OH-3280-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-3280-H model number is decoded

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 the HM 3180 lock nut carries size index 3180, matching the bore-code family of the 400 mm seat; the nut engages the Tr 400x5 sleeve thread over its full width a width-to-bore ratio of 0.82 gives a 328 mm tapered contact length; the longitudinal slit lets the sleeve close down radially, so the grip on the 380 mm shaft is purely frictional mass 87,000 g is 217.5 g per mm of bore; the sleeve with its HM 3180 nut and MS 3184-80 clip forms the complete 328 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 with a 380 mm shaft this is one of the largest metric sleeves listed; the 87,000 g mass and Tr 400x5 trapezoidal thread reflect hardware intended for hydraulic tooling, not hand spanners the OH 3280 H number covers the oil-injection bush only; the HM 3180 lock nut, the MS 3184-80 clip and the HMV 80E complete the hydraulic mounting kit listed on the same catalogue row the OH32 designation block places it in the oil-injection OH 32 range for 232..K spherical roller bearings — every sleeve in the block uses the same bore-code logic, and here the 400 mm tapered bore matches the K-suffix bearing it is ordered for the HM 3180 lock nut and the MS 3184-80 locking clip ship in the kit; controlled drive-up uses the HMV 80E hydraulic nut rather than a spanner typical applications include mining crusher and screen exciter shafts, conveyor pulley and drum bearing seats and electric motor and generator 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 electric motor and generator 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 ordering digest — OH 3280 H: 380 mm plain shaft to 400 mm tapered bore, sleeve 520 mm OD and 328 mm wide, thread Tr 400x5, supplied with HM 3180 nut with MS 3184-80 clip, drive-up tool HMV 80E; listed mass is 87,000 g

Typical equipment & failure modes

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
• 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