HM807046-010 bearing: complete specifications & equivalents
The HM807046-010 is a ISO 355 radial bearing sized 50.8 x 104.775 x 36.512 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 50.8 mm |
| Outer diameter D | 104.775 mm |
| Width B | 36.512 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 180 kN |
| Basic static load rating C0 | 204 kN |
| Fatigue load limit Pu | 22.4 kN |
| Reference speed (thermal) | 5000 rpm |
| Limiting speed (mechanical) | 6300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1500 g |
| Manufacturer designation | SKF HM 807046/010 |
| 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 & HM807000-series range
| Bore d | 2 in |
|---|---|
| Outer diameter D | 4.125 in |
| Width B | 1.437 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 27 mm |
| Smallest bore in HM807000-series | 50.8 mm |
| Largest outer diameter in HM807000-series | 104.775 mm |
| Width range across HM807000-series | 36.512–36.512 mm |
| Bore position in HM807000-series (smallest first) | 1 of 1 |
| Bore above smallest HM807000-series size | 0 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| HM807046-HM807010 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 50.8×104.775×36.512 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| HM807046-010 | 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 HM807046-010 model number is decoded
Specify pairs rather than single units wherever thrust reverses: the tapered contact of HM807046 generates an induced axial load under radial force, and an unpaired bearing on a reversing shaft will run slack and fret its seat. Material and manufacturing detail: the 1500 g catalogue mass reflects through-hardened bearing steel (density ~7.85 g/cm³) machined to the HM800 ISO envelope, with the pressed-steel cage contributing roughly 45 g of the total; the 50.8 mm bore is ground to IT5 roundness and the 104.775 mm OD to IT5 cylindricity, and the 36.512 mm width tolerance keeps the pair-setting scatter within the ISO preload class. Two catalogue entries share the HM 807046 cone but use different cups; this one, HM807046, takes the 010 cup and is ground for the resulting 104.775 mm OD / 36.512 mm width envelope. Selecting a sibling cup produces a different boundary plan and a different order number, so the full designation is required at purchase.For a 50.8 mm shaft carrying combined load, SKF lists HM807046 under catalogue execution SKF HM 807046/010: one open single-row tapered roller bearing in the inch HM807000-series.The HM807000-series series assigns 50.8 mm bore, 104.775 mm OD and 36.512 mm width to HM807046; the cone and cup references are not interchangeable with other inch-series pairs even when the bore matches, because the cup profile and rib geometry are series-specific. 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 5,000 r/min reference speed the 27.0 mm-section HM807046 is governed thermally by preload and lubricant flow; grease or oil selection should be made against that value, with 6,300 r/min as the mechanical ceiling.
Typical equipment & failure modes
Common applications
- differential and pinion drives
- pump and compressor shafts
- machine-tool spindles
- pump and compressor shafts
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
- roller large-end smearing against the cone rib after EP lubricant film failure
- uneven load sharing in a pair when spacer faces are not parallel to the bore
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- mounting score marks when the cone is cocked over the shaft keyway or a burr
Selection pitfalls — read before you substitute
- On this 50.8 mm bore, interference and temperature rise consume clearance inside a preloaded pair; calculate the residual clearance after mounting and at operating temperature — an over-tight HM807046 pair heats, loses setting control and smears the roller-rib contact.
- The HM807000-series inch series at 50.8 mm bore (104.775×36.512 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.
- Do not mix brands or executions inside one HM807046 pair — matched sets are ground for a specific setting, and pairing a SKF basic unit with a different suffix variant will not share the setting evenly.
- When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of HM807046 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
- Open HM807046 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 180/204 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 HM807046 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF HM 807046/010 designation when purchasing and match the execution to the mounting arrangement.
Frequently asked questions
How does HM807046 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 HM807046 position and vice versa — verify load direction, Fa/Fr ratio and speed before substituting.
What shaft and housing fits suit HM807046?
For a rotating shaft under normal load, seat the cone on a k5 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 36.512 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 HM807046 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 HM807046?
The SKF HM 807046/010 is a single-row tapered roller bearing with 50.8 mm bore, 104.775 mm outer diameter and 36.512 mm width (2 × 4.125 × 1.437 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 180 kN, C0 204 kN, fatigue load limit Pu 22.4 kN, reference speed 5,000 r/min, limiting speed 6,300 r/min, mass about 1500 g. It is an open, separable bearing with a pressed-steel cage.
How does the HM807046 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 HM807000-series code marks the dimensional series. The metric dimensions 50.8×104.775×36.512 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.