H-209 adapter sleeve: complete specifications & mounting data
The H-209 is an adapter sleeve sized 45 x 65 x 33 mm (tapered bore x sleeve OD x width) for a plain 40 mm metric shaft with M 45x1,5 thread supplied with the KM 9 lock nut at 210 g per ISO 2982-1. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 45 mm |
| Outer diameter D | 65 mm |
| Width B | 33 mm |
| Fits shaft diameter | 40 mm |
| Sleeve thread G | M 45x1,5 |
| Included lock nut | KM 9 |
| Included locking device | MB 9 |
| Material | Carbon_Steel |
| Mass | 210 g |
| Manufacturer designation | H 209 |
| 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 | 1.772 in |
|---|---|
| Outer diameter D | 2.559 in |
| Width B | 1.299 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 10 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) | 6 of 17 |
| Bore above smallest H2-series size | 25 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-209 model number is decoded
mass 210 g is 4.7 g per mm of bore; the sleeve with its KM 9 nut and MB 9 washer forms the complete 33 mm-wide mounting assembly mounting and dismounting stay purely mechanical: the KM 9 nut drives the taper home, and backing the nut off releases the 45 mm seat without oil-injection tooling the 5 mm difference between the 40 mm shaft and the 45 mm nominal seat diameter is bridged by taper contraction as the slit sleeve closes during drive-up, rather than by machining the shaft the M 45x1,5 thread spans about 22.0 nut turns across the 33 mm width; each indexed turn is a measurable drive-up step when setting the bearing clearance on the 45 mm seat the annular envelope between 45 mm bore and 65 mm OD is about 1,728 mm² in cross section, which sets the 210 g mass at steel density for the 33 mm-long slit bush the 40 mm shaft diameter falls in the small-to-medium band that dominates general industrial use — pumps, fans and light gearboxes with bearings up to the 45 mm bore the H prefix names the basic metric adapter sleeve: a slit 1:12-taper bush supplied complete with the KM 9 lock nut and MB 9 locking washer — bending one washer tab into a nut slot secures the assembly dimensionally this sleeve belongs to the light-section H 2 range, commonly paired with 12..K self-aligning ball bearings; the 65 mm OD and 33 mm width follow the ISO 2982-1 boundary plan for that series the delivery includes the KM 9 lock nut and the MB 9 locking washer; drive-up is measured by clearance reduction as the bearing climbs the taper typical applications include rolling mill and steel plant roll seats, woodworking saw and planer spindles and textile machine roller shafts 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 textile machine roller 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 9 nut ordering digest — H 209: 40 mm plain shaft to 45 mm tapered bore, sleeve 65 mm OD and 33 mm wide, thread M 45x1,5, supplied with KM 9 nut with MB 9 washer; listed mass is 210 g
Typical equipment & failure modes
Common applications
- pump shafts in water and process plants
- rolling mill and steel plant roll seats
- gearbox input and output shafts
- agricultural machinery axle and PTO shafts
Known failure patterns
- mounting without a fixed abutment lets the bearing walk axially; the sleeve needs a shaft shoulder opposite the lock nut
- reusing a stretched locking washer tab invites fatigue failure; the bent tab snaps off and the nut backs off undetected
- 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
- a fretted or corroded shaft seat cannot be rescued by a new sleeve — the thin wall conforms to the damage and clamping force collapses
- misaligning the slit with the load zone or belt-pull direction concentrates stress on the split; orient the slit away from the main load
Selection pitfalls — read before you substitute
- mounting without a fixed abutment lets the bearing walk axially; the sleeve needs a shaft shoulder opposite the lock nut
- 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
- 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
Frequently asked questions
What shaft size does the H-209 adapter sleeve fit?
H 209 is listed for a 40 mm plain shaft; its tapered bore accepts 45 mm K-suffix bearings, the sleeve measures 65 mm OD and 33 mm wide.
What does the H 209 designation mean?
H 209: H-series metric adapter sleeve in the H2 dimension plan; the code resolves to a 45 mm tapered bore and a 40 mm shaft.
What is supplied with the H-209?
Supplied hardware is the KM 9 lock nut and MB 9 locking washer. No hydraulic tooling is listed for the 40 mm shaft size.
How much does the H-209 adapter sleeve weigh?
It weighs 210 g; the figure is the sleeve-only catalogue mass, with the KM 9 nut counted on the same product row but the hydraulic tool ordered separately.
How is the H-209 mounted on the shaft?
Slide the sleeve onto the 40 mm plain shaft against the abutment, fit the bearing, turn the KM 9 nut with a hook spanner until the measured clearance drop matches the table, and lock it with one MB 9 tab.
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.