61952-MA bearing: complete specifications & equivalents
The 61952-MA is a ISO 15 radial bearing sized 260 x 360 x 46 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 | 360 mm |
| Width B | 46 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 212 kN |
| Basic static load rating C0 | 270 kN |
| Fatigue load limit Pu | 6.55 kN |
| Reference speed (thermal) | 3600 rpm |
| Limiting speed (mechanical) | 3000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 14500 g |
| Manufacturer designation | 61952 MA |
| 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 & 61900-series range
| Bore d | 10.236 in |
|---|---|
| Outer diameter D | 14.173 in |
| Width B | 1.811 in |
| ISO bore code | 52 |
| Radial section height (D−d)/2 | 50 mm |
| Smallest bore in 61900-series | 3 mm |
| Largest outer diameter in 61900-series | 1120 mm |
| Width range across 61900-series | 3–118 mm |
| Bore position in 61900-series (smallest first) | 42 of 63 |
| Bore above smallest 61900-series size | 257 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 61952 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 61952 (open arrangement) shares the 260×360×46 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 61952-MA model number is decoded
In the 61900-series, the last two digits encode the bore: 61952 carries code 52 = 260 mm (code × 5). The envelope is 260×360×46 mm (10.236×14.173×1.811 in) with a 50.0 mm radial section height, C 212 kN, C0 270 kN and Pu 6.55 kN. The open 61952 MA carries no shields or seals and relies on application lubrication and external sealing. The MA suffix identifies the machined brass cage execution, a separate order number from the pressed-steel version. Limiting speed 3000 r/min, catalogue mass 14500 g. A thin section saves space but leaves little margin for misalignment or shaft deflection.
Typical equipment & failure modes
Common applications
- hoists and winches
- industrial fans and blowers
- mill and kiln auxiliaries
- pulp and paper machinery
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- edge loading from shaft deflection or housing misalignment
- rolling-contact fatigue spalling once the catalogue L10 life is exceeded
Selection pitfalls — read before you substitute
- Clearance suffixes follow the seal code in the designation stack (e.g. 61952-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
- The fatigue load limit is 6.55 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- The MA suffix on 61952-MA 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 14500 g quoted mass includes the heavier cage.
- Open 61952-MA 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 61952-MA; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- Assign interference to the rotating ring: on a conventional shaft-mounted 260 mm position the inner ring rotates, so use a k5/m6 shaft seat with an H7 housing — reverse the logic if the outer ring rotates.
Frequently asked questions
What are the dimensions of 61952-MA?
The SKF 61952 MA measures 260 mm bore × 360 mm OD × 46 mm width (10.236 × 14.173 × 1.811 in), mass about 14500 g. It is open, with no shields or seals.
How does the bore code in 61952 work?
The final two digits of 61952 are bore code 52, multiplied by 5 to give 260 mm.
What is the difference between 61952-MA and a same-bore 62-series bearing?
Section height differs: 61952-MA has a 50 mm radial section and C 212 kN; always match d, D and B — same bore alone never makes two bearings interchangeable.
Which fits should I use for 61952-MA?
With a rotating inner ring use roughly m6 on the shaft and H7 in the 360 mm housing; reverse the interference if the outer ring rotates.
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.