HH224346-310 bearing: complete specifications & equivalents
The HH224346-310 is a ISO 355 radial bearing sized 114.3 x 212.725 x 66.675 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 114.3 mm |
| Outer diameter D | 212.725 mm |
| Width B | 66.675 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 619 kN |
| Basic static load rating C0 | 830 kN |
| Fatigue load limit Pu | 88 kN |
| Reference speed (thermal) | 2200 rpm |
| Limiting speed (mechanical) | 3000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 10000 g |
| Manufacturer designation | SKF HH 224346/310 |
| Standard | ISO 355 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch single-row TRB |
| Last verified | 2026-09-28 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch single-row TRB) · extracted 2026-09-28
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch single-row TRB); 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 & HH224300-series range
| Bore d | 4.5 in |
|---|---|
| Outer diameter D | 8.375 in |
| Width B | 2.625 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 49.2 mm |
| Smallest bore in HH224300-series | 99.975 mm |
| Largest outer diameter in HH224300-series | 212.725 mm |
| Width range across HH224300-series | 66.675–66.675 mm |
| Bore position in HH224300-series (smallest first) | 3 of 4 |
| Bore above smallest HH224300-series size | 14.325000000000003 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| HH224346-HH224310 | NTN | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
| HH224346-310 | Timken | full Dimensions and internal design equivalent — standard interchange. | Same inch-series cone/cup boundary envelope (d/D/T); load ratings and speed limits are brand-specific and may differ. |
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 HH224346-310 model number is decoded
Mounting practice for HH224346: the rotating cone takes the interference fit (m6 on a 114.3 mm shaft), the cup slides for axial location, and reversing-thrust duty demands a paired O/X set rather than one bearing. Dimensional interchange map: within the HH200 series at 114.3 mm bore, the 212.725 mm OD and 66.675 mm width are fixed by the ISO 355 plan, so any same-code bearing from another brand shares the mounting envelope; the 49.2 mm section height distinguishes this family from a 302 or 322 of the same bore, and the 10000 g mass is the minimum—sealed or snap-ring executions add rotating weight above that catalogue baseline. Cup-side note for 310: the outer ring's rib profile and the 212.725 mm outside diameter are cup-specific within the HH224300-series tables, so substituting a different cup against the same HH 224346 cone changes both the assembled 66.675 mm width and the axial free-play setting of the mounted pair.SKF HH224346 (SKF HH 224346/310) is the HH224300-series tapered roller choice for a 114.3 mm shaft — one row of tapered rollers on an asymmetric raceway inside the 212.725×66.675 mm envelope.The code breaks down as cone/cup: the numbers before and after the slash identify the inner and outer ring sets, and the series prefix (HH224300-series) ties the pair to a specific boundary plan. Dimensions 114.3×212.725×66.675 mm are the converted metric envelope. SKF lists the plain number as the basic execution; letter suffixes such as B denote a steeper contact angle and are different order numbers. At 2,200 r/min reference speed the 49.2 mm-section HH224346 is governed thermally by preload and lubricant flow; grease or oil selection should be made against that value, with 3,000 r/min as the mechanical ceiling.
Typical equipment & failure modes
Common applications
- wind-turbine main shafts
- marine propulsion gearboxes
- large industrial mixer shafts
- marine propulsion gearboxes
Known failure patterns
- cup or cone misalignment when the separable rings are not seated square during mounting
- loose cup rotation in the housing when the specified press fit is not achieved
- axial overload spalling at the roller-rib contact beyond the single-row thrust rating
- false brinelling on idle paired sets exposed to machine vibration
- cage pocket scoring when the bearing starts cold with grease of too-high base-oil viscosity
- rib-roller contact scoring from loss of the EP additive film
Selection pitfalls — read before you substitute
- At 114.3 mm bore the cone mass is high enough that cocking during mounting damages the cage and rib; guide the ring square, confirm seat contact around the full circumference, and re-check setting after the first thermal cycle of the paired set.
- The HH224300-series inch series at 114.3 mm bore (212.725×66.675 mm) follows the Timken cone/cup convention; substitutions must match both the cone and cup reference exactly — interchanging with another series or a metric 3xxxx bearing of the same bore changes OD, width and contact angle, so re-run the pair setting and shoulder-diameter checks before swapping.
- When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of HH224346 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
- O (back-to-back) pairs are stiffer against moments, X (face-to-face) pairs tolerate misalignment and thermal growth better; choosing the arrangement from the 2D drawing rather than the actual shaft thermal expansion is a common HH224346 mounting error.
- Open HH224346 units need application-supplied sealing and a defined EP lubricant supply; the roller-rib contact is the first to fail when the additive film breaks down.
- The 619/830 kN ratings are SKF catalogue 17000 values for the basic execution; SKF can revise internal geometry without changing the order number, so keep the catalogue version (PUB BU/P1 17000/1 EN, 2018) with the specification and re-verify for critical drives.
- SKF lists several executions of HH224346 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF HH 224346/310 designation when purchasing and match the execution to the mounting arrangement.
Frequently asked questions
How does HH224346 compare with a ball bearing of the same bore?
A tapered roller bearing has line contact and a steep contact angle: much higher combined axial-plus-radial capacity and shock resistance than a ball bearing of the same bore, at the cost of speed, one-direction thrust, mandatory pairing for reversing loads and a minimum axial load requirement. A ball bearing cannot be dropped into a combined-load HH224346 position and vice versa — verify load direction, Fa/Fr ratio and speed before substituting.
What shaft and housing fits suit HH224346?
For a rotating shaft under normal load, seat the cone on a m6 shaft fit; the cup is usually a loose-to-transition fit in the housing so it can creep slightly and distribute wear. Chamfer and shoulder diameters must clear the bearing rings so the 66.675 mm-wide cup seats square; the mounting setting (end play or preload) is set by the axial position of the cup relative to the cone.
Is HH224346 interchangeable with other brands?
Inch-series tapered roller bearings follow a long-standing industry boundary plan, so cones and cups of the same basic number are generally dimensionally interchangeable across manufacturers. However, internal geometry, cage design and load ratings differ by brand, so for paired or precision applications keep both halves of the set from one manufacturer — or re-verify ratings and setting when mixing.
What are the dimensions and catalogue data of HH224346?
The SKF HH 224346/310 is a single-row tapered roller bearing with 114.3 mm bore, 212.725 mm outer diameter and 66.675 mm width (4.5 × 8.375 × 2.625 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 619 kN, C0 830 kN, fatigue load limit Pu 88 kN, reference speed 2,200 r/min, limiting speed 3,000 r/min, mass about 10000 g. It is an open, separable bearing with a pressed-steel cage.
How does the HH224346 inch-series designation work?
Inch-series tapered roller bearings use a Timken-style cone/cup convention: the number before the slash identifies the cone (inner ring with roller and cage assembly), the number after the slash identifies the cup (outer ring), and the HH224300-series code marks the dimensional series. The metric dimensions 114.3×212.725×66.675 mm are the converted equivalents of the original inch boundary dimensions.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch single-row TRB on 2026-09-28. Read our editorial & correction policy.