H-320-E 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 H-320-E model number is decoded

this sleeve mounts a bearing with a 100 mm tapered bore onto a plain 90 mm shaft; the 130 mm outside diameter and 71 mm width define the tapered seat the bearing is driven onto the 10 mm difference between the 90 mm shaft and the 100 mm nominal seat diameter is bridged by taper contraction as the slit sleeve closes during drive-up, rather than by machining the shaft 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 KMFE 20 nut on the M 100x2 thread advances 2 mm and takes out roughly 0.167 mm of clearance the sleeve wall is 15 mm thick at the small end — 15.0% of the 100 mm bore — thin enough to contract evenly onto the 90 mm shaft while keeping the seat round under the clamping load a width-to-bore ratio of 0.71 gives a 71 mm tapered contact length; the longitudinal slit lets the sleeve close down radially, so the grip on the 90 mm shaft is purely frictional the 90 mm shaft diameter places this in the medium band, where adapter mounting starts to beat press fits because no heating or pressing equipment is needed on site the E suffix marks the variant supplied with the KMFE 20 nut, which carries an integral locking screw — no separate locking washer is needed, and the nut locks itself on the M 100x2 thread dimensionally this sleeve belongs to the medium-section H 3 range, the default seat for 13..K and 22..K self-aligning ball bearings and 222..K spherical roller bearings; the 130 mm OD and 71 mm width follow the ISO 2982-1 boundary plan for that series the delivery includes the KMFE 20 lock nut, and the HMV 20 E hydraulic nut is the associated drive-up tool typical applications include conveyor pulley and drum bearing seats, quarry conveyor head and tail drums and industrial fan and blower impeller shafts adapter sleeves earn their place wherever a tapered-bore bearing must sit at any axial position on a plain shaft — here a 100 mm bore bearing on a 90 mm shaft in industrial fan and blower impeller shafts the sleeve lets the designer use a plain, unstepped shaft and still locate the bearing positively; only one shoulder is needed, opposite the KMFE 20 nut kit identity for this seat: sleeve H 320 E for a 90 mm shaft, 100x130x71 mm taper, M 100x2 thread, KMFE 20 self-locking nut, drive-up tool HMV 20 E, catalogue mass 1,700 g

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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
• reusing a stretched locking washer tab invites fatigue failure; the bent tab snaps off and the nut backs off undetected