mm and a rating of 111 kN (+19%).
Common problems on bearings like the 30210
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 30210
What are the dimensions of a 30210 bearing?
The 30210 has a bore of 50 mm and an outside diameter of 90 mm. It is a tapered roller bearing. Series: 302 standard-angle.
What is the load rating of a 30210 bearing?
In the Rotec AI catalogue the 30210 has a basic dynamic load rating C of 93.1 kN and a basic static load rating C0 of 91.5 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a 30210 bearing?
Brand equivalents for the 30210 are not yet in the Rotec AI tables. Use the Cross-Reference tool to check other designations.