6080-M bearing: complete specifications & equivalents
The 6080-M is a ISO 15 radial bearing sized 400 x 600 x 90 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 400 mm |
| Outer diameter D | 600 mm |
| Width B | 90 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 520 kN |
| Basic static load rating C0 | 865 kN |
| Fatigue load limit Pu | 16.3 kN |
| Reference speed (thermal) | 2000 rpm |
| Limiting speed (mechanical) | 1700 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 87500 g |
| Manufacturer designation | 6080 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 | 15.748 in |
|---|---|
| Outer diameter D | 23.622 in |
| Width B | 3.543 in |
| ISO bore code | 80 |
| Radial section height (D−d)/2 | 100 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) | 48 of 61 |
| Bore above smallest 6000-series size | 396 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6080 | NTN | full Dimensions and internal design equivalent — standard interchange. | NTN counterpart NTN 6080 on the same 400×600×90 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
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 6080-M model number is decoded
In the 6000-series, the last two digits encode the bore: 6080 carries code 80 = 400 mm (code × 5). The envelope is 400×600×90 mm (15.748×23.622×3.543 in) with a 100.0 mm radial section height, C 520 kN, C0 865 kN and Pu 16.3 kN. The open 6080 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 1700 r/min, catalogue mass 87500 g.
Typical equipment & failure modes
Common applications
- robotics and automation joints
- lay shafts and idler shafts
- textile and packaging machinery
- slew and indexing drives
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- fretting corrosion on a creeping shaft or housing seat
- cage damage from running beyond the limiting speed
Selection pitfalls — read before you substitute
- At 400 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 fatigue load limit is 16.3 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- The M suffix on 6080-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 87500 g quoted mass includes the heavier cage.
- Open 6080-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 6080-M; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- Do not preload 6080-M to silence it: a deep-groove ball bearing is not angular-contact, and axial preload only raises temperature and shortens grease life.
Frequently asked questions
What are the dimensions of 6080-M?
The SKF 6080 M measures 400 mm bore × 600 mm OD × 90 mm width (15.748 × 23.622 × 3.543 in), mass about 87500 g. It is open, with no shields or seals.
How does the bore code in 6080 work?
The final two digits of 6080 are bore code 80, multiplied by 5 to give 400 mm.
How heavy is 6080-M?
Catalogue mass is 87500 g for 6080 M; seal and cage executions of the same envelope differ by a few grams.
What load can 6080-M take?
Catalogue values for 6080 M: dynamic C 520 kN, static C0 865 kN, fatigue limit Pu 16.3 kN. Use C in life calculation and C0 for static checks at 400 mm bore.
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.