22309 bearing: complete specifications & equivalents
The 22309 is a ISO 15 radial bearing sized 45 x 100 x 36 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 45 mm |
| Outer diameter D | 100 mm |
| Width B | 36 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 190 kN |
| Basic static load rating C0 | 183 kN |
| Fatigue load limit Pu | 19.6 kN |
| Reference speed (thermal) | 5300 rpm |
| Limiting speed (mechanical) | 7000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1400 g |
| Manufacturer designation | SKF 22309 E |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings |
| Last verified | 2026-09-26 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings) · extracted 2026-09-26
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings); 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 & 22300-series range
| Bore d | 1.772 in |
|---|---|
| Outer diameter D | 3.937 in |
| Width B | 1.417 in |
| ISO bore code | 09 |
| Radial section height (D−d)/2 | 27.5 mm |
| Smallest bore in 22300-series | 40 mm |
| Largest outer diameter in 22300-series | 620 mm |
| Width range across 22300-series | 33–185 mm |
| Bore position in 22300-series (smallest first) | 2 of 28 |
| Bore above smallest 22300-series size | 5 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 22309-EK | SKF | full Dimensions and internal design equivalent — standard interchange. | Tapered-bore (1:12) execution on H2309 adapter sleeve; same ISO 15 envelope, separate order number. |
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 22309 model number is decoded
Ordering number 22309 E in SKF catalogue PUB BU/P1 17000 denotes a double-row spherical roller bearing for a 45 mm shaft, dimension series 23 (heavy OD, wide), with open execution and a stamped window-type steel cage. Digit by digit, 22309 reads as bearing type 2 (spherical roller, two barrel-roller rows), dimension series 23, and bore reference 09 resolving to 45 mm; 100 mm OD and 36 mm width are the matching ISO 15 boundary values. The trailing E is the SKF optimized internal design: larger rollers and a stamped window-type steel cage give higher load ratings than the older CC geometry; EK is the same bearing with a 1:12 tapered bore for adapter sleeves. Catalogue mass 1400 g for the 45×100×36 mm open execution covers the a stamped window-type steel cage; tapered-bore and sealed variants differ in mass and carry their own order numbers. A 45 mm rotating inner ring usually runs k5 on the shaft with H7 in the housing; for vibrating-screen duty the outer ring is instead held tight and the shaft seat loosened — follow the screen builder's fit schedule.
Typical equipment & failure modes
Common applications
- hammer-mill and crusher rotors
- continuous-caster guide rolls
- extruder gearbox shafts
- vibrating screen and scalper main shafts
Known failure patterns
- raceway fatigue spalling of the sphered outer raceway after extended service above the catalogue L10 rating
- inner-ring raceway spalling from edge loading when misalignment exceeds the self-aligning recovery range
- cage pocket wear or fracture from roller skew at insufficient minimum load or rapid acceleration
- surface distress and smearing when the relubrication interval is exceeded — the W33 groove is only effective if grease actually reaches the roller rows
- false brinelling on standby machines exposed to external vibration
Selection pitfalls — read before you substitute
- On this 45 mm bore, an interference inner-ring fit consumes a large share of the CN clearance; specify C3 when the inner ring rotates hot, and verify residual clearance after mounting rather than trusting the catalogue clearance class.
- The 22300-series series at 45 mm bore (100×36 mm) is the heavy wide-section choice — highest capacity, lowest speed limit; do not substitute a 222 or 230 series in the same bore without re-checking both life and the 7,000 r/min ceiling.
- Catalogue reference speed and limiting speed are different limits: the 5,300 r/min reference is a thermal criterion under load, while the 7,000 r/min limiting value is the mechanical ceiling — observe both.
- Catalogue reference speed and limiting speed are different limits: the 5,300 r/min reference is a thermal criterion under load, while the 7,000 r/min limiting value is the mechanical ceiling — observe both.
- The 190/183 kN ratings are SKF catalogue values for this exact execution (22309 E); SKF can revise internal geometry without changing the order number, so keep the catalogue version (SKF catalogue PUB BU/P1 17000) with the specification and re-verify for critical drives.
- SKF lists several executions of 22309 (cylindrical bore as listed, tapered-bore 22309 EK variant, plus sealed and vibrating-screen options in the same envelope); they are not interchangeable order numbers — quote the full 22309 E designation when purchasing.
Frequently asked questions
What are the dimensions and catalogue data of 22309?
The 22309 E is a double-row spherical roller bearing with 45 mm bore, 100 mm outer diameter and 36 mm width (1.772 × 3.937 × 1.417 in) per ISO 15. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 190 kN, C0 183 kN, fatigue load limit Pu 19.6 kN, reference speed 5,300 r/min, limiting speed 7,000 r/min, mass about 1400 g. It is an open, self-aligning bearing with a stamped window-type steel cage.
How does the 22309 bore code work?
The last two digits of 22309 are bore code 09, so 09 × 5 = 45 mm bore. The 100 mm OD and 36 mm width come from the ISO 15 dimension-series plan (dimension series 23 (heavy OD, wide)), shared with other spherical roller bearings of the same code.
What does the E suffix mean on 22309?
E is the SKF optimized internal design with larger rollers and a stamped window-type steel cage for higher load ratings. The EK variant is the same bearing with a 1:12 tapered bore for adapter sleeves.
Can 22309 accommodate misalignment and axial load?
Yes on both counts. The sphered outer raceway lets the bearing self-align ≈ 0.5–2.5° depending on series, absorbing shaft deflection and housing-seat errors. The two barrel-roller rows also carry bidirectional axial load in addition to heavy radial load — this is the key difference from cylindrical roller bearings, which take no axial load.
When should the tapered-bore 22309K variant be used instead?
Choose the K (1:12 tapered bore) variant when the bearing must seat on an adapter or withdrawal sleeve — typical for long shafts, frequent dismounting, or stepped shafts where machining a precision journal is impractical. Sleeve mounting requires measuring clearance reduction or axial drive-up, not nut torque. The cylindrical-bore 22309 listed here seats directly on a machined journal.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings on 2026-09-26. Read our editorial & correction policy.