6336-M bearing: complete specifications & equivalents
The 6336-M is a ISO 15 radial bearing sized 180 x 380 x 75 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 180 mm |
| Outer diameter D | 380 mm |
| Width B | 75 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 351 kN |
| Basic static load rating C0 | 405 kN |
| Fatigue load limit Pu | 10.4 kN |
| Reference speed (thermal) | 3600 rpm |
| Limiting speed (mechanical) | 3200 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 41000 g |
| Manufacturer designation | 6336 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 & 6300-series range
| Bore d | 7.087 in |
|---|---|
| Outer diameter D | 14.961 in |
| Width B | 2.953 in |
| ISO bore code | 36 |
| Radial section height (D−d)/2 | 100 mm |
| Smallest bore in 6300-series | 2 mm |
| Largest outer diameter in 6300-series | 500 mm |
| Width range across 6300-series | 3–95 mm |
| Bore position in 6300-series (smallest first) | 36 of 40 |
| Bore above smallest 6300-series size | 178 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6336 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6336 (open arrangement) shares the 180×380×75 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 6336-M model number is decoded
In the 6300-series, the last two digits encode the bore: 6336 carries code 36 = 180 mm (code × 5). The envelope is 180×380×75 mm (7.087×14.961×2.953 in) with a 100.0 mm radial section height, C 351 kN, C0 405 kN and Pu 10.4 kN. The open 6336 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 3200 r/min, catalogue mass 41000 g.
Typical equipment & failure modes
Common applications
- marine deck machinery
- crusher auxiliary drives
- large industrial gearboxes
- heavy conveyor drives
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- edge loading from shaft deflection or housing misalignment
- rolling-contact fatigue spalling once the catalogue L10 life is exceeded
Selection pitfalls — read before you substitute
- The fatigue load limit is 10.4 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- Catalogue ratings for 6336-M (C 351 kN, C0 405 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 6336-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 41000 g quoted mass includes the heavier cage.
- Open 6336-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 6336-M; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- Assign interference to the rotating ring: on a conventional shaft-mounted 180 mm position the inner ring rotates, so use a k5/m6 shaft seat with an H7 housing — reverse the logic if the outer ring rotates.
Frequently asked questions
What are the dimensions of 6336-M?
The SKF 6336 M measures 180 mm bore × 380 mm OD × 75 mm width (7.087 × 14.961 × 2.953 in), mass about 41000 g. It is open, with no shields or seals.
How does the bore code in 6336 work?
The final two digits of 6336 are bore code 36, multiplied by 5 to give 180 mm.
What is the speed rating of 6336-M?
SKF lists a 3600 r/min thermal reference speed and a 3200 r/min mechanical limiting speed for 6336 M; real limits also depend on lubrication and fits.
What is the difference between 6336-M and a same-bore 62-series bearing?
Section height differs: 6336-M has a 100 mm radial section and C 351 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.