30240 bearing
200 × 360 mm · dynamic rating 845 kN · static rating 1120 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
30240 specification
| Designation | 30240 |
| Type | Tapered roller bearing |
| Series | 302 standard-angle |
| Bore diameter d | 200 mm |
| Outside diameter D | 360 mm |
| Basic dynamic load rating C | 845 kN (845,000 N) |
| Basic static load rating C0 | 1120 kN (1,120,000 N) |
| Ratio C0/C | 1.33 |
| Speed guide, grease lubrication | 1,700 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 30240 means
| Code | Meaning |
|---|---|
| 302 | Tapered roller bearing, standard contact angle series |
| 40 | bore code "40" = 40 × 5 = 200 mm |
Basic rating life of the 30240
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 30240 with C = 845 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 169 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the 30240
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 30240 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 30240 is size 28 of 28 in the Rotec AI catalogue for the “302 standard-angle” series. The next size down, the 30238, has a bore of 190 mm and a dynamic rating of 763 kN.
Common problems on bearings like the 30240
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 30240
What are the dimensions of a 30240 bearing?
The 30240 has a bore of 200 mm and an outside diameter of 360 mm. It is a tapered roller bearing. Series: 302 standard-angle.
What is the load rating of a 30240 bearing?
In the Rotec AI catalogue the 30240 has a basic dynamic load rating C of 845 kN and a basic static load rating C0 of 1120 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a 30240 bearing?
Brand equivalents for the 30240 are not yet in the Rotec AI tables. Use the Cross-Reference tool to check other designations.