6240 bearing
200 × 360 mm · dynamic rating 270 kN · static rating 310 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
6240 specification
| Designation | 6240 |
| Type | Deep groove ball bearing |
| Series | 62 light |
| Bore diameter d | 200 mm |
| Outside diameter D | 360 mm |
| Basic dynamic load rating C | 270 kN (270,000 N) |
| Basic static load rating C0 | 310 kN (310,000 N) |
| Ratio C0/C | 1.15 |
| Speed guide, grease lubrication | 3,200 rpm |
| Life exponent p | 3 (ball 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 6240 means
| Code | Meaning |
|---|---|
| 62 | Deep groove ball bearing, light dimension series |
| 40 | bore code "40" = 40 × 5 = 200 mm |
Basic rating life of the 6240
Basic rating life is L10 = (C / P)p million revolutions, where P is the equivalent dynamic load and p = 3 (ball bearing). For a 6240 with C = 270 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% | 27 | 300 | 150 |
| 5 | 20.0% | 125 | 1,400 | 690 |
| 8 | 12.5% | 512 | 5,700 | 2,800 |
| 12 | 8.3% | 1,728 | 19,200 | 9,600 |
For example, a C / P of 5 means the equivalent load is 54 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the 6240 from other brands
Deep groove ball bearings follow the ISO basic designation system, so the base number 6240 means the same bore (200 mm) and outside diameter (360 mm) at the major makers. Only the suffixes differ. For sealed versions, common suffixes are -2RS1 or -2Z at SKF, -2RSR or -2ZR at FAG, DDU or ZZ at NSK, and LLU or ZZ at NTN. Check clearance class, grease and seal type before substituting. Rotec AI has no brand-specific part numbers catalogued for the 6240 yet; the Cross-Reference tool shows what is catalogued for other sizes.
Where the 6240 is used
Deep-groove ball bearings are chosen for: Radial load with moderate axial load; high-speed compact equipment. Typical equipment: Motors, fans, pumps, gearboxes, auxiliaries. Single/multi-row; insulated or stainless variants available.
Other sizes in the same series
The 6240 is size 31 of 31 in the Rotec AI catalogue for the “62 light” series. The next size down, the 6238, has a bore of 190 mm and a dynamic rating of 255 kN.
Common problems on bearings like the 6240
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 6240
What are the dimensions of a 6240 bearing?
The 6240 has a bore of 200 mm and an outside diameter of 360 mm. It is a deep groove ball bearing. Series: 62 light.
What is the load rating of a 6240 bearing?
In the Rotec AI catalogue the 6240 has a basic dynamic load rating C of 270 kN and a basic static load rating C0 of 310 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a 6240 bearing?
Brand equivalents for the 6240 are not yet in the Rotec AI tables. Use the Cross-Reference tool to check other designations.