H-3122-E adapter sleeve: complete specifications & mounting data
The H-3122-E is an adapter sleeve sized 110 x 145 x 81 mm (tapered bore x sleeve OD x width) for a plain 100 mm metric shaft with M 110x2 thread supplied with the KMFE 22 lock nut at 2,150 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 | 81 mm |
| Fits shaft diameter | 100 mm |
| Sleeve thread G | M 110x2 |
| Included lock nut | KMFE 22 |
| Associated hydraulic nut | HMV 22 E |
| Material | Carbon_Steel |
| Mass | 2150 g |
| Manufacturer designation | H 3122 E |
| 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 & H31-series range
| Bore d | 4.331 in |
|---|---|
| Outer diameter D | 5.709 in |
| Width B | 3.189 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 17.5 mm |
| Smallest bore in H31-series | 100 mm |
| Largest outer diameter in H31-series | 250 mm |
| Width range across H31-series | 76–150 mm |
| Bore position in H31-series (smallest first) | 2 of 11 |
| Bore above smallest H31-series size | 10 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-3122-E model number is decoded
the seat taper is 1:12, so each millimetre of axial drive-up removes about 1/12 mm of radial clearance; one turn of the KMFE 22 nut on the M 110x2 thread advances 2 mm and takes out roughly 0.167 mm of clearance 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 the M 110x2 thread spans about 40.5 nut turns across the 81 mm width; each indexed turn is a measurable drive-up step when setting the bearing clearance on the 110 mm seat the sleeve wall is 17.5 mm thick at the small end — 15.9% of the 110 mm bore — thin enough to contract evenly onto the 100 mm shaft while keeping the seat round under the clamping load a width-to-bore ratio of 0.74 gives a 81 mm tapered contact length; the longitudinal slit lets the sleeve close down radially, so the grip on the 100 mm shaft is purely frictional at 100 mm shaft the sleeve suits mid-size machinery — conveyor pulleys, industrial fans and gearbox output shafts carrying 110 mm bore bearings the E variant simplifies the parts list for the 100 mm shaft: one KMFE 22 nut replaces nut plus washer, which also removes the risk of a forgotten or wrongly seated MB washer dimensionally this sleeve belongs to the large-size H 31 range for 231..K spherical roller bearings; the 145 mm OD and 81 mm width follow the ISO 2982-1 boundary plan for that series hardware on this row: the KMFE 22 lock nut; SKF lists the HMV 22 E hydraulic nut for mounting and dismounting typical applications include paper machine roll and cylinder journals, gearbox input and output shafts and mining crusher and screen exciter shafts 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 mining crusher and screen exciter shafts the sleeve lets the designer use a plain, unstepped shaft and still locate the bearing positively; only one shoulder is needed, opposite the KMFE 22 nut full specification chain for H 3122 E reads 100 mm shaft / 110 mm seat / 145 mm OD / 81 mm width / M 110x2 / KMFE 22 self-locking nut, drive-up tool HMV 22 E / 2,150 g
Typical equipment & failure modes
Common applications
- marine winch and deck machinery shafts
- paper machine roll and cylinder journals
- cement plant kiln and mill trunnion drives
- food processing line drive shafts
Known failure patterns
- mounting without a fixed abutment lets the bearing walk axially; the sleeve needs a shaft shoulder opposite the lock nut
- interchanging nut families (KM vs KMFE, MB vs MS) across executions loses locking reliability even when the thread appears to fit
- the integral locking screw must be set to the catalogue torque; over-setting galls the M 110x2 thread and makes removal difficult
- a fretted or corroded shaft seat cannot be rescued by a new sleeve — the thin wall conforms to the damage and clamping force collapses
- misaligning the slit with the load zone or belt-pull direction concentrates stress on the split; orient the slit away from the main load
Selection pitfalls — read before you substitute
- mounting without a fixed abutment lets the bearing walk axially; the sleeve needs a shaft shoulder opposite the lock nut
- the integral locking screw must be set to the catalogue torque; over-setting galls the M 110x2 thread and makes removal difficult
- 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
Frequently asked questions
What shaft size does the H-3122-E adapter sleeve fit?
the fit is 100 mm shaft to 110 mm bearing bore via the 1:12 taper; H-3122-E has a 145 mm outside diameter and a 81 mm overall width.
What does the H 3122 E designation mean?
the letters give the execution and the digits give the bore: H 3122 E belongs to H31, fits 110 mm tapered-bore bearings, and the E marks the KMFE self-locking nut execution.
What is supplied with the H-3122-E?
You receive the sleeve plus KMFE 22 lock nut. One nut turn on the M 110x2 thread advances 2 mm along the 1:12 taper.
How much does the H-3122-E adapter sleeve weigh?
2,150 g for the 81 mm-long slit bush — the equivalent of 19.5 g per millimetre of the 110 mm bore.
How is the H-3122-E mounted on the shaft?
Mount dry and clean: drive the bearing up the 1:12 taper by turning KMFE 22 on the M 110x2 thread, using the HMV 22 E hydraulic nut for force, verify clearance with feeler gauges, then apply the nut-integrated lock.
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.