W6207-ZZ bearing: complete specifications & equivalents
The W6207-ZZ is a ISO 15 radial bearing sized 35 x 72 x 17 mm (bore x OD x width) with ZZ sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 35 mm |
| Outer diameter D | 72 mm |
| Width B | 17 mm |
| Material | SS440C |
| Seal / shield | ZZ |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 22.1 kN |
| Basic static load rating C0 | 15.3 kN |
| Fatigue load limit Pu | 0.655 kN |
| Reference speed (thermal) | 22000 rpm |
| Limiting speed (mechanical) | 11000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 277 g |
| Manufacturer designation | W 6207-2Z |
| 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 & 6200-series range
| Bore d | 1.378 in |
|---|---|
| Outer diameter D | 2.835 in |
| Width B | 0.669 in |
| ISO bore code | 07 |
| Radial section height (D−d)/2 | 18.5 mm |
| Smallest bore in 6200-series | 3 mm |
| Largest outer diameter in 6200-series | 540 mm |
| Width range across 6200-series | 2.5–85 mm |
| Bore position in 6200-series (smallest first) | 16 of 45 |
| Bore above smallest 6200-series size | 32 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6207-RSR | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | NSK NSK 6207VV shares the 35×72×17 mm envelope but carries different catalogue ratings (22.1/15.3 kN vs 28.2/15.3 kN) — the stainless execution is not a load-rating equivalent. |
| W6207-2RS | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 35×72×17 mm envelope and equivalent catalogue ratings; W 6207-2RS1 is the two contact elastomer seals execution of this size — boundary dimensions interchangeable, only the seal/shield/cage execution differs. |
| W6207 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 35×72×17 mm envelope and equivalent catalogue ratings; W 6207 is the open arrangement execution of this size — boundary dimensions interchangeable, only the seal/shield/cage execution differs. |
| 207 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 35×72×17 mm envelope, but the stainless and chrome-steel executions carry different catalogue ratings (22.1/15.3 kN vs 27.5/22 kN) — envelope match, not a load-rating equivalent; choose by corrosion versus load duty. |
| 207-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 35×72×17 mm envelope, but the stainless and chrome-steel executions carry different catalogue ratings (22.1/15.3 kN vs 27.5/22 kN) — envelope match, not a load-rating equivalent; choose by corrosion versus load duty. |
| 6207 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6207 shares the 35×72×17 mm envelope but carries different catalogue ratings (22.1/15.3 kN vs 27/15.3 kN) — the stainless execution is not a load-rating equivalent. |
| 6207-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6207-2Z shares the 35×72×17 mm envelope but carries different catalogue ratings (22.1/15.3 kN vs 27/15.3 kN) — the stainless execution is not a load-rating equivalent. |
| 6207-2RS | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6207-2RSH shares the 35×72×17 mm envelope but carries different catalogue ratings (22.1/15.3 kN vs 27/15.3 kN) — the stainless execution is not a load-rating equivalent. |
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 W6207-ZZ model number is decoded
The W prefix denotes SKF stainless steel deep-groove bearings (X108CrMo17 / AISI 440C class rings). In the 6200-series, the last two digits encode the bore: 6207 carries code 07 = 35 mm (code × 5). Envelope 35×72×17 mm (1.378×2.835×0.669 in), C 22.1 kN, C0 15.3 kN, Pu 0.655 kN; limiting speed 11000 r/min and mass 277 g. SKF spells the double shield W 6207-2Z (suffix 2Z); the shields are non-contact, retain grease and block coarse debris but are not liquid-tight. Stainless is chosen for corrosion and washdown duty, not for extra load — the same-envelope chrome-steel bearing rates higher.
Typical equipment & failure modes
Common applications
- pharmaceutical and packaging machines
- washdown-duty equipment
- chemical and marine atmospheres
- medical and laboratory devices
Known failure patterns
- surface staining and pitting when even the stainless steel is left unlubricated in salty or acidic duty
- seal and grease failure before the rings corrode in sustained washdown service
- fine-particle abrasion when non-contact shields let dust through in a dirty environment
- grease aging inside the shielded cavity with no relubrication path
Selection pitfalls — read before you substitute
- W-prefix stainless rings (X108CrMo17 / AISI 440C class) resist moisture and weak chemicals but will still rust in chloride-rich or salt-spray duty without protection — W6207-ZZ is not marine-grade stainless.
- The stainless steel is martensitic and MAGNETIC; do not reject W6207-ZZ over magnetism — only austenitic grades are non-magnetic, and those are too soft for bearing raceways.
- Stainless bearings carry lower load ratings than chrome steel of the same envelope: W6207-ZZ is quoted at C 22.1 kN versus the 17 mm-wide 52100 version — do not swap on dimensions alone.
- Food, pharmaceutical and washdown positions need food-grade grease (e.g. NSF H1 registered) inside W6207-ZZ; standard fill is industrial grease unless specified otherwise.
- The fatigue load limit is 0.655 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- Fillet radii must clear the W6207-ZZ chamfer so the 17 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
Frequently asked questions
What are the dimensions of the stainless W6207-ZZ?
SKF W 6207-2Z measures 35×72×17 mm (1.378×2.835×0.669 in), about 277 g, C 22.1 kN.
What does the W in W 6207-2Z mean?
W is the SKF prefix for stainless steel deep-groove bearings (rings in X108CrMo17 / AISI 440C class); the rest of the designation follows the normal series and bore rules.
What grease is supplied in W6207-ZZ?
Sealed units are pre-greased for life; for food or pharmaceutical duty order (or re-grease before service) with an NSF H1 registered food-grade grease.
Are W stainless bearings waterproof?
No — the stainless rings resist moisture and weak chemicals far better than 52100 chrome steel, but salt spray, strong chlorides and unlubricated washdown duty can still corrode W6207-ZZ; add seals and food-grade grease for wet positions.
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.