H-312-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-312-E model number is decoded

mounting and dismounting stay purely mechanical: the KMFE 12 nut drives the taper home, and backing the nut off releases the 60 mm seat without oil-injection tooling the OD-to-bore ratio is 1.33: the 80 mm sleeve OD is only 10 mm of section beyond the 60 mm seat, leaving room for the bearing outer ring without enlarging the housing bore the KMFE 12 lock nut carries size index 12, matching the bore-code family of the 60 mm seat; the nut engages the M 60x2 sleeve thread over its full width for controlled drive-up the catalogue pairs this seat with the HMV 12 E hydraulic nut (size 12); at 400 g the sleeve and bearing together are too heavy to seat reliably with a hook spanner alone this sleeve mounts a bearing with a 60 mm tapered bore onto a plain 55 mm shaft; the 80 mm outside diameter and 47 mm width define the tapered seat the bearing is driven onto at 55 mm shaft this is a mainstream workshop size; the M 60x2 nut can still be driven with a hook spanner alone, without hydraulic assistance the E variant simplifies the parts list for the 55 mm shaft: one KMFE 12 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 80 mm OD and 47 mm width follow the ISO 2982-1 boundary plan for that series hardware on this row: the KMFE 12 lock nut; SKF lists the HMV 12 E hydraulic nut for mounting and dismounting typical applications include paper machine roll and cylinder journals, marine winch and deck machinery shafts and mining crusher and screen exciter shafts adapter sleeves earn their place wherever a tapered-bore bearing must sit at any axial position on a plain shaft — here a 60 mm bore bearing on a 55 mm shaft in mining crusher and screen exciter 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 12 nut kit identity for this seat: sleeve H 312 E for a 55 mm shaft, 60x80x47 mm taper, M 60x2 thread, KMFE 12 self-locking nut, drive-up tool HMV 12 E, catalogue mass 400 g

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• the integral locking screw must be set to the catalogue torque; over-setting galls the M 60x2 thread and makes removal difficult
• mounting without a fixed abutment lets the bearing walk axially; the sleeve needs a shaft shoulder opposite the lock nut
• a fretted or corroded shaft seat cannot be rescued by a new sleeve — the thin wall conforms to the damage and clamping force collapses