H-313 adapter sleeve: complete specifications & mounting data
The H-313 is an adapter sleeve sized 65 x 85 x 50 mm (tapered bore x sleeve OD x width) for a plain 60 mm metric shaft with M 65x2 thread supplied with the KM 13 lock nut at 420 g per ISO 2982-1. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 65 mm |
| Outer diameter D | 85 mm |
| Width B | 50 mm |
| Fits shaft diameter | 60 mm |
| Sleeve thread G | M 65x2 |
| Included lock nut | KM 13 |
| Included locking device | MB 13 |
| Associated hydraulic nut | HMV 13 E |
| Material | Carbon_Steel |
| Mass | 420 g |
| Manufacturer designation | H 313 |
| 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 & H3-series range
| Bore d | 2.559 in |
|---|---|
| Outer diameter D | 3.346 in |
| Width B | 1.969 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 10 mm |
| Smallest bore in H3-series | 20 mm |
| Largest outer diameter in H3-series | 145 mm |
| Width range across H3-series | 28–77 mm |
| Bore position in H3-series (smallest first) | 10 of 18 |
| Bore above smallest H3-series size | 45 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-313 model number is decoded
mass 420 g is 6.5 g per mm of bore; the sleeve with its KM 13 nut and MB 13 washer forms the complete 50 mm-wide mounting assembly this sleeve mounts a bearing with a 65 mm tapered bore onto a plain 60 mm shaft; the 85 mm outside diameter and 50 mm width define the tapered seat the bearing is driven onto the 5 mm difference between the 60 mm shaft and the 65 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 65x2 thread spans about 25.0 nut turns across the 50 mm width; each indexed turn is a measurable drive-up step when setting the bearing clearance on the 65 mm seat the annular envelope between 65 mm bore and 85 mm OD is about 2,356 mm² in cross section, which sets the 420 g mass at steel density for the 50 mm-long slit bush the 60 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 65 mm bore the H prefix names the basic metric adapter sleeve: a slit 1:12-taper bush supplied complete with the KM 13 lock nut and MB 13 locking washer — bending one washer tab into a nut slot secures the assembly 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 85 mm OD and 50 mm width follow the ISO 2982-1 boundary plan for that series the delivery includes the KM 13 lock nut and the MB 13 locking washer, and the HMV 13 E hydraulic nut is the associated drive-up tool typical applications include rolling mill and steel plant roll seats, mining crusher and screen exciter shafts 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 65 mm bore bearing on a 60 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 13 nut kit identity for this seat: sleeve H 313 for a 60 mm shaft, 65x85x50 mm taper, M 65x2 thread, KM 13 nut with MB 13 washer, drive-up tool HMV 13 E, catalogue mass 420 g
Typical equipment & failure modes
Common applications
- quarry conveyor head and tail drums
- rolling mill and steel plant roll seats
- printing press cylinder journals
- conveyor pulley and drum bearing seats
Known failure patterns
- hammering the sleeve directly instead of driving through the nut damages the 50 mm slit edge
- 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
- the shaft must be within h9 tolerance and free of scoring; an oversize or rough shaft stops the slit sleeve closing down and leaves the grip to the thread alone
- over-driving the taper eliminates bearing internal clearance entirely; clearance reduction must be measured with feeler gauges, not estimated from nut torque
- mounting without a fixed abutment lets the bearing walk axially; the sleeve needs a shaft shoulder opposite the lock nut
Selection pitfalls — read before you substitute
- hammering the sleeve directly instead of driving through the nut damages the 50 mm slit edge
- 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
- the shaft must be within h9 tolerance and free of scoring; an oversize or rough shaft stops the slit sleeve closing down and leaves the grip to the thread alone
Frequently asked questions
What shaft size does the H-313 adapter sleeve fit?
H-313 (H 313) mounts on a plain metric shaft of 60 mm and carries a bearing with a 65 mm tapered (K) bore; sleeve OD is 85 mm and width 50 mm.
What does the H 313 designation mean?
H identifies a standard metric adapter sleeve in the H3 series; the size code encodes the 65 mm tapered bore (bore code × 5 mm).
What is supplied with the H-313?
The kit contains the KM 13 lock nut and MB 13 locking washer. The HMV 13 E hydraulic nut is the associated mounting tool.
How much does the H-313 adapter sleeve weigh?
The listed mass is 420 g for the sleeve assembly at 65x85x50 mm — about 8.4 g per millimetre of sleeve width.
How is the H-313 mounted on the shaft?
Lubricate the M 65x2 thread lightly, screw the KM 13 home, then tighten to the catalogue axial displacement while measuring clearance reduction on the 65 mm bearing, and finally bend the MB 13 washer 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.