H-219 adapter sleeve: complete specifications & mounting data
The H-219 is an adapter sleeve sized 95 x 125 x 55 mm (tapered bore x sleeve OD x width) for a plain 85 mm metric shaft with M 95x2 thread supplied with the KM 19 lock nut at 1,250 g per ISO 2982-1. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 95 mm |
| Outer diameter D | 125 mm |
| Width B | 55 mm |
| Fits shaft diameter | 85 mm |
| Sleeve thread G | M 95x2 |
| Included lock nut | KM 19 |
| Included locking device | MB 19 |
| Associated hydraulic nut | HMV 19E |
| Material | Carbon_Steel |
| Mass | 1250 g |
| Manufacturer designation | H 219 |
| Standard | ISO 2982-1 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 23.1 adapter sleeves for metric shafts |
| Last verified | 2026-09-30 |
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.
Dimensions in inches & H2-series range
| Bore d | 3.74 in |
|---|---|
| Outer diameter D | 4.921 in |
| Width B | 2.165 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 15 mm |
| Smallest bore in H2-series | 20 mm |
| Largest outer diameter in H2-series | 145 mm |
| Width range across H2-series | 24–63 mm |
| Bore position in H2-series (smallest first) | 15 of 17 |
| Bore above smallest H2-series size | 75 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| H | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; standard interchange — confirm clearance class and precision with the supplier. |
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-219 model number is decoded
the 10 mm difference between the 85 mm shaft and the 95 mm nominal seat diameter is bridged by taper contraction as the slit sleeve closes during drive-up, rather than by machining the shaft mass 1,250 g is 13.2 g per mm of bore; the sleeve with its KM 19 nut and MB 19 washer forms the complete 55 mm-wide mounting assembly the M 95x2 thread spans about 27.5 nut turns across the 55 mm width; each indexed turn is a measurable drive-up step when setting the bearing clearance on the 95 mm seat the annular envelope between 95 mm bore and 125 mm OD is about 5,184 mm² in cross section, which sets the 1,250 g mass at steel density for the 55 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 at 85 mm shaft the sleeve suits mid-size machinery — conveyor pulleys, industrial fans and gearbox output shafts carrying 95 mm bore bearings H identifies the conventional sleeve used by maintenance crews worldwide: tighten KM 19, verify clearance, lock with one MB 19 tab, and the 85 mm shaft needs no thread or step dimensionally this sleeve belongs to the light-section H 2 range, commonly paired with 12..K self-aligning ball bearings; the 125 mm OD and 55 mm width follow the ISO 2982-1 boundary plan for that series hardware on this row: the KM 19 lock nut and the MB 19 locking washer; SKF lists the HMV 19E hydraulic nut for mounting and dismounting typical applications include paper machine roll and cylinder journals, electric motor and generator 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 95 mm bore bearing on a 85 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 KM 19 nut full specification chain for H 219 reads 85 mm shaft / 95 mm seat / 125 mm OD / 55 mm width / M 95x2 / KM 19 nut with MB 19 washer, drive-up tool HMV 19E / 1,250 g
Typical equipment & failure modes
Common applications
- printing press cylinder journals
- paper machine roll and cylinder journals
- conveyor pulley and drum bearing seats
- industrial fan and blower impeller shafts
Known failure patterns
- 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
- bending more than one washer tab to force alignment work-hardens both tabs; choose the single closest slot only
- neglecting the catalogue axial displacement value leaves the bearing either loose on the taper or preloaded hot in service
- 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
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
- neglecting the catalogue axial displacement value leaves the bearing either loose on the taper or preloaded hot in service
- a plain KM nut used without its MB washer has no anti-rotation feature and will unthread under vibration
Frequently asked questions
What shaft size does the H-219 adapter sleeve fit?
the fit is 85 mm shaft to 95 mm bearing bore via the 1:12 taper; H-219 has a 125 mm outside diameter and a 55 mm overall width.
What does the H 219 designation mean?
the letters give the execution and the digits give the bore: H 219 belongs to H2, fits 95 mm tapered-bore bearings, using a separate lock nut and locking element.
What is supplied with the H-219?
You receive the sleeve plus KM 19 lock nut and MB 19 locking washer. One nut turn on the M 95x2 thread advances 2 mm along the 1:12 taper.
How much does the H-219 adapter sleeve weigh?
1,250 g for the 55 mm-long slit bush — the equivalent of 13.2 g per millimetre of the 95 mm bore.
How is the H-219 mounted on the shaft?
Mount dry and clean: drive the bearing up the 1:12 taper by turning KM 19 on the M 95x2 thread, using the HMV 19E hydraulic nut for force, verify clearance with feeler gauges, then apply the MB 19 locking washer.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 23.1 adapter sleeves for metric shafts on 2026-09-30. Read our editorial & correction policy.