H-318-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-318-E model number is decoded

for controlled drive-up the catalogue pairs this seat with the HMV 18 E hydraulic nut (size 18); at 1,450 g the sleeve and bearing together are too heavy to seat reliably with a hook spanner alone the annular envelope between 90 mm bore and 120 mm OD is about 4,948 mm² in cross section, which sets the 1,450 g mass at steel density for the 65 mm-long slit bush the sleeve wall is 15 mm thick at the small end — 16.7% of the 90 mm bore — thin enough to contract evenly onto the 80 mm shaft while keeping the seat round under the clamping load this sleeve mounts a bearing with a 90 mm tapered bore onto a plain 80 mm shaft; the 120 mm outside diameter and 65 mm width define the tapered seat the bearing is driven onto 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 18 nut on the M 90x2 thread advances 2 mm and takes out roughly 0.167 mm of clearance the 80 mm seat is heavy enough that clearance is set by measured drive-up on the M 90x2 thread, yet light enough that a two-person crew can still mount it conventionally the E-suffix sleeve is paired with the KMFE 18 nut — its integral locking screw clamps the nut to the thread, a cleaner solution than a bent washer tab where the 90 mm seat is remounted often the H3 block is one of the ISO 2982-1 dimension plans; at this seat it means a 120 mm sleeve OD and the M 90x2 thread shared with the adjacent bore steps the catalogue row bundles the KMFE 18 lock nut and references the HMV 18 E hydraulic nut for the 90 mm seat typical applications include marine winch and deck machinery shafts, paper machine roll and cylinder journals and cement plant kiln and mill trunnion drives adapter sleeves earn their place wherever a tapered-bore bearing must sit at any axial position on a plain shaft — here a 90 mm bore bearing on a 80 mm shaft in cement plant kiln and mill trunnion drives the sleeve lets the designer use a plain, unstepped shaft and still locate the bearing positively; only one shoulder is needed, opposite the KMFE 18 nut ordering digest — H 318 E: 80 mm plain shaft to 90 mm tapered bore, sleeve 120 mm OD and 65 mm wide, thread M 90x2, supplied with KMFE 18 self-locking nut, drive-up tool HMV 18 E; listed mass is 1,450 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
• the integral locking screw must be set to the catalogue torque; over-setting galls the M 90x2 thread and makes removal difficult
• misaligning the slit with the load zone or belt-pull direction concentrates stress on the split; orient the slit away from the main load