H-319 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-319 model number is decoded

the M 95x2 thread spans about 34.0 nut turns across the 68 mm width; each indexed turn is a measurable drive-up step when setting the bearing clearance on the 95 mm seat a width-to-bore ratio of 0.72 gives a 68 mm tapered contact length; the longitudinal slit lets the sleeve close down radially, so the grip on the 85 mm shaft is purely frictional the annular envelope between 95 mm bore and 125 mm OD is about 5,184 mm² in cross section, which sets the 1,400 g mass at steel density for the 68 mm-long slit bush the OD-to-bore ratio is 1.32: the 125 mm sleeve OD is only 15 mm of section beyond the 95 mm seat, leaving room for the bearing outer ring without enlarging the housing bore mounting and dismounting stay purely mechanical: the KM 19 nut drives the taper home, and backing the nut off releases the 95 mm seat without oil-injection tooling with a 85 mm shaft this size crosses into the range where the associated HMV 19 E hydraulic nut becomes worthwhile for controlled drive-up the un-suffixed H catalogue number means the standard execution; the M 95x2 thread, the KM 19 nut and the MB 19 washer are dimensioned as one matched assembly for this seat 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 95 mm tapered bore matches the K-suffix bearing it is ordered for the KM 19 lock nut and the MB 19 locking washer ship in the kit; controlled drive-up uses the HMV 19 E hydraulic nut rather than a spanner typical applications include mining crusher and screen exciter shafts, rolling mill and steel plant roll seats and electric motor and generator shafts adapter sleeves earn their place wherever a tapered-bore bearing must sit at any axial position on a plain shaft — here a 95 mm bore bearing on a 85 mm shaft in electric motor and generator shafts the sleeve lets the designer use a plain, unstepped shaft and still locate the bearing positively; only one shoulder is needed, opposite the KM 19 nut kit identity for this seat: sleeve H 319 for a 85 mm shaft, 95x125x68 mm taper, M 95x2 thread, KM 19 nut with MB 19 washer, drive-up tool HMV 19 E, catalogue mass 1,400 g

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• reusing a stretched locking washer tab invites fatigue failure; the bent tab snaps off and the nut backs off undetected
• hammering the sleeve directly instead of driving through the nut damages the 68 mm slit edge
• a plain KM nut used without its MB washer has no anti-rotation feature and will unthread under vibration