6052-M bearing: complete specifications & equivalents
The 6052-M is a ISO 15 radial bearing sized 260 x 400 x 65 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 | 400 mm |
| Width B | 65 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 291 kN |
| Basic static load rating C0 | 375 kN |
| Fatigue load limit Pu | 8.8 kN |
| Reference speed (thermal) | 3200 rpm |
| Limiting speed (mechanical) | 2800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 29000 g |
| Manufacturer designation | 6052 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 & 6000-series range
| Bore d | 10.236 in |
|---|---|
| Outer diameter D | 15.748 in |
| Width B | 2.559 in |
| ISO bore code | 52 |
| Radial section height (D−d)/2 | 70 mm |
| Smallest bore in 6000-series | 4 mm |
| Largest outer diameter in 6000-series | 1150 mm |
| Width range across 6000-series | 4–155 mm |
| Bore position in 6000-series (smallest first) | 41 of 61 |
| Bore above smallest 6000-series size | 256 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6052 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6052 (open arrangement) shares the 260×400×65 mm envelope with ratings within 10 % — execution variant of the same size; boundary dimensions interchangeable. |
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 6052-M model number is decoded
In the 6000-series, the last two digits encode the bore: 6052 carries code 52 = 260 mm (code × 5). The envelope is 260×400×65 mm (10.236×15.748×2.559 in) with a 70.0 mm radial section height, C 291 kN, C0 375 kN and Pu 8.8 kN. The open 6052 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 2800 r/min, catalogue mass 29000 g.
Typical equipment & failure modes
Common applications
- heavy conveyor drives
- hoists and winches
- industrial fans and blowers
- mill and kiln auxiliaries
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- rolling-contact fatigue spalling once the catalogue L10 life is exceeded
- brinelling from static overload or hammer blows during mounting
Selection pitfalls — read before you substitute
- Clearance suffixes follow the seal code in the designation stack (e.g. 6052-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
- Fillet radii must clear the 6052-M chamfer so the 65 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
- The M suffix on 6052-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 29000 g quoted mass includes the heavier cage.
- Open 6052-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 6052-M; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- Clearance suffixes follow the seal code in the designation stack (e.g. 6052-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
Frequently asked questions
What are the dimensions of 6052-M?
The SKF 6052 M measures 260 mm bore × 400 mm OD × 65 mm width (10.236 × 15.748 × 2.559 in), mass about 29000 g. It is open, with no shields or seals.
How does the bore code in 6052 work?
The final two digits of 6052 are bore code 52, multiplied by 5 to give 260 mm.
What is the speed rating of 6052-M?
SKF lists a 3200 r/min thermal reference speed and a 2800 r/min mechanical limiting speed for 6052 M; real limits also depend on lubrication and fits.
What is the difference between 6052-M and a same-bore 62-series bearing?
Section height differs: 6052-M has a 70 mm radial section and C 291 kN; always match d, D and B — same bore alone never makes two bearings interchangeable.
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.