6248-M bearing: complete specifications & equivalents
The 6248-M is a ISO 15 radial bearing sized 240 x 440 x 72 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 240 mm |
| Outer diameter D | 440 mm |
| Width B | 72 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 358 kN |
| Basic static load rating C0 | 465 kN |
| Fatigue load limit Pu | 10.8 kN |
| Reference speed (thermal) | 3000 rpm |
| Limiting speed (mechanical) | 2600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 51000 g |
| Manufacturer designation | 6248 M |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-27 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-27
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & 6200-series range
| Bore d | 9.449 in |
|---|---|
| Outer diameter D | 17.323 in |
| Width B | 2.835 in |
| ISO bore code | 48 |
| Radial section height (D−d)/2 | 100 mm |
| Smallest bore in 6200-series | 3 mm |
| Largest outer diameter in 6200-series | 540 mm |
| Width range across 6200-series | 2.5–85 mm |
| Bore position in 6200-series (smallest first) | 42 of 45 |
| Bore above smallest 6200-series size | 237 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6248 | NSK | full Dimensions and internal design equivalent — standard interchange. | NSK counterpart NSK 6248 on the same 240×440×72 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the 6248-M model number is decoded
In the 6200-series, the last two digits encode the bore: 6248 carries code 48 = 240 mm (code × 5). The envelope is 240×440×72 mm (9.449×17.323×2.835 in) with a 100.0 mm radial section height, C 358 kN, C0 465 kN and Pu 10.8 kN. The open 6248 M carries no shields or seals and relies on application lubrication and external sealing. The M suffix identifies the machined brass cage execution, a separate order number from the pressed-steel version. Limiting speed 2600 r/min, catalogue mass 51000 g.
Typical equipment & failure modes
Common applications
- large industrial gearboxes
- heavy conveyor drives
- hoists and winches
- industrial fans and blowers
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- brinelling from static overload or hammer blows during mounting
- false brinelling from vibration while the shaft stands idle
Selection pitfalls — read before you substitute
- Catalogue ratings for 6248-M (C 358 kN, C0 465 kN) are SKF figures from PUB BU/P1 17000; geometry revisions can change ratings without changing the designation, so keep the catalogue edition with the specification.
- Catalogue ratings for 6248-M (C 358 kN, C0 465 kN) are SKF figures from PUB BU/P1 17000; geometry revisions can change ratings without changing the designation, so keep the catalogue edition with the specification.
- The M suffix on 6248-M denotes a machined brass cage: it is the choice for high speeds, marginal lubrication and shock/vibration duty, and it is temperature-tolerant where polymer cages are not — the 51000 g quoted mass includes the heavier cage.
- Open 6248-M needs external sealing at the arrangement level; in dusty housings its life depends entirely on those external seals and the regreasing schedule.
- Plan a relubrication interval for 6248-M; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- Deep-groove geometry tolerates only minutes of misalignment; if the 440 mm housing bore cannot be aligned, move to a self-aligning bearing rather than shimming 6248-M.
Frequently asked questions
What are the dimensions of 6248-M?
The SKF 6248 M measures 240 mm bore × 440 mm OD × 72 mm width (9.449 × 17.323 × 2.835 in), mass about 51000 g. It is open, with no shields or seals.
How does the bore code in 6248 work?
The final two digits of 6248 are bore code 48, multiplied by 5 to give 240 mm.
How heavy is 6248-M?
Catalogue mass is 51000 g for 6248 M; seal and cage executions of the same envelope differ by a few grams.
What load can 6248-M take?
Catalogue values for 6248 M: dynamic C 358 kN, static C0 465 kN, fatigue limit Pu 10.8 kN. Use C in life calculation and C0 for static checks at 240 mm bore.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-27. Read our editorial & correction policy.