H-309-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-309-E 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 KMFE 9 nut on the M 45x1,5 thread advances 1.5 mm and takes out roughly 0.125 mm of clearance the OD-to-bore ratio is 1.44: the 65 mm sleeve OD is only 10 mm of section beyond the 45 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 — 22.2% of the 45 mm bore — thin enough to contract evenly onto the 40 mm shaft while keeping the seat round under the clamping load a width-to-bore ratio of 0.87 gives a 39 mm tapered contact length; the longitudinal slit lets the sleeve close down radially, so the grip on the 40 mm shaft is purely frictional mass 240 g is 5.3 g per mm of bore; the sleeve with its KMFE 9 nut forms the complete 39 mm-wide mounting assembly at 40 mm shaft this is a mainstream workshop size; the M 45x1,5 nut can still be driven with a hook spanner alone, without hydraulic assistance the E variant simplifies the parts list for the 40 mm shaft: one KMFE 9 nut replaces nut plus washer, which also removes the risk of a forgotten or wrongly seated MB washer 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 65 mm OD and 39 mm width follow the ISO 2982-1 boundary plan for that series hardware on this row: the KMFE 9 lock nut; a hook spanner turns the nut while feeler gauges monitor the 45 mm bore typical applications include food processing line drive shafts, electric motor and generator shafts and quarry conveyor head and tail drums adapter sleeves earn their place wherever a tapered-bore bearing must sit at any axial position on a plain shaft — here a 45 mm bore bearing on a 40 mm shaft in quarry conveyor head and tail drums the sleeve lets the designer use a plain, unstepped shaft and still locate the bearing positively; only one shoulder is needed, opposite the KMFE 9 nut ordering digest — H 309 E: 40 mm plain shaft to 45 mm tapered bore, sleeve 65 mm OD and 39 mm wide, thread M 45x1,5, supplied with KMFE 9 self-locking nut; listed mass is 240 g

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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
• mounting without a fixed abutment lets the bearing walk axially; the sleeve needs a shaft shoulder opposite the lock nut