OH-3284-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-3284-H model number is decoded

the sleeve wall is 60 mm thick at the small end — 14.3% of the 420 mm bore — thin enough to contract evenly onto the 400 mm shaft while keeping the seat round under the clamping load the Tr 420x5 thread spans about 70.4 nut turns across the 352 mm width; each indexed turn is a measurable drive-up step when setting the bearing clearance on the 420 mm seat the annular envelope between 420 mm bore and 540 mm OD is about 90,478 mm² in cross section, which sets the 96,000 g mass at steel density for the 352 mm-long slit bush a width-to-bore ratio of 0.84 gives a 352 mm tapered contact length; the longitudinal slit lets the sleeve close down radially, so the grip on the 400 mm shaft is purely frictional mass 96,000 g is 228.6 g per mm of bore; the sleeve with its HM 3184 nut and MS 3184-80 clip forms the complete 352 mm-wide mounting assembly with a 400 mm shaft this is one of the largest metric sleeves listed; the 96,000 g mass and Tr 420x5 trapezoidal thread reflect hardware intended for hydraulic tooling, not hand spanners OH 3284 H is the hydraulic-mounting sleeve for large seats: oil-injection grooves cut drive-up friction sharply, and the HM 3184 nut with MS 3184-80 clip locks the final position as part of the oil-injection OH 32 range for 232..K spherical roller bearings, this size keeps series-standard proportions: 352 mm width on a 420 mm bore, so the bearing lands at the catalogue axial position the HM 3184 lock nut and the MS 3184-80 locking clip ship in the kit; controlled drive-up uses the HMV 84E hydraulic nut rather than a spanner typical applications include woodworking saw and planer spindles, cement plant kiln and mill trunnion drives and marine winch and deck machinery shafts adapter sleeves earn their place wherever a tapered-bore bearing must sit at any axial position on a plain shaft — here a 420 mm bore bearing on a 400 mm shaft in marine winch and deck machinery 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 3184 nut kit identity for this seat: sleeve OH 3284 H for a 400 mm shaft, 420x540x352 mm taper, Tr 420x5 thread, HM 3184 nut with MS 3184-80 clip, drive-up tool HMV 84E, catalogue mass 96,000 g

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• neglecting the catalogue axial displacement value leaves the bearing either loose on the taper or preloaded hot in service
• 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