6224 bearing
120 × 215 mm · dynamic rating 146 kN · static rating 118 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
6224 specification
| Designation | 6224 |
| Type | Deep groove ball bearing |
| Series | 62 light |
| Bore diameter d | 120 mm |
| Outside diameter D | 215 mm |
| Basic dynamic load rating C | 146 kN (146,000 N) |
| Basic static load rating C0 | 118 kN (118,000 N) |
| Ratio C0/C | 0.81 |
| Speed guide, grease lubrication | 4,000 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 6224 means
| Code | Meaning |
|---|---|
| 62 | Deep groove ball bearing, light dimension series |
| 24 | bore code "24" = 24 × 5 = 120 mm |
Basic rating life of the 6224
Basic rating life is L10 = (C / P)p million revolutions, where P is the equivalent dynamic load and p = 3 (ball bearing). For a 6224 with C = 146 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 29.2 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the 6224 from other brands
These parts share the main boundary dimensions of the 6224 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 | 6224 | 146 | 118 | Reference |
| Timken | 6224 | 155.3 | 131.1 | 106% 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 6224 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 6224 belongs to the “62 light” series. The next size down, the 6222, has a bore of 110 mm and a dynamic rating of 151 kN. The next size up, the 6226, has a bore of 130 mm and a rating of 156 kN (+7%).
Common problems on bearings like the 6224
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 6224
What are the dimensions of a 6224 bearing?
The 6224 has a bore of 120 mm and an outside diameter of 215 mm. It is a deep groove ball bearing. Series: 62 light.
What is the load rating of a 6224 bearing?
In the Rotec AI catalogue the 6224 has a basic dynamic load rating C of 146 kN and a basic static load rating C0 of 118 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a 6224 bearing?
Equivalent parts include Timken 6224. Check clearance, cage and seal suffixes before substituting.