Spherical roller bearing · 223 series
22308 bearing
40 × 90 × 33 mm
The 22308 is a spherical roller bearing with a 40 mm bore, 90 mm outside diameter and 33 mm width. Medium spherical roller bearings for heavier loads.
- Bore d
- 40 mm 1.5748 in
- Outside diameter D
- 90 mm 3.5433 in
- Width B
- 33 mm 1.2992 in
- Dimension series
- 23
- Load directions
- Very high radial, axial both directions
Designation explained
What 22308 means
Standard bearing numbers encode the type, the dimension series and the bore. Anything after the base number — seals, clearance, cage — is a suffix.
| Part | Meaning |
|---|---|
2 | Spherical roller bearing |
23 | Dimension series 23 |
08 | 08 → 40 mm bore (08 × 5) |
Variants
Common 22308 variants
Suffixes change the bearing without changing its boundary dimensions. The exact letters differ between manufacturers — always order by the full designation from the maker you choose.
| Suffix | Example | Meaning |
|---|---|---|
E / CC / CA | 22308E | Internal design generation and cage type; letters differ between manufacturers |
K | 22308K | Tapered bore (1:12) for adapter or withdrawal sleeve mounting |
W33 | 22308-W33 | Annular groove and lubrication holes in the outer ring |
CN (no suffix) | 22308 | Normal internal clearance |
C3 | 22308-C3 | Internal clearance greater than normal — common for electric motors and heated shafts |
C4 | 22308-C4 | Internal clearance greater than C3 |
Same envelope
Same 40 × 90 × 33 mm, different type
These bearings have exactly the same bore, outside diameter and width but are a different type. They fit the same housing and shaft, but carry loads differently — same size is not the same function.
Same bore
Other 40 mm bore bearings
Every standard bearing in this reference with a 40 mm bore, from light to heavy sections.
| Designation | Type | D | B / H |
|---|---|---|---|
| 6008 | Deep groove ball bearing | 68 mm | 15 mm |
| 6208 | Deep groove ball bearing | 80 mm | 18 mm |
| 6308 | Deep groove ball bearing | 90 mm | 23 mm |
| 6408 | Deep groove ball bearing | 110 mm | 27 mm |
| 61808 | Deep groove ball bearing | 52 mm | 7 mm |
| 61908 | Deep groove ball bearing | 62 mm | 12 mm |
| 16008 | Deep groove ball bearing | 68 mm | 9 mm |
| 1208 | Self-aligning ball bearing | 80 mm | 18 mm |
| 1308 | Self-aligning ball bearing | 90 mm | 23 mm |
| 2208 | Self-aligning ball bearing | 80 mm | 23 mm |
| 7208 | Angular contact ball bearing | 80 mm | 18 mm |
| 7308 | Angular contact ball bearing | 90 mm | 23 mm |
| NU208 | Cylindrical roller bearing | 80 mm | 18 mm |
| NU308 | Cylindrical roller bearing | 90 mm | 23 mm |
| NU2208 | Cylindrical roller bearing | 80 mm | 23 mm |
| 22208 | Spherical roller bearing | 80 mm | 23 mm |
| 30208 | Tapered roller bearing | 80 mm | 19.75 mm |
| 30308 | Tapered roller bearing | 90 mm | 25.25 mm |
| 32008X | Tapered roller bearing | 68 mm | 19 mm |
| 32208 | Tapered roller bearing | 80 mm | 24.75 mm |
| 32308 | Tapered roller bearing | 90 mm | 35.25 mm |
| 51108 | Thrust ball bearing | 60 mm | 13 mm |
| 51208 | Thrust ball bearing | 68 mm | 19 mm |
| 51308 | Thrust ball bearing | 78 mm | 26 mm |
| UCP208 | Pillow block bearing unit | — | — |
Where to buy
Find 22308 at sellers
Search results on independent sellers. We are not affiliated with them, do not earn from these links and do not see their prices or stock. Results mix brands and variants — check the full designation before you order.
About these dimensions. Boundary dimensions follow ISO 15 (radial bearings — boundary dimensions, general plan), dimension series 23, and are the same for every manufacturer of a standard 22308. Chamfers, load ratings, speed limits and weight depend on the manufacturer and design and are not shown — use the maker's datasheet for engineering decisions. Last checked 9 October 2026. Spotted an error? Tell us.
Learn more
What size is a 22308 bearing?
A 22308 is a spherical roller bearing with a 40 mm bore, 90 mm outside diameter and 33 mm width (40 × 90 × 33 mm). These boundary dimensions follow the ISO dimension plan, so they are the same across manufacturers.
Can I replace 22308 with another bearing of the same size?
Other bearing types can share the same 40 × 90 × 33 mm envelope, but a different type has different load directions, speed limits and mounting needs. Same dimensions alone do not make two bearings interchangeable.
Where are the load ratings and speed limits?
They depend on the manufacturer and internal design, so we do not list a single value. Check the datasheet for the exact full designation you intend to use.
Need 22308 data for a whole catalog?
We can help with that.
Normalized specifications, variants and supplier listings for every bearing you sell, with the source behind each value.