OH-3044-H adapter sleeve: complete specifications & mounting data
The OH-3044-H is an adapter sleeve sized 220 x 260 x 126 mm (tapered bore x sleeve OD x width) for a plain 200 mm metric shaft with Tr 220x4 thread supplied with the HM 3044 lock nut at 9,900 g per ISO 2982-1. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 220 mm |
| Outer diameter D | 260 mm |
| Width B | 126 mm |
| Fits shaft diameter | 200 mm |
| Sleeve thread G | Tr 220x4 |
| Included lock nut | HM 3044 |
| Included locking device | MS 3044 |
| Associated hydraulic nut | HMV 44E |
| Material | Carbon_Steel |
| Mass | 9900 g |
| Manufacturer designation | OH 3044 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 | 8.661 in |
|---|---|
| Outer diameter D | 10.236 in |
| Width B | 4.961 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 20 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) | 1 of 15 |
| Bore above smallest OH30-series size | 0 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-3044-H model number is decoded
the OD-to-bore ratio is 1.18: the 260 mm sleeve OD is only 20 mm of section beyond the 220 mm seat, leaving room for the bearing outer ring without enlarging the housing bore this sleeve mounts a bearing with a 220 mm tapered bore onto a plain 200 mm shaft; the 260 mm outside diameter and 126 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 3044 nut on the Tr 220x4 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 9,900 g sleeve can be floated off the 200 mm shaft instead of being pressed or pulled the HM 3044 lock nut carries size index 3044, matching the bore-code family of the 220 mm seat; the nut engages the Tr 220x4 sleeve thread over its full width the 200 mm shaft diameter puts this at the heavy end of the metric range, where the catalogue recommends the HMV 44E hydraulic nut to reach drive-up without damaging the thread with OH 3044 H mounting is a hydraulic operation: connect the pump to the M 6 duct, inject oil between the mating surfaces, drive home with the HMV 44E nut, then lock with HM 3044 within the oil-injection OH 30 range for 230..K spherical roller bearings this is the 200 mm shaft step; neighbouring steps keep the same hardware concept while the taper seat grows to 220x260 mm here the delivery includes the HM 3044 lock nut and the MS 3044 locking clip, and the HMV 44E hydraulic nut is the associated drive-up tool typical applications include cement plant kiln and mill trunnion drives, woodworking saw and planer spindles and food processing line drive shafts adapter sleeves earn their place wherever a tapered-bore bearing must sit at any axial position on a plain shaft — here a 220 mm bore bearing on a 200 mm shaft in food processing line drive 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 3044 nut kit identity for this seat: sleeve OH 3044 H for a 200 mm shaft, 220x260x126 mm taper, Tr 220x4 thread, HM 3044 nut with MS 3044 clip, drive-up tool HMV 44E, catalogue mass 9,900 g
Typical equipment & failure modes
Common applications
- pump shafts in water and process plants
- cement plant kiln and mill trunnion drives
- gearbox input and output shafts
- agricultural machinery axle and PTO shafts
Known failure patterns
- reusing a stretched locking washer tab invites fatigue failure; the bent tab snaps off and the nut backs off undetected
- mounting without a fixed abutment lets the bearing walk axially; the sleeve needs a shaft shoulder opposite the lock nut
- exceeding the maximum injection pressure for the 220 mm seat can permanently expand the thin sleeve wall
- 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
- exceeding the maximum injection pressure for the 220 mm seat can permanently expand the thin sleeve wall
- 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-3044-H adapter sleeve fit?
OH-3044-H (OH 3044 H) mounts on a plain metric shaft of 200 mm and carries a bearing with a 220 mm tapered (K) bore; sleeve OD is 260 mm and width 126 mm.
What does the OH 3044 H designation mean?
OH identifies an oil-injection sleeve with ducts for hydraulic mounting in the OH30 series; the size code encodes the 220 mm tapered bore (bore code × 5 mm). The trailing H marks the hydraulic execution.
What is supplied with the OH-3044-H?
The kit contains the HM 3044 lock nut and MS 3044 locking clip. The HMV 44E hydraulic nut is the associated mounting tool.
How much does the OH-3044-H adapter sleeve weigh?
The listed mass is 9,900 g for the sleeve assembly at 220x260x126 mm — about 78.6 g per millimetre of sleeve width.
How is the OH-3044-H mounted on the shaft?
Inject mounting oil through the M 6 duct, drive the sleeve with the HMV 44E hydraulic nut, measure the axial displacement for the 220 mm seat, then lock with the HM 3044 nut and MS 3044 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.