7230 BCBM bearing
150 × 270 mm · dynamic rating 216 kN · static rating 240 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
7230 BCBM specification
| Designation | 7230 BCBM |
| Type | Single-row angular contact ball bearing |
| Series | 72 light |
| Bore diameter d | 150 mm |
| Outside diameter D | 270 mm |
| Basic dynamic load rating C | 216 kN (216,000 N) |
| Basic static load rating C0 | 240 kN (240,000 N) |
| Ratio C0/C | 1.11 |
| 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 7230 BCBM means
| Code | Meaning |
|---|---|
| 72 | Angular contact ball bearing, light dimension series |
| 30 | bore code "30" = 30 × 5 = 150 mm |
| B | 40° contact angle |
| CB | Normal axial internal clearance for a matched pair (universal matching) |
Basic rating life of the 7230 BCBM
Basic rating life is L10 = (C / P)p million revolutions, where P is the equivalent dynamic load and p = 3 (ball bearing). For a 7230 BCBM with C = 216 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 43.2 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the 7230 BCBM from other brands
These parts share the main boundary dimensions of the 7230 BCBM 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 | 7230 BCBM | 216 | 240 | Reference |
| FAG | 7230-B-XL-MP | 245 | 275 | 113% 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 7230 BCBM is used
Angular-contact ball bearings are chosen for: Combined radial and axial load; precision/high-speed arrangements. Typical equipment: Pumps, compressors, spindles, generators, aerospace accessories. Often paired/preloaded; contact angle and lubrication matter.
Other sizes in the same series
The 7230 BCBM belongs to the “72 light” series. The next size down, the 7228 BM, has a bore of 140 mm and a dynamic rating of 199 kN. The next size up, the 7232 BCBM, has a bore of 160 mm and a rating of 255 kN (+18%).
Common problems on bearings like the 7230 BCBM
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 7230 BCBM
What are the dimensions of a 7230 BCBM bearing?
The 7230 BCBM has a bore of 150 mm and an outside diameter of 270 mm. It is a single-row angular contact ball bearing. Series: 72 light.
What is the load rating of a 7230 BCBM bearing?
In the Rotec AI catalogue the 7230 BCBM has a basic dynamic load rating C of 216 kN and a basic static load rating C0 of 240 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a 7230 BCBM bearing?
Equivalent parts include FAG 7230-B-XL-MP. Check clearance, cage and seal suffixes before substituting.