HM231132-110 bearing: complete specifications & equivalents
The HM231132-110 is a ISO 355 radial bearing sized 139.7 x 236.538 x 57.15 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 139.7 mm |
| Outer diameter D | 236.538 mm |
| Width B | 57.15 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 629 kN |
| Basic static load rating C0 | 850 kN |
| Fatigue load limit Pu | 86.5 kN |
| Reference speed (thermal) | 2200 rpm |
| Limiting speed (mechanical) | 2600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 10000 g |
| Manufacturer designation | SKF HM 231132/110 |
| 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 & HM231100-series range
| Bore d | 5.5 in |
|---|---|
| Outer diameter D | 9.313 in |
| Width B | 2.25 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 48.4 mm |
| Smallest bore in HM231100-series | 139.7 mm |
| Largest outer diameter in HM231100-series | 236.538 mm |
| Width range across HM231100-series | 57.15–57.15 mm |
| Bore position in HM231100-series (smallest first) | 1 of 2 |
| Bore above smallest HM231100-series size | 0 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| HM231132-110 | 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 HM231132-110 model number is decoded
Specify pairs rather than single units wherever thrust reverses: the tapered contact of HM231132 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 10000 g catalogue mass reflects through-hardened bearing steel (density ~7.85 g/cm³) machined to the HM200 ISO envelope, with the pressed-steel cage contributing roughly 300 g of the total; the 139.7 mm bore is ground to IT5 roundness and the 236.538 mm OD to IT5 cylindricity, and the 57.15 mm width tolerance keeps the pair-setting scatter within the ISO preload class. The cup reference 110 is structural, not a suffix: it identifies the outer ring that, combined with the HM 231132 cone, produces the 139.7/236.538/57.15 mm envelope catalogue-listed as HM231132. Quote the cup number in full when ordering — the HM231100-series tables contain other cups that fit the same cone but change the bearing.In SKF catalogue PUB BU/P1 17000, HM231132 appears as SKF HM 231132/110: an open, single-row tapered roller bearing in the HM231100-series, supplied with a pressed-steel cage as standard.The HM231100-series series assigns 139.7 mm bore, 236.538 mm OD and 57.15 mm width to HM231132; 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. With C 629 kN and C0 850 kN, the HM231132 pair-sizing check is dominated by the axial share: keep the equivalent load P below the rating at the required L10, remembering one bearing alone cannot cover reversing thrust at 2,600 r/min.
Typical equipment & failure modes
Common applications
- rolling-mill roll-neck bearings
- heavy-duty rolling-mill gearboxes
- large crusher and mineral-processing drives
- heavy-duty rolling-mill 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
- preload loss as the mounted pair relaxes, letting rollers skid and smear the raceways
- roller large-end smearing against the cone rib after EP lubricant film failure
- cage pocket scoring when the bearing starts cold with grease of too-high base-oil viscosity
- rolling-contact fatigue spalling after the rated L10 life is exceeded
Selection pitfalls — read before you substitute
- At 139.7 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 HM231100-series inch series at 139.7 mm bore (236.538×57.15 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 HM231132 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.
- At the 629 kN rating of HM231132, preload class changes stiffness by tens of percent but also heat generation; select light preload for the 2,600 r/min speed end and heavier preload only where moment stiffness dominates.
- Never press both rings through the wrong element during fitting: force for an interference shaft seat goes through the cone only, or brinell marks on the 236.538 mm cup race release as noise within the first running hours.
- The 629/850 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 HM231132 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF HM 231132/110 designation when purchasing and match the execution to the mounting arrangement.
Frequently asked questions
How does HM231132 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 HM231132 position and vice versa — verify load direction, Fa/Fr ratio and speed before substituting.
What shaft and housing fits suit HM231132?
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 57.15 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 HM231132 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 HM231132?
The SKF HM 231132/110 is a single-row tapered roller bearing with 139.7 mm bore, 236.538 mm outer diameter and 57.15 mm width (5.5 × 9.313 × 2.25 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 629 kN, C0 850 kN, fatigue load limit Pu 86.5 kN, reference speed 2,200 r/min, limiting speed 2,600 r/min, mass about 10000 g. It is an open, separable bearing with a pressed-steel cage.
How does the HM231132 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 HM231100-series code marks the dimensional series. The metric dimensions 139.7×236.538×57.15 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.