OH-3180-H adapter sleeve: complete specifications & mounting data
The OH-3180-H is an adapter sleeve sized 400 x 520 x 272 mm (tapered bore x sleeve OD x width) for a plain 380 mm metric shaft with Tr 400x5 thread supplied with the HM 3180 lock nut at 73,000 g per ISO 2982-1. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 400 mm |
| Outer diameter D | 520 mm |
| Width B | 272 mm |
| Fits shaft diameter | 380 mm |
| Sleeve thread G | Tr 400x5 |
| Included lock nut | HM 3180 |
| Included locking device | MS 3184-80 |
| Associated hydraulic nut | HMV 80E |
| Material | Carbon_Steel |
| Mass | 73000 g |
| Manufacturer designation | OH 3180 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 | 15.748 in |
|---|---|
| Outer diameter D | 20.472 in |
| Width B | 10.709 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 60 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) | 10 of 14 |
| Bore above smallest OH31-series size | 180 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-3180-H model number is decoded
a width-to-bore ratio of 0.68 gives a 272 mm tapered contact length; the longitudinal slit lets the sleeve close down radially, so the grip on the 380 mm shaft is purely frictional for controlled drive-up the catalogue pairs this seat with the HMV 80E hydraulic nut (size 80); at 73,000 g the sleeve and bearing together are too heavy to seat reliably with a hook spanner alone the sleeve wall is 60 mm thick at the small end — 15.0% of the 400 mm bore — thin enough to contract evenly onto the 380 mm shaft while keeping the seat round under the clamping load mass 73,000 g is 182.5 g per mm of bore; the sleeve with its HM 3180 nut and MS 3184-80 clip forms the complete 272 mm-wide mounting assembly the 20 mm difference between the 380 mm shaft and the 400 mm nominal seat diameter is bridged by taper contraction as the slit sleeve closes during drive-up, rather than by machining the shaft at 380 mm the 272 mm-wide seat and its HM 3180 nut are crane-handled components; injection pressure and drive-up distance are logged procedures rather than workshop judgement the OH design carries oil ducts and distribution grooves machined into the taper; with the oil film established the sleeve slides with almost no metallic contact, protecting both the 380 mm shaft and the 400 mm bearing bore the OH31 block is one of the ISO 2982-1 dimension plans; at this seat it means a 520 mm sleeve OD and the Tr 400x5 thread shared with the adjacent bore steps the catalogue row bundles the HM 3180 lock nut and the MS 3184-80 locking clip and references the HMV 80E hydraulic nut for the 400 mm seat typical applications include gearbox input and output shafts, textile machine roller shafts and agricultural machinery axle and PTO shafts adapter sleeves earn their place wherever a tapered-bore bearing must sit at any axial position on a plain shaft — here a 400 mm bore bearing on a 380 mm shaft in agricultural machinery axle and PTO 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 3180 nut full specification chain for OH 3180 H reads 380 mm shaft / 400 mm seat / 520 mm OD / 272 mm width / Tr 400x5 / HM 3180 nut with MS 3184-80 clip, drive-up tool HMV 80E / 73,000 g
Typical equipment & failure modes
Common applications
- industrial fan and blower impeller shafts
- gearbox input and output shafts
- pump shafts in water and process plants
- agricultural machinery axle and PTO shafts
Known failure patterns
- mounting with the HMV 80E hydraulic nut but without injecting oil first overloads the Tr 400x5 thread and can seize the nut
- 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
- the shaft must be within h9 tolerance and free of scoring; an oversize or rough shaft stops the slit sleeve closing down and leaves the grip to the thread alone
- over-driving the taper eliminates bearing internal clearance entirely; clearance reduction must be measured with feeler gauges, not estimated from nut torque
Selection pitfalls — read before you substitute
- mounting with the HMV 80E hydraulic nut but without injecting oil first overloads the Tr 400x5 thread and can seize the nut
- 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
Frequently asked questions
What shaft size does the OH-3180-H adapter sleeve fit?
the fit is 380 mm shaft to 400 mm bearing bore via the 1:12 taper; OH-3180-H has a 520 mm outside diameter and a 272 mm overall width.
What does the OH 3180 H designation mean?
the letters give the execution and the digits give the bore: OH 3180 H belongs to OH31, fits 400 mm tapered-bore bearings, with oil-injection ducts marked by OH/H.
What is supplied with the OH-3180-H?
You receive the sleeve plus HM 3180 lock nut and MS 3184-80 locking clip. One nut turn on the Tr 400x5 thread advances 5 mm along the 1:12 taper.
How much does the OH-3180-H adapter sleeve weigh?
73,000 g for the 272 mm-long slit bush — the equivalent of 182.5 g per millimetre of the 400 mm bore.
How is the OH-3180-H mounted on the shaft?
Oil injection plus the HMV 80E: the oil film parts the 400 mm seat while the nut provides controlled force; release pressure and secure the HM 3180/MS 3184-80 lock at the final position.
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.