LM245846-810 bearing: complete specifications & equivalents
The LM245846-810 is a ISO 355 radial bearing sized 230.188 x 317.5 x 47.625 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 230.188 mm |
| Outer diameter D | 317.5 mm |
| Width B | 47.625 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 556 kN |
| Basic static load rating C0 | 980 kN |
| Fatigue load limit Pu | 90 kN |
| Reference speed (thermal) | 1500 rpm |
| Limiting speed (mechanical) | 1800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 11000 g |
| Manufacturer designation | SKF LM 245846/810 |
| 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 & LM245800-series range
| Bore d | 9.063 in |
|---|---|
| Outer diameter D | 12.5 in |
| Width B | 1.875 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 43.7 mm |
| Smallest bore in LM245800-series | 230.188 mm |
| Largest outer diameter in LM245800-series | 317.5 mm |
| Width range across LM245800-series | 47.625–47.625 mm |
| Bore position in LM245800-series (smallest first) | 1 of 2 |
| Bore above smallest LM245800-series size | 0 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| LM245846-810 | 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 LM245846-810 model number is decoded
Journal and housing interface: the 230.188 mm bore takes a m6 shaft seat (upper deviation ~0.460 mm for this diameter range) and the 317.5 mm outside diameter pairs with an H7 housing bore tolerance band of 317.5.000/317.520 mm; the 47.625 mm width defines the shoulder depth, and the 11000 g cone-plus-cup assembly is the dead load on the shaft during thermal expansion calculations. Cup-side note for 810: the outer ring's rib profile and the 317.5 mm outside diameter are cup-specific within the LM245800-series tables, so substituting a different cup against the same LM 245846 cone changes both the assembled 47.625 mm width and the axial free-play setting of the mounted pair.For a 230.188 mm shaft carrying combined load, SKF lists LM245846 under catalogue execution SKF LM 245846/810: one open single-row tapered roller bearing in the inch LM245800-series.Numbering ties the bearing to its inch-series envelope: LM245846 means a cone and cup matched pair in the LM245800-series series — which is why the 230.188×317.5×47.625 mm outline swaps dimensionally with other inch-series bearings of the same code. SKF lists the plain number as the basic execution; letter suffixes such as B denote a steeper contact angle and are different order numbers. Speed planning uses two different ceilings: 1,500 r/min thermal reference and 1,800 r/min mechanical limiting speed. Note the minimum-axial-load requirement: at light radial load and high speed the rollers of LM245846 must still be held into the rib contact, which is another reason the catalogue recommends paired mounting with controlled setting.
Typical equipment & failure modes
Common applications
- marine propulsion gearboxes
- large industrial mixer shafts
- offshore winch and drawworks drums
- rolling-mill roll-neck bearings
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
- axial overload spalling at the roller-rib contact beyond the single-row thrust rating
- cage pocket scoring when the bearing starts cold with grease of too-high base-oil viscosity
- mounting score marks when the cone is cocked over the shaft keyway or a burr
Selection pitfalls — read before you substitute
- At 230.188 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 LM245800-series inch series at 230.188 mm bore (317.5×47.625 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 LM245846 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.
- The tapered contact angle creates an induced axial load under pure radial force; include it in the LM245846 rating calculation (and account for it in both bearings of a pair) or the unloaded bearing skids its rollers.
- The 11000 g mass and 47.625 mm width mean spacer and abutment faces must be square to the axis within the bearing's own P0 tolerance; a tilted spacer tilts the contact angle and concentrates load on one rib of LM245846.
- The 556/980 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 LM245846 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF LM 245846/810 designation when purchasing and match the execution to the mounting arrangement.
Frequently asked questions
What shaft and housing fits suit LM245846?
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 47.625 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 LM245846 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 LM245846?
The SKF LM 245846/810 is a single-row tapered roller bearing with 230.188 mm bore, 317.5 mm outer diameter and 47.625 mm width (9.063 × 12.5 × 1.875 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 556 kN, C0 980 kN, fatigue load limit Pu 90 kN, reference speed 1,500 r/min, limiting speed 1,800 r/min, mass about 11000 g. It is an open, separable bearing with a pressed-steel cage.
How does the LM245846 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 LM245800-series code marks the dimensional series. The metric dimensions 230.188×317.5×47.625 mm are the converted equivalents of the original inch boundary dimensions.
What do the cone and cup numbers in LM245846 mean?
The cone number (before the slash) identifies the inner ring, rollers and cage; the cup number (after the slash) identifies the outer ring. Both are quoted together because a single-row tapered roller bearing is a matched separable pair — the cone and cup are ground to work together and are not interchangeable with arbitrary other parts. The series prefix (LM245800-series) groups sizes that share the same boundary-dimension plan.
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.