H-310 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-310 model number is decoded

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 KM 10 nut on the M 50x1,5 thread advances 1.5 mm and takes out roughly 0.125 mm of clearance mounting and dismounting stay purely mechanical: the KM 10 nut drives the taper home, and backing the nut off releases the 50 mm seat without oil-injection tooling the OD-to-bore ratio is 1.40: the 70 mm sleeve OD is only 10 mm of section beyond the 50 mm seat, leaving room for the bearing outer ring without enlarging the housing bore the sleeve wall is 10 mm thick at the small end — 20.0% of the 50 mm bore — thin enough to contract evenly onto the 45 mm shaft while keeping the seat round under the clamping load a width-to-bore ratio of 0.84 gives a 42 mm tapered contact length; the longitudinal slit lets the sleeve close down radially, so the grip on the 45 mm shaft is purely frictional at 45 mm shaft this is a mainstream workshop size; the M 50x1,5 nut can still be driven with a hook spanner alone, without hydraulic assistance reading H 310: H marks the standard sleeve execution, the size code encodes the 50 mm tapered bore, and the kit includes the KM 10 nut plus MB 10 washer for positive locking the H3 designation block places it in 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 — every sleeve in the block uses the same bore-code logic, and here the 50 mm tapered bore matches the K-suffix bearing it is ordered for hardware on this row: the KM 10 lock nut and the MB 10 locking washer; SKF lists the HMV 10 E hydraulic nut for mounting and dismounting typical applications include industrial fan and blower impeller shafts, gearbox input and output shafts and pump shafts in water and process plants adapter sleeves earn their place wherever a tapered-bore bearing must sit at any axial position on a plain shaft — here a 50 mm bore bearing on a 45 mm shaft in pump shafts in water and process plants the sleeve lets the designer use a plain, unstepped shaft and still locate the bearing positively; only one shoulder is needed, opposite the KM 10 nut kit identity for this seat: sleeve H 310 for a 45 mm shaft, 50x70x42 mm taper, M 50x1,5 thread, KM 10 nut with MB 10 washer, drive-up tool HMV 10 E, catalogue mass 270 g

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• greasing the tapered seat or shaft destroys the dry friction the joint relies on; a lubricated taper can let the whole sleeve spin under load
• misaligning the slit with the load zone or belt-pull direction concentrates stress on the split; orient the slit away from the main load
• interchanging nut families (KM vs KMFE, MB vs MS) across executions loses locking reliability even when the thread appears to fit