63-22 bearing: complete specifications & equivalents
The 63-22 is a ISO 15 radial bearing sized 22 x 56 x 16 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 22 mm |
| Outer diameter D | 56 mm |
| Width B | 16 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 18.6 kN |
| Basic static load rating C0 | 9.3 kN |
| Fatigue load limit Pu | 0.39 kN |
| Reference speed (thermal) | 28000 rpm |
| Limiting speed (mechanical) | 18000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 180 g |
| Manufacturer designation | 63/22 |
| 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 | 0.866 in |
|---|---|
| Outer diameter D | 2.205 in |
| Width B | 0.63 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 17 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) | 10 of 40 |
| Bore above smallest 6300-series size | 20 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 63-22 model number is decoded
In the large-bore 6300-series, the bore is written directly after the slash as 22 mm (large thin-section bores use the slash spelling instead of the two-digit code). The envelope is 22×56×16 mm (0.866×2.205×0.63 in) with a 17.0 mm radial section height, C 18.6 kN, C0 9.3 kN and Pu 0.39 kN. The open 63/22 carries no shields or seals and relies on application lubrication and external sealing. Limiting speed 18000 r/min, catalogue mass 180 g.
Typical equipment & failure modes
Common applications
- electric motors
- centrifugal pumps
- small gearboxes
- 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
- Do not preload 63-22 to silence it: a deep-groove ball bearing is not angular-contact, and axial preload only raises temperature and shortens grease life.
- Assign interference to the rotating ring: on a conventional shaft-mounted 22 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.
- Open 63-22 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 63-22; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- At 22 mm bore, C3 clearance is the safe choice when interference fits plus temperature rise consume the CN clearance; a hot tight bearing with no residual clearance fails fast.
- Catalogue ratings for 63-22 (C 18.6 kN, C0 9.3 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.
Frequently asked questions
What are the dimensions of 63-22?
The SKF 63/22 measures 22 mm bore × 56 mm OD × 16 mm width (0.866 × 2.205 × 0.63 in), mass about 180 g. It is open, with no shields or seals.
Why is there a slash in the designation 63/22?
The slash writes a bore that falls outside the two-digit code table: 63/22 means 22 mm bore. The site slug 63-22 replaces the slash with a hyphen.
What is the speed rating of 63-22?
SKF lists a 28000 r/min thermal reference speed and a 18000 r/min mechanical limiting speed for 63/22; real limits also depend on lubrication and fits.
What is the difference between 63-22 and a same-bore 62-series bearing?
Section height differs: 63-22 has a 17 mm radial section and C 18.6 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.