OH-3048-H adapter sleeve: complete specifications & mounting data
The OH-3048-H is an adapter sleeve sized 240 x 290 x 133 mm (tapered bore x sleeve OD x width) for a plain 220 mm metric shaft with Tr 240x4 thread supplied with the HM 3048 lock nut at 12,000 g per ISO 2982-1. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 240 mm |
| Outer diameter D | 290 mm |
| Width B | 133 mm |
| Fits shaft diameter | 220 mm |
| Sleeve thread G | Tr 240x4 |
| Included lock nut | HM 3048 |
| Included locking device | MS 3052-48 |
| Associated hydraulic nut | HMV 48E |
| Material | Carbon_Steel |
| Mass | 12000 g |
| Manufacturer designation | OH 3048 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 & OH30-series range
| Bore d | 9.449 in |
|---|---|
| Outer diameter D | 11.417 in |
| Width B | 5.236 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 25 mm |
| Smallest bore in OH30-series | 220 mm |
| Largest outer diameter in OH30-series | 630 mm |
| Width range across OH30-series | 126–265 mm |
| Bore position in OH30-series (smallest first) | 2 of 15 |
| Bore above smallest OH30-series size | 20 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-3048-H model number is decoded
the OD-to-bore ratio is 1.21: the 290 mm sleeve OD is only 25 mm of section beyond the 240 mm seat, leaving room for the bearing outer ring without enlarging the housing bore this sleeve mounts a bearing with a 240 mm tapered bore onto a plain 220 mm shaft; the 290 mm outside diameter and 133 mm width define the tapered seat the bearing is driven onto 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 HM 3048 nut on the Tr 240x4 thread advances 4 mm and takes out roughly 0.333 mm of clearance oil reaches the interface through the M 6 duct connection into distribution grooves, so the 12,000 g sleeve can be floated off the 220 mm shaft instead of being pressed or pulled the HM 3048 lock nut carries size index 3048, matching the bore-code family of the 240 mm seat; the nut engages the Tr 240x4 sleeve thread over its full width at 220 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 30 range for 230..K spherical roller bearings; the 290 mm OD and 133 mm width follow the ISO 2982-1 boundary plan for that series the delivery includes the HM 3048 lock nut and the MS 3052-48 locking clip, and the HMV 48E hydraulic nut is the associated drive-up tool typical applications include rolling mill and steel plant roll seats, quarry conveyor head and tail drums 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 240 mm bore bearing on a 220 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 3048 nut kit identity for this seat: sleeve OH 3048 H for a 220 mm shaft, 240x290x133 mm taper, Tr 240x4 thread, HM 3048 nut with MS 3052-48 clip, drive-up tool HMV 48E, catalogue mass 12,000 g
Typical equipment & failure modes
Common applications
- mining crusher and screen exciter shafts
- rolling mill and steel plant roll seats
- electric motor and generator shafts
- textile machine roller shafts
Known failure patterns
- reusing a stretched locking washer tab invites fatigue failure; the bent tab snaps off and the nut backs off undetected
- 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
- a fretted or corroded shaft seat cannot be rescued by a new sleeve — the thin wall conforms to the damage and clamping force collapses
- interchanging nut families (KM vs KMFE, MB vs MS) across executions loses locking reliability even when the thread appears to fit
- neglecting the catalogue axial displacement value leaves the bearing either loose on the taper or preloaded hot in service
Selection pitfalls — read before you substitute
- reusing a stretched locking washer tab invites fatigue failure; the bent tab snaps off and the nut backs off undetected
- a fretted or corroded shaft seat cannot be rescued by a new sleeve — the thin wall conforms to the damage and clamping force collapses
- exceeding the maximum injection pressure for the 240 mm seat can permanently expand the thin sleeve wall
Frequently asked questions
What shaft size does the OH-3048-H adapter sleeve fit?
OH-3048-H (OH 3048 H) mounts on a plain metric shaft of 220 mm and carries a bearing with a 240 mm tapered (K) bore; sleeve OD is 290 mm and width 133 mm.
What does the OH 3048 H designation mean?
OH identifies an oil-injection sleeve with ducts for hydraulic mounting in the OH30 series; the size code encodes the 240 mm tapered bore (bore code × 5 mm). The trailing H marks the hydraulic execution.
What is supplied with the OH-3048-H?
The kit contains the HM 3048 lock nut and MS 3052-48 locking clip. The HMV 48E hydraulic nut is the associated mounting tool.
How much does the OH-3048-H adapter sleeve weigh?
The listed mass is 12,000 g for the sleeve assembly at 240x290x133 mm — about 90.2 g per millimetre of sleeve width.
How is the OH-3048-H mounted on the shaft?
Inject mounting oil through the M 6 duct, drive the sleeve with the HMV 48E hydraulic nut, measure the axial displacement for the 240 mm seat, then lock with the HM 3048 nut and MS 3052-48 clip.
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.