1322-KM bearing: complete specifications & equivalents
The 1322-KM is a ISO 15 radial bearing sized 110 x 240 x 50 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 110 mm |
| Outer diameter D | 240 mm |
| Width B | 50 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 163 kN |
| Basic static load rating C0 | 72 kN |
| Fatigue load limit Pu | 2.75 kN |
| Reference speed (thermal) | 5300 rpm |
| Limiting speed (mechanical) | 3600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 12000 g |
| Manufacturer designation | 1322 KM |
| 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 & 1300-series range
| Bore d | 4.331 in |
|---|---|
| Outer diameter D | 9.449 in |
| Width B | 1.969 in |
| ISO bore code | 22 |
| Radial section height (D−d)/2 | 65 mm |
| Smallest bore in 1300-series | 5 mm |
| Largest outer diameter in 1300-series | 320 mm |
| Width range across 1300-series | 6–74 mm |
| Bore position in 1300-series (smallest first) | 24 of 29 |
| Bore above smallest 1300-series size | 105 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 1322 | NTN | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
| 1322-M | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 110×240×50 mm envelope with catalogue ratings within 10 %; 1322 M is the machined brass cage, open arrangement execution of this size — boundary dimensions interchangeable, only the seal/cage/bore execution differs. |
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 1322-KM model number is decoded
The 13xx series is the medium/normal-section self-aligning ball bearing (ISO dimension series 03). the last two digits encode the bore: 1322 carries code 22 = 110 mm (code × 5). Envelope 110×240×50 mm (4.331×9.449×1.969 in) with a 65.0 mm radial section height, C 163 kN, C0 72 kN and Pu 2.75 kN. The open 1322 KM carries no shields or seals and relies on application lubrication and external sealing. The KM suffix identifies the machined brass cage execution. The K suffix marks a 1:12 tapered bore for direct mounting on a tapered shaft or with an adapter sleeve. Reference (thermal) speed 5300 r/min, limiting speed 3600 r/min, catalogue mass 12000 g.
Typical equipment & failure modes
Common applications
- conveyor drum and pulley shafts
- agricultural gearboxes
- textile machinery drives
- industrial fans and blowers
Known failure patterns
- contamination wear when the open arrangement is used without adequate external sealing
- lubricant starvation where no regreasing interval is maintained
- adapter-sleeve fretting when the sleeve is not locked against the shaft shoulder
- incorrect sleeve tightening that leaves the tapered bore loose or over-expanded, changing internal clearance
- raceway smearing under marginal lubrication at start-up
- electrical pitting in VFD-driven motors without shaft grounding
Selection pitfalls — read before you substitute
- Catalogue ratings for 1322-KM (C 163 kN, C0 72 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.
- The fatigue load limit is 2.75 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- Tighten the adapter sleeve to the SKF-recommended starting clearance, not to feel — an over-tightened sleeve expands the inner ring and removes all internal clearance.
- The KM suffix on 1322-KM denotes a machined brass cage: the choice for high speeds, marginal lubrication and shock/vibration duty, and temperature-tolerant where polymer cages are not.
- Self-aligning ball bearings tolerate up to roughly 2–3° of static misalignment, but the sealed 1322-KM (2RS1) allows less — the lip seal binds before the spherical raceway does.
- Assign interference to the rotating ring: on a 110 mm rotating shaft use a m6 seat with an H7 housing; reverse the logic if the outer ring rotates.
Frequently asked questions
What are the dimensions of 1322-KM?
SKF 1322 KM measures 110 mm bore × 240 mm OD × 50 mm width (4.331 × 9.449 × 1.969 in), mass about 12000 g. It is open, with no shields or seals.
How does the bore code in 1322 work?
The final two digits of 1322 are bore code 22, multiplied by 5 to give 110 mm.
Can 1322-KM take axial load?
A self-aligning ball bearing can carry some axial load in addition to radial load, but its axial capacity is lower than an angular-contact bearing of the same envelope. Use it where misalignment, not thrust, is the main requirement.
Which fits should I use for 1322-KM?
With a rotating inner ring use roughly m6 on the shaft and H7 in the 240 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.