61892-MA bearing: complete specifications & equivalents
The 61892-MA is a ISO 15 radial bearing sized 460 x 580 x 56 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 460 mm |
| Outer diameter D | 580 mm |
| Width B | 56 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 319 kN |
| Basic static load rating C0 | 570 kN |
| Fatigue load limit Pu | 10.6 kN |
| Reference speed (thermal) | 2000 rpm |
| Limiting speed (mechanical) | 1600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 35000 g |
| Manufacturer designation | 61892 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 & 61800-series range
| Bore d | 18.11 in |
|---|---|
| Outer diameter D | 22.835 in |
| Width B | 2.205 in |
| ISO bore code | 92 |
| Radial section height (D−d)/2 | 60 mm |
| Smallest bore in 61800-series | 1 mm |
| Largest outer diameter in 61800-series | 1820 mm |
| Width range across 61800-series | 1–140 mm |
| Bore position in 61800-series (smallest first) | 55 of 74 |
| Bore above smallest 61800-series size | 459 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 61892 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | NTN bearing NTN 6892 on the same 460×580×56 mm envelope, but catalogue C/C0 differ (319/570 kN vs 350/515 kN) — envelope interchange only after a load check. |
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 61892-MA model number is decoded
In the 61800-series, the last two digits encode the bore: 61892 carries code 92 = 460 mm (code × 5). The envelope is 460×580×56 mm (18.11×22.835×2.205 in) with a 60.0 mm radial section height, C 319 kN, C0 570 kN and Pu 10.6 kN. The open 61892 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 1600 r/min, catalogue mass 35000 g. A thin section saves space but leaves little margin for misalignment or shaft deflection.
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
- electrical pitting in VFD-driven motors without shaft grounding
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- Clearance suffixes follow the seal code in the designation stack (e.g. 61892-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
- Assign interference to the rotating ring: on a conventional shaft-mounted 460 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.
- The MA suffix on 61892-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 35000 g quoted mass includes the heavier cage.
- Open 61892-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 61892-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 460 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 61892-MA?
The SKF 61892 MA measures 460 mm bore × 580 mm OD × 56 mm width (18.11 × 22.835 × 2.205 in), mass about 35000 g. It is open, with no shields or seals.
How does the bore code in 61892 work?
The final two digits of 61892 are bore code 92, multiplied by 5 to give 460 mm.
Which fits should I use for 61892-MA?
With a rotating inner ring use roughly m6 on the shaft and H7 in the 580 mm housing; reverse the interference if the outer ring rotates.
How heavy is 61892-MA?
Catalogue mass is 35000 g for 61892 MA; 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.