OH-3156-H adapter sleeve: complete specifications & mounting data
The OH-3156-H is an adapter sleeve sized 280 x 350 x 195 mm (tapered bore x sleeve OD x width) for a plain 260 mm metric shaft with Tr 280x4 thread supplied with the HM 56 T lock nut at 23,000 g per ISO 2982-1. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 280 mm |
| Outer diameter D | 350 mm |
| Width B | 195 mm |
| Fits shaft diameter | 260 mm |
| Sleeve thread G | Tr 280x4 |
| Included lock nut | HM 56 T |
| Included locking device | MB 56 |
| Associated hydraulic nut | HMV 56E |
| Material | Carbon_Steel |
| Mass | 23000 g |
| Manufacturer designation | OH 3156 H |
| 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 & OH31-series range
| Bore d | 11.024 in |
|---|---|
| Outer diameter D | 13.78 in |
| Width B | 7.677 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 35 mm |
| Smallest bore in OH31-series | 220 mm |
| Largest outer diameter in OH31-series | 620 mm |
| Width range across OH31-series | 161–335 mm |
| Bore position in OH31-series (smallest first) | 4 of 14 |
| Bore above smallest OH31-series size | 60 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| OH | 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 OH-3156-H model number is decoded
mass 23,000 g is 82.1 g per mm of bore; the sleeve with its HM 56 T nut and MB 56 washer forms the complete 195 mm-wide mounting assembly the 20 mm difference between the 260 mm shaft and the 280 mm nominal seat diameter is bridged by taper contraction as the slit sleeve closes during drive-up, rather than by machining the shaft the Tr 280x4 thread spans about 48.8 nut turns across the 195 mm width; each indexed turn is a measurable drive-up step when setting the bearing clearance on the 280 mm seat the annular envelope between 280 mm bore and 350 mm OD is about 34,636 mm² in cross section, which sets the 23,000 g mass at steel density for the 195 mm-long slit bush the OD-to-bore ratio is 1.25: the 350 mm sleeve OD is only 35 mm of section beyond the 280 mm seat, leaving room for the bearing outer ring without enlarging the housing bore at 260 mm shaft diameter this sleeve sits in the extra-large band served by oil-injection execution: pressurised oil between the mating surfaces is the only practical way to mount and dismount at this size the OH prefix names the oil-injection execution: ducts and distribution grooves in the tapered surface let pressurised oil part sleeve, shaft and bearing during mounting and dismounting; the trailing H marks the full hydraulic design dimensionally this sleeve belongs to the oil-injection OH 31 range for 231..K spherical roller bearings; the 350 mm OD and 195 mm width follow the ISO 2982-1 boundary plan for that series the delivery includes the HM 56 T lock nut and the MB 56 locking clip, and the HMV 56E hydraulic nut is the associated drive-up tool typical applications include rolling mill and steel plant roll seats, pump shafts in water and process plants and textile machine roller shafts adapter sleeves earn their place wherever a tapered-bore bearing must sit at any axial position on a plain shaft — here a 280 mm bore bearing on a 260 mm shaft in textile machine roller shafts the sleeve lets the designer use a plain, unstepped shaft and still locate the bearing positively; only one shoulder is needed, opposite the HM 56 T nut ordering digest — OH 3156 H: 260 mm plain shaft to 280 mm tapered bore, sleeve 350 mm OD and 195 mm wide, thread Tr 280x4, supplied with HM 56 T nut with MB 56 clip, drive-up tool HMV 56E; listed mass is 23,000 g
Typical equipment & failure modes
Common applications
- woodworking saw and planer spindles
- rolling mill and steel plant roll seats
- marine winch and deck machinery shafts
- cement plant kiln and mill trunnion drives
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
- misaligning the slit with the load zone or belt-pull direction concentrates stress on the split; orient the slit away from the main load
- 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
- reusing a stretched locking washer tab invites fatigue failure; the bent tab snaps off and the nut backs off undetected
- interchanging nut families (KM vs KMFE, MB vs MS) across executions loses locking reliability even when the thread appears to fit
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
- 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
- neglecting the catalogue axial displacement value leaves the bearing either loose on the taper or preloaded hot in service
Frequently asked questions
What shaft size does the OH-3156-H adapter sleeve fit?
OH 3156 H is listed for a 260 mm plain shaft; its tapered bore accepts 280 mm K-suffix bearings, the sleeve measures 350 mm OD and 195 mm wide.
What does the OH 3156 H designation mean?
OH 3156 H: oil-injection (OH) sleeve with a trailing H for the hydraulic design in the OH31 dimension plan; the code resolves to a 280 mm tapered bore and a 260 mm shaft.
What is supplied with the OH-3156-H?
Supplied hardware is the HM 56 T lock nut and MB 56 locking clip. Drive-up is done with the HMV 56E hydraulic nut.
How much does the OH-3156-H adapter sleeve weigh?
It weighs 23,000 g; the figure is the sleeve-only catalogue mass, with the HM 56 T nut counted on the same product row but the hydraulic tool ordered separately.
How is the OH-3156-H mounted on the shaft?
Connect a high-pressure pump to the M 6 connection, pressurise the 195 mm taper interface, and use the HMV 56E to reach the catalogue drive-up before fitting the HM 56 T 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.