6024-MA (brass cage) bearing: complete specifications & equivalents
The 6024-MA is a ISO 15 radial bearing sized 120 x 180 x 28 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 120 mm |
| Outer diameter D | 180 mm |
| Width B | 28 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 88.4 kN |
| Basic static load rating C0 | 80 kN |
| Fatigue load limit Pu | 2.75 kN |
| Reference speed (thermal) | 7500 rpm |
| Limiting speed (mechanical) | 6300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 2450 g |
| Manufacturer designation | 6024 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 & 6000-series range
| Bore d | 4.724 in |
|---|---|
| Outer diameter D | 7.087 in |
| Width B | 1.102 in |
| ISO bore code | 24 |
| Radial section height (D−d)/2 | 30 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) | 30 of 61 |
| Bore above smallest 6000-series size | 116 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6024-2RS-NSK | NSK | full Dimensions and internal design equivalent — standard interchange. | NSK counterpart NSK 6024DDU on the same 120×180×28 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6024-RSR | NSK | full Dimensions and internal design equivalent — standard interchange. | NSK counterpart NSK 6024VV on the same 120×180×28 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6024-ZZ-NSK | NSK | full Dimensions and internal design equivalent — standard interchange. | NSK counterpart NSK 6024ZZ on the same 120×180×28 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6024-NSK | NSK | full Dimensions and internal design equivalent — standard interchange. | NSK counterpart NSK 6024 on the same 120×180×28 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6024-NTN | NTN | full Dimensions and internal design equivalent — standard interchange. | NTN counterpart 6024 on the same 120×180×28 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6024-2RS-NTN | NTN | full Dimensions and internal design equivalent — standard interchange. | NTN counterpart 6024LLU on the same 120×180×28 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6024-RSR-NTN | NTN | full Dimensions and internal design equivalent — standard interchange. | NTN counterpart 6024LLB on the same 120×180×28 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6024-ZZ-NTN | NTN | full Dimensions and internal design equivalent — standard interchange. | NTN counterpart 6024ZZ on the same 120×180×28 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6024 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6024 (open arrangement) shares the 120×180×28 mm envelope with ratings within 10 % — execution variant of the same size; boundary dimensions interchangeable. |
| 6024-2RS | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6024-2RS1 (two contact elastomer seals) shares the 120×180×28 mm envelope with ratings within 10 % — execution variant of the same size; boundary dimensions interchangeable. |
| 6024-ZZ | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6024-2Z (two non-contact shields) shares the 120×180×28 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 6024-MA model number is decoded
In the 6000-series, the last two digits encode the bore: 6024 carries code 24 = 120 mm (code × 5). The envelope is 120×180×28 mm (4.724×7.087×1.102 in) with a 30.0 mm radial section height, C 88.4 kN, C0 80 kN and Pu 2.75 kN. The open 6024 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 6300 r/min, catalogue mass 2450 g.
Typical equipment & failure modes
Common applications
- agricultural gearboxes
- industrial electric motors
- gearboxes and speed reducers
- centrifugal and positive-displacement pumps
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
- Mount by heating the inner ring (max 120 °C) — driving 6024-MA home through the outer ring or balls brinells the raceways.
- At 120 mm bore, C3 clearance is the safe choice when interference fits plus temperature rise consume the CN clearance; a hot tight bearing with no residual clearance fails fast.
- The MA suffix on 6024-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 2450 g quoted mass includes the heavier cage.
- Open 6024-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 6024-MA; 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. 6024-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
- Sealed SKF units are filled with a lithium-based grease for general service; food-grade, low-temperature and high-temperature fills are order options and are not field-interchangeable once the unit is sealed.
- SKF date-codes its packaging, and greased sealed or shielded bearings carry a finite shelf life: rotate stock first-in-first-out and store boxes dry, cool and away from vibration.
Frequently asked questions
What are the dimensions of 6024-MA?
The SKF 6024 MA measures 120 mm bore × 180 mm OD × 28 mm width (4.724 × 7.087 × 1.102 in), mass about 2450 g. It is open, with no shields or seals.
How does the bore code in 6024 work?
The final two digits of 6024 are bore code 24, multiplied by 5 to give 120 mm.
Which fits should I use for 6024-MA?
With a rotating inner ring use roughly m6 on the shaft and H7 in the 180 mm housing; reverse the interference if the outer ring rotates.
How heavy is 6024-MA?
Catalogue mass is 2450 g for 6024 MA; seal and cage executions of the same envelope differ by a few grams.
What internal clearance does 6024-MA have?
Standard supply is normal CN radial clearance unless a suffix states otherwise; for tight fits or hot shafts SKF lists the C3 execution of the same size — the residual clearance left after mounting is what governs running life.
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.