627-RSR bearing: complete specifications & equivalents
The 627-RSR is a ISO 15 radial bearing sized 7 x 22 x 7 mm (bore x OD x width) with RSR sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 7 mm |
| Outer diameter D | 22 mm |
| Width B | 7 mm |
| Material | GCr15 |
| Seal / shield | RSR |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 3.45 kN |
| Basic static load rating C0 | 1.37 kN |
| Fatigue load limit Pu | 0.057 kN |
| Reference speed (thermal) | 70000 rpm |
| Limiting speed (mechanical) | 36000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 13 g |
| Manufacturer designation | 627-2RSL |
| 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 | 0.276 in |
|---|---|
| Outer diameter D | 0.866 in |
| Width B | 0.276 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 7.5 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) | 5 of 45 |
| Bore above smallest 6200-series size | 4 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 627 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 7×22×7 mm envelope and equivalent catalogue ratings; 627 is the open arrangement execution of this size — boundary dimensions interchangeable, only the seal/shield/cage execution differs. |
| 627-2RS | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 7×22×7 mm envelope and equivalent catalogue ratings; 627-2RSH is the two contact elastomer seals execution of this size — boundary dimensions interchangeable, only the seal/shield/cage execution differs. |
| 627-ZZ | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 7×22×7 mm envelope and equivalent catalogue ratings; 627-2Z is the two non-contact shields execution of this size — boundary dimensions interchangeable, only the seal/shield/cage execution differs. |
| W627-2RS | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 7×22×7 mm envelope, but the stainless and chrome-steel executions carry different catalogue ratings (3.45/1.37 kN vs 1.99/0.78 kN) — envelope match, not a load-rating equivalent; choose by corrosion versus load duty. |
| W627-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 7×22×7 mm envelope, but the stainless and chrome-steel executions carry different catalogue ratings (3.45/1.37 kN vs 1.99/0.78 kN) — envelope match, not a load-rating equivalent; choose by corrosion versus load duty. |
| W627 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 7×22×7 mm envelope, but the stainless and chrome-steel executions carry different catalogue ratings (3.45/1.37 kN vs 1.99/0.78 kN) — envelope match, not a load-rating equivalent; choose by corrosion versus load duty. |
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 627-RSR model number is decoded
In the 6200-series, the final digit is the bore in millimetres: 627 fits a 7 mm shaft (direct-number miniature spelling). The envelope is 7×22×7 mm (0.276×0.866×0.276 in) with a 7.5 mm radial section height, C 3.45 kN, C0 1.37 kN and Pu 0.057 kN. SKF lists this as 627-2RSL with a low-friction non-contact seal (2RSL/2RZ spelling): it runs near open-bearing speed with less drag than a contact seal but is not liquid-tight. Limiting speed 36000 r/min, catalogue mass 13 g.
Typical equipment & failure modes
Common applications
- small fans and blowers
- hand-held power tools
- domestic appliances
- instrument and encoder drives
Known failure patterns
- fine dust or moisture passing the low-friction non-contact lip in dirty or wet duty
- grease loss past the low-drag seal when no regreasing schedule is kept
- brinelling from static overload or hammer blows during mounting
- false brinelling from vibration while the shaft stands idle
Selection pitfalls — read before you substitute
- Fillet radii must clear the 627-RSR chamfer so the 7 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
- The fatigue load limit is 0.057 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- The low-friction seal on 627-RSR saves drag versus a contact lip but is not liquid-tight; wet or chemically aggressive positions need the 2RS version.
- Do not pry the caps off 627-RSR to repack it; shield/seal damage leaves a gap that throws grease and admits dirt.
- Do not preload 627-RSR to silence it: a deep-groove ball bearing is not angular-contact, and axial preload only raises temperature and shortens grease life.
- Clearance suffixes follow the seal code in the designation stack (e.g. 627-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
Frequently asked questions
What are the dimensions of 627-RSR?
The SKF 627-2RSL measures 7 mm bore × 22 mm OD × 7 mm width (0.276 × 0.866 × 0.276 in), mass about 13 g. It has two low-friction non-contact rubber seals.
How do I read the 627 designation?
Small miniature bearings print the bore as the final digit, so 627 is a 7 mm bearing; the series digits in front give the section (OD/width family).
What is the difference between 627-RSR and a same-bore 62-series bearing?
Section height differs: 627-RSR has a 7.5 mm radial section and C 3.45 kN; always match d, D and B — same bore alone never makes two bearings interchangeable.
Which fits should I use for 627-RSR?
With a rotating inner ring use roughly j5/k5 on the shaft and H7 in the 22 mm housing; reverse the interference if the outer ring rotates.
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.