6064-M bearing: complete specifications & equivalents
The 6064-M is a ISO 15 radial bearing sized 320 x 480 x 74 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 320 mm |
| Outer diameter D | 480 mm |
| Width B | 74 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 371 kN |
| Basic static load rating C0 | 540 kN |
| Fatigue load limit Pu | 11.4 kN |
| Reference speed (thermal) | 2600 rpm |
| Limiting speed (mechanical) | 2200 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 46000 g |
| Manufacturer designation | 6064 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 | 12.598 in |
|---|---|
| Outer diameter D | 18.898 in |
| Width B | 2.913 in |
| ISO bore code | 64 |
| Radial section height (D−d)/2 | 80 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) | 44 of 61 |
| Bore above smallest 6000-series size | 316 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6064 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | NTN bearing NTN 6064 on the same 320×480×74 mm envelope, but catalogue C/C0 differ (371/540 kN vs 410/530 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 6064-M model number is decoded
In the 6000-series, the last two digits encode the bore: 6064 carries code 64 = 320 mm (code × 5). The envelope is 320×480×74 mm (12.598×18.898×2.913 in) with a 80.0 mm radial section height, C 371 kN, C0 540 kN and Pu 11.4 kN. The open 6064 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 2200 r/min, catalogue mass 46000 g.
Typical equipment & failure modes
Common applications
- space-constrained gearboxes
- clutch and transmission assemblies
- robotics and automation joints
- lay shafts and idler shafts
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- raceway smearing under marginal lubrication at start-up
- electrical pitting in VFD-driven motors without shaft grounding
Selection pitfalls — read before you substitute
- Clearance suffixes follow the seal code in the designation stack (e.g. 6064-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
- Do not preload 6064-M to silence it: a deep-groove ball bearing is not angular-contact, and axial preload only raises temperature and shortens grease life.
- The M suffix on 6064-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 46000 g quoted mass includes the heavier cage.
- Open 6064-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 6064-M; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- Deep-groove geometry tolerates only minutes of misalignment; if the 480 mm housing bore cannot be aligned, move to a self-aligning bearing rather than shimming 6064-M.
Frequently asked questions
What are the dimensions of 6064-M?
The SKF 6064 M measures 320 mm bore × 480 mm OD × 74 mm width (12.598 × 18.898 × 2.913 in), mass about 46000 g. It is open, with no shields or seals.
How does the bore code in 6064 work?
The final two digits of 6064 are bore code 64, multiplied by 5 to give 320 mm.
What load can 6064-M take?
Catalogue values for 6064 M: dynamic C 371 kN, static C0 540 kN, fatigue limit Pu 11.4 kN. Use C in life calculation and C0 for static checks at 320 mm bore.
What is the speed rating of 6064-M?
SKF lists a 2600 r/min thermal reference speed and a 2200 r/min mechanical limiting speed for 6064 M; real limits also depend on lubrication and fits.
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.