61896-MA bearing: complete specifications & equivalents
The 61896-MA is a ISO 15 radial bearing sized 480 x 600 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 | 480 mm |
| Outer diameter D | 600 mm |
| Width B | 56 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 325 kN |
| Basic static load rating C0 | 600 kN |
| Fatigue load limit Pu | 10.8 kN |
| Reference speed (thermal) | 1900 rpm |
| Limiting speed (mechanical) | 1600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 36500 g |
| Manufacturer designation | 61896 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 | 18.898 in |
|---|---|
| Outer diameter D | 23.622 in |
| Width B | 2.205 in |
| ISO bore code | 96 |
| 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) | 56 of 74 |
| Bore above smallest 61800-series size | 479 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 61896 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | NTN bearing NTN 6896 on the same 480×600×56 mm envelope, but catalogue C/C0 differ (325/600 kN vs 355/540 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 61896-MA model number is decoded
In the 61800-series, the last two digits encode the bore: 61896 carries code 96 = 480 mm (code × 5). The envelope is 480×600×56 mm (18.898×23.622×2.205 in) with a 60.0 mm radial section height, C 325 kN, C0 600 kN and Pu 10.8 kN. The open 61896 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 36500 g. A thin section saves space but leaves little margin for misalignment or shaft deflection.
Typical equipment & failure modes
Common applications
- slew and indexing drives
- large industrial gearboxes
- heavy conveyor drives
- hoists and winches
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- false brinelling from vibration while the shaft stands idle
- fretting corrosion on a creeping shaft or housing seat
Selection pitfalls — read before you substitute
- Clearance suffixes follow the seal code in the designation stack (e.g. 61896-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
- Mount by heating the inner ring (max 120 °C) — driving 61896-MA home through the outer ring or balls brinells the raceways.
- The MA suffix on 61896-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 36500 g quoted mass includes the heavier cage.
- Open 61896-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 61896-MA; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- The fatigue load limit is 10.8 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
Frequently asked questions
What are the dimensions of 61896-MA?
The SKF 61896 MA measures 480 mm bore × 600 mm OD × 56 mm width (18.898 × 23.622 × 2.205 in), mass about 36500 g. It is open, with no shields or seals.
How does the bore code in 61896 work?
The final two digits of 61896 are bore code 96, multiplied by 5 to give 480 mm.
Which fits should I use for 61896-MA?
With a rotating inner ring use roughly m6 on the shaft and H7 in the 600 mm housing; reverse the interference if the outer ring rotates.
How heavy is 61896-MA?
Catalogue mass is 36500 g for 61896 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.