6013-M (brass cage) bearing: complete specifications & equivalents
The 6013-M is a ISO 15 radial bearing sized 65 x 100 x 18 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 65 mm |
| Outer diameter D | 100 mm |
| Width B | 18 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 31.9 kN |
| Basic static load rating C0 | 25 kN |
| Fatigue load limit Pu | 1.06 kN |
| Reference speed (thermal) | 14000 rpm |
| Limiting speed (mechanical) | 12000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 440 g |
| Manufacturer designation | 6013 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 | 2.559 in |
|---|---|
| Outer diameter D | 3.937 in |
| Width B | 0.709 in |
| ISO bore code | 13 |
| Radial section height (D−d)/2 | 17.5 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) | 20 of 61 |
| Bore above smallest 6000-series size | 61 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6013-2RS-NSK | NSK | full Dimensions and internal design equivalent — standard interchange. | NSK counterpart NSK 6013DDU on the same 65×100×18 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6013-RSR | NSK | full Dimensions and internal design equivalent — standard interchange. | NSK counterpart NSK 6013VV on the same 65×100×18 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6013-ZZ-NSK | NSK | full Dimensions and internal design equivalent — standard interchange. | NSK counterpart NSK 6013ZZ on the same 65×100×18 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6013-NSK | NSK | full Dimensions and internal design equivalent — standard interchange. | NSK counterpart NSK 6013 on the same 65×100×18 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6013-NTN | NTN | full Dimensions and internal design equivalent — standard interchange. | NTN counterpart 6013 on the same 65×100×18 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6013-2RS-NTN | NTN | full Dimensions and internal design equivalent — standard interchange. | NTN counterpart 6013LLU on the same 65×100×18 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6013-RSR-NTN | NTN | full Dimensions and internal design equivalent — standard interchange. | NTN counterpart 6013LLB on the same 65×100×18 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6013-ZZ-NTN | NTN | full Dimensions and internal design equivalent — standard interchange. | NTN counterpart 6013ZZ on the same 65×100×18 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 6013 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6013 (open arrangement) shares the 65×100×18 mm envelope with ratings within 10 % — execution variant of the same size; boundary dimensions interchangeable. |
| 6013-ZZ | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6013-2Z (two non-contact shields) shares the 65×100×18 mm envelope with ratings within 10 % — execution variant of the same size; boundary dimensions interchangeable. |
| 6013-2RS | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6013-2RS1 (two contact elastomer seals) shares the 65×100×18 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 6013-M model number is decoded
In the 6000-series, the last two digits encode the bore: 6013 carries code 13 = 65 mm (code × 5). The envelope is 65×100×18 mm (2.559×3.937×0.709 in) with a 17.5 mm radial section height, C 31.9 kN, C0 25 kN and Pu 1.06 kN. The open 6013 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 12000 r/min, catalogue mass 440 g.
Typical equipment & failure modes
Common applications
- machine tool auxiliaries
- agricultural gearboxes
- industrial electric motors
- gearboxes and speed reducers
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
- Mount by heating the inner ring (max 120 °C) — driving 6013-M home through the outer ring or balls brinells the raceways.
- Catalogue ratings for 6013-M (C 31.9 kN, C0 25 kN) are SKF figures from PUB BU/P1 17000; geometry revisions can change ratings without changing the designation, so keep the catalogue edition with the specification.
- The M suffix on 6013-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 440 g quoted mass includes the heavier cage.
- Open 6013-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 6013-M; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- Catalogue ratings for 6013-M (C 31.9 kN, C0 25 kN) are SKF figures from PUB BU/P1 17000; geometry revisions can change ratings without changing the designation, so keep the catalogue edition with the specification.
- SKF Explorer deep-groove bearings of this size are produced to tight internal-geometry control; rating revisions between catalogue years do not change the designation, so keep the catalogue edition with the machine documentation.
- A replacement 6013 should go onto inspected seats only: SKF mounting guidance calls for clean, burr-free journals within tolerance, since a large share of early failures traces back to damaged or worn seats.
Frequently asked questions
What are the dimensions of 6013-M?
The SKF 6013 M measures 65 mm bore × 100 mm OD × 18 mm width (2.559 × 3.937 × 0.709 in), mass about 440 g. It is open, with no shields or seals.
How does the bore code in 6013 work?
The final two digits of 6013 are bore code 13, multiplied by 5 to give 65 mm.
What load can 6013-M take?
Catalogue values for 6013 M: dynamic C 31.9 kN, static C0 25 kN, fatigue limit Pu 1.06 kN. Use C in life calculation and C0 for static checks at 65 mm bore.
What is the speed rating of 6013-M?
SKF lists a 14000 r/min thermal reference speed and a 12000 r/min mechanical limiting speed for 6013 M; real limits also depend on lubrication and fits.
What is the difference between 6013-M and a same-bore 62-series bearing?
Section height differs: 6013-M has a 17.5 mm radial section and C 31.9 kN; always match d, D and B — same bore alone never makes two bearings interchangeable.
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.