OH-3148-H adapter sleeve: complete specifications & mounting data

Specification table

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.

Cross references & equivalents

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-3148-H model number is decoded

the annular envelope between 240 mm bore and 300 mm OD is about 25,447 mm² in cross section, which sets the 16,500 g mass at steel density for the 172 mm-long slit bush a width-to-bore ratio of 0.72 gives a 172 mm tapered contact length; the longitudinal slit lets the sleeve close down radially, so the grip on the 220 mm shaft is purely frictional the sleeve wall is 30 mm thick at the small end — 12.5% of the 240 mm bore — thin enough to contract evenly onto the 220 mm shaft while keeping the seat round under the clamping load the OD-to-bore ratio is 1.25: the 300 mm sleeve OD is only 30 mm of section beyond the 240 mm seat, leaving room for the bearing outer ring without enlarging the housing bore oil reaches the interface through the M 6 duct connection into distribution grooves, so the 16,500 g sleeve can be floated off the 220 mm shaft instead of being pressed or pulled at 220 mm the 172 mm-wide seat and its HM 48 T nut are crane-handled components; injection pressure and drive-up distance are logged procedures rather than workshop judgement oil injection is mandatory rather than optional at the 220 mm shaft scale — the OH grooves and M 6 connection are what make the 172 mm taper removable without destroying the seat as part of the oil-injection OH 31 range for 231..K spherical roller bearings, this size keeps series-standard proportions: 172 mm width on a 240 mm bore, so the bearing lands at the catalogue axial position the catalogue row bundles the HM 48 T lock nut and the MB 48 locking clip and references the HMV 48E hydraulic nut for the 240 mm seat typical applications include electric motor and generator shafts, food processing line drive shafts and rolling mill and steel plant roll seats 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 rolling mill and steel plant roll seats the sleeve lets the designer use a plain, unstepped shaft and still locate the bearing positively; only one shoulder is needed, opposite the HM 48 T nut kit identity for this seat: sleeve OH 3148 H for a 220 mm shaft, 240x300x172 mm taper, Tr 240x4 thread, HM 48 T nut with MB 48 clip, drive-up tool HMV 48E, catalogue mass 16,500 g

Typical equipment & failure modes

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
• misaligning the slit with the load zone or belt-pull direction concentrates stress on the split; orient the slit away from the main load
• over-driving the taper eliminates bearing internal clearance entirely; clearance reduction must be measured with feeler gauges, not estimated from nut torque