6252-M bearing: complete specifications & equivalents
The 6252-M is a ISO 15 radial bearing sized 260 x 480 x 80 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 260 mm |
| Outer diameter D | 480 mm |
| Width B | 80 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 390 kN |
| Basic static load rating C0 | 530 kN |
| Fatigue load limit Pu | 11.8 kN |
| Reference speed (thermal) | 2600 rpm |
| Limiting speed (mechanical) | 2400 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 65500 g |
| Manufacturer designation | 6252 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 | 10.236 in |
|---|---|
| Outer diameter D | 18.898 in |
| Width B | 3.15 in |
| ISO bore code | 52 |
| Radial section height (D−d)/2 | 110 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) | 43 of 45 |
| Bore above smallest 6200-series size | 257 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 6252-M model number is decoded
In the 6200-series, the last two digits encode the bore: 6252 carries code 52 = 260 mm (code × 5). The envelope is 260×480×80 mm (10.236×18.898×3.15 in) with a 110.0 mm radial section height, C 390 kN, C0 530 kN and Pu 11.8 kN. The open 6252 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 2400 r/min, catalogue mass 65500 g.
Typical equipment & failure modes
Common applications
- industrial fans and blowers
- mill and kiln auxiliaries
- pulp and paper machinery
- marine deck machinery
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- electrical pitting in VFD-driven motors without shaft grounding
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- Do not preload 6252-M to silence it: a deep-groove ball bearing is not angular-contact, and axial preload only raises temperature and shortens grease life.
- Clearance suffixes follow the seal code in the designation stack (e.g. 6252-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
- The M suffix on 6252-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 65500 g quoted mass includes the heavier cage.
- Open 6252-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 6252-M; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- Fillet radii must clear the 6252-M chamfer so the 80 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
Frequently asked questions
What are the dimensions of 6252-M?
The SKF 6252 M measures 260 mm bore × 480 mm OD × 80 mm width (10.236 × 18.898 × 3.15 in), mass about 65500 g. It is open, with no shields or seals.
How does the bore code in 6252 work?
The final two digits of 6252 are bore code 52, multiplied by 5 to give 260 mm.
Which fits should I use for 6252-M?
With a rotating inner ring use roughly m6 on the shaft and H7 in the 480 mm housing; reverse the interference if the outer ring rotates.
How heavy is 6252-M?
Catalogue mass is 65500 g for 6252 M; seal and cage executions of the same envelope differ by a few grams.
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.