H-322 adapter sleeve: complete specifications & mounting data
The H-322 is an adapter sleeve sized 110 x 145 x 77 mm (tapered bore x sleeve OD x width) for a plain 100 mm metric shaft with M 110x2 thread supplied with the KM 22 lock nut at 2,050 g per ISO 2982-1. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 110 mm |
| Outer diameter D | 145 mm |
| Width B | 77 mm |
| Fits shaft diameter | 100 mm |
| Sleeve thread G | M 110x2 |
| Included lock nut | KM 22 |
| Included locking device | MB 22 |
| Associated hydraulic nut | HMV 22 E |
| Material | Carbon_Steel |
| Mass | 2050 g |
| Manufacturer designation | H 322 |
| Standard | ISO 2982-1 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 23.1 adapter sleeves for metric shafts |
| Last verified | 2026-09-30 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 23.1 adapter sleeves for metric shafts) · extracted 2026-09-30
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 23.1 adapter sleeves for metric shafts); 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 & H3-series range
| Bore d | 4.331 in |
|---|---|
| Outer diameter D | 5.709 in |
| Width B | 3.031 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 17.5 mm |
| Smallest bore in H3-series | 20 mm |
| Largest outer diameter in H3-series | 145 mm |
| Width range across H3-series | 28–77 mm |
| Bore position in H3-series (smallest first) | 18 of 18 |
| Bore above smallest H3-series size | 90 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| H | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; standard interchange — confirm clearance class and precision with the supplier. |
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 H-322 model number is decoded
the OD-to-bore ratio is 1.32: the 145 mm sleeve OD is only 17.5 mm of section beyond the 110 mm seat, leaving room for the bearing outer ring without enlarging the housing bore the 10 mm difference between the 100 mm shaft and the 110 mm nominal seat diameter is bridged by taper contraction as the slit sleeve closes during drive-up, rather than by machining the shaft mounting and dismounting stay purely mechanical: the KM 22 nut drives the taper home, and backing the nut off releases the 110 mm seat without oil-injection tooling the KM 22 lock nut carries size index 22, matching the bore-code family of the 110 mm seat; the nut engages the M 110x2 sleeve thread over its full width for controlled drive-up the catalogue pairs this seat with the HMV 22 E hydraulic nut (size 22); at 2,050 g the sleeve and bearing together are too heavy to seat reliably with a hook spanner alone the 100 mm shaft diameter places this in the medium band, where adapter mounting starts to beat press fits because no heating or pressing equipment is needed on site with the H execution the KM 22 lock nut and MB 22 washer are delivered together — the washer is a single-use element that should be renewed whenever the 110 mm seat is remounted within the medium-section H 3 range, the default seat for 13..K and 22..K self-aligning ball bearings and 222..K spherical roller bearings this is the 100 mm shaft step; neighbouring steps keep the same hardware concept while the taper seat grows to 110x145 mm here the delivery includes the KM 22 lock nut and the MB 22 locking washer, and the HMV 22 E hydraulic nut is the associated drive-up tool typical applications include agricultural machinery axle and PTO shafts, quarry conveyor head and tail drums and paper machine roll and cylinder journals adapter sleeves earn their place wherever a tapered-bore bearing must sit at any axial position on a plain shaft — here a 110 mm bore bearing on a 100 mm shaft in paper machine roll and cylinder journals the sleeve lets the designer use a plain, unstepped shaft and still locate the bearing positively; only one shoulder is needed, opposite the KM 22 nut full specification chain for H 322 reads 100 mm shaft / 110 mm seat / 145 mm OD / 77 mm width / M 110x2 / KM 22 nut with MB 22 washer, drive-up tool HMV 22 E / 2,050 g
Typical equipment & failure modes
Common applications
- mining crusher and screen exciter shafts
- agricultural machinery axle and PTO shafts
- electric motor and generator shafts
- rolling mill and steel plant roll seats
Known failure patterns
- a fretted or corroded shaft seat cannot be rescued by a new sleeve — the thin wall conforms to the damage and clamping force collapses
- greasing the tapered seat or shaft destroys the dry friction the joint relies on; a lubricated taper can let the whole sleeve spin under load
- driving the bearing via the outer ring during mounting loads the rolling elements; force is always applied through the lock nut on the inner ring
- misaligning the slit with the load zone or belt-pull direction concentrates stress on the split; orient the slit away from the main load
- reusing a stretched locking washer tab invites fatigue failure; the bent tab snaps off and the nut backs off undetected
Selection pitfalls — read before you substitute
- a fretted or corroded shaft seat cannot be rescued by a new sleeve — the thin wall conforms to the damage and clamping force collapses
- driving the bearing via the outer ring during mounting loads the rolling elements; force is always applied through the lock nut on the inner ring
- reusing a stretched locking washer tab invites fatigue failure; the bent tab snaps off and the nut backs off undetected
Frequently asked questions
What shaft size does the H-322 adapter sleeve fit?
the fit is 100 mm shaft to 110 mm bearing bore via the 1:12 taper; H-322 has a 145 mm outside diameter and a 77 mm overall width.
What does the H 322 designation mean?
the letters give the execution and the digits give the bore: H 322 belongs to H3, fits 110 mm tapered-bore bearings, using a separate lock nut and locking element.
What is supplied with the H-322?
You receive the sleeve plus KM 22 lock nut and MB 22 locking washer. One nut turn on the M 110x2 thread advances 2 mm along the 1:12 taper.
How much does the H-322 adapter sleeve weigh?
2,050 g for the 77 mm-long slit bush — the equivalent of 18.6 g per millimetre of the 110 mm bore.
How is the H-322 mounted on the shaft?
Mount dry and clean: drive the bearing up the 1:12 taper by turning KM 22 on the M 110x2 thread, using the HMV 22 E hydraulic nut for force, verify clearance with feeler gauges, then apply the MB 22 locking washer.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 23.1 adapter sleeves for metric shafts on 2026-09-30. Read our editorial & correction policy.