Cross-brand designation analysis
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Same-model Comparison
Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.
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One base designation across loaded brands
Exact designations rank first. Dimensions, suffixes and other technical differences remain visible so the result is not mistaken for an interchangeability declaration.
Dimensions verified
“23188” across 5 loaded brands
At least two brands share the same bore, outside diameter and width. Use Custom Compare when you want to choose exact suffix variants yourself.
Technical comparison
Choose exact variants instead →Brand differences at a glance
| Parameter | SKF23188 CA/W33440 × 720 × 226 mm | FAG23188-BEA-XL-MB1440 × 720 × 226 mm | TIMKEN23188KYMBW906A440 × 720 × 226 mm | NSK23188CAME4440 × 720 × 226 mm | KOYO23188R440 × 720 × 226 mm |
|---|---|---|---|---|---|
| Comparable specifications | |||||
| Brand | SKF | FAG | TIMKEN | NSK | KOYO |
| Designation | 23188 CA/W33 | 23188-BEA-XL-MB1 | 23188KYMBW906A | 23188CAME4 | 23188R |
| Product family | Spherical roller bearings | — | Radial SRB | Spherical roller bearing | Spherical roller bearings |
| Detailed type | Spherical roller bearing with relubrication features | Spherical roller bearings | Spherical roller bearings | Spherical roller bearings | Spherical roller bearings |
| Series | — | 23188 | EX27314 | — | — |
| Bore diameterd | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
| Outside diameterD | 720 mm | 720 mm | 720 mm | 720 mm | 720 mm |
| WidthB | 226 mm | 226 mm | 226 mm | 226 mm | 226 mm |
| Basic dynamic load ratingC | 6215 kN | 6200 kN | 5970 kN | 5300 kN | 5800 kN |
| Basic static load ratingC0 | 10000 kN | 10200 kN | 10300 kN | 10300 kN | 9600 kN |
| Fatigue load limitPu | 655 kN | 700 kN | — | — | 591 kN |
| Reference speednref | 450 r/min | 430 r/min | — | — | — |
| Limiting speednG | 850 r/min | 820 r/min | — | — | 330 r/min |
| Mass≈m | 363 kg | 361 kg | 355.38 kg | 360 kg | 378 kg |
| Precision class | Normal | — | — | — | — |
| Internal clearance | CN | CN (Group N) — Normal internal clearance | — | CN | — |
| Sealing | Without | — | Open | — | — |
| Cage | Machined brass | MB1 — Solid brass cage | Brass cage | Machined brass | — |
| Lubricant | None | — | — | — | — |
| Minimum operating temperatureTmin | — | -30 °C | — | — | — |
| Maximum operating temperatureTmax | — | 200 °C | — | — | — |
| Boundary dimensions | |||||
| Bearing widthB | — | — | — | 226 mm | — |
| Minimum bearing chamferr min. | — | — | — | 6 mm | — |
| Calculation Factors | |||||
| K Factor | — | — | 0.00 | — | — |
| Y1 Factor | — | — | 2.26 | — | — |
| Y2 Factor | — | — | 3.37 | — | — |
| Y0 Factor | — | — | 2.21 | — | — |
| E Factor | — | — | 0.30 | — | — |
| Cg Factor | — | — | 0.1549 | — | — |
| Calculation factors | |||||
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Ye | — | 0.3 | — | — | — |
| Dynamic axial load factorY1 | — | 2.25 | — | — | — |
| Dynamic axial load factorY2 | — | 3.34 | — | — | — |
| Static axial load factorY0 | — | 2.2 | — | 2.2 | — |
| Capabilities & suitability | |||||
| Radial load capacity | — | Yes | — | — | — |
| Axial load capacity in one direction | — | Yes | — | — | — |
| Axial load capacity in both directions | — | Yes | — | — | — |
| Suitable for grease lubrication | — | Yes | — | — | — |
| Suitable for oil lubrication | — | Yes | — | — | — |
| Unsealed design | — | Yes | — | — | — |
| Largebearing | — | Yes | — | — | — |
| Staticangularerrorandmisalignment | — | Yes | — | — | — |
| Dynamicangularerrorandmisalignment | — | Yes | — | — | — |
| Classification | |||||
| Official Category Path | — | — | — | — | Spherical roller bearings - Spherical roller bearings |
| Official Classification 1 | — | — | — | — | Spherical roller bearings |
| Construction | |||||
| Bore construction | — | — | — | Cylindrical bore | — |
| Cage material and manufacture | — | — | — | Machined brass | — |
| Outer-ring lubrication features | — | — | — | E4: oil groove and oil holes | — |
| Internal clearance — catalogue omission rule | — | — | — | CN (normal), where no clearance suffix is specified | — |
| Precision — catalogue omission rule | — | — | — | ISO Normal, where no precision suffix is specified | — |
| Catalogue NSK HPS marking | — | — | — | No HPS asterisk in this row | — |
| Dimensions | |||||
| Minimum chamfer dimensionrmin | — | 6 mm | — | — | — |
| Minimum chamfer dimensionrmin | — | 0.236 in | — | — | — |
| Bore diameter outer ringD1 | — | 630.2 mm | — | — | — |
| Bore diameter outer ringD1 | — | 24.811 in | — | — | — |
| Diameter lubrication holeds | — | 12.5 mm | — | — | — |
| Diameter lubrication holeds | — | 0.492 in | — | — | — |
| Width of lubricating groovens | — | 23.5 mm | — | — | — |
| Width of lubricating groovens | — | 0.925 in | — | — | — |
| Engineering — Abutment dimensions | |||||
| Diameter of shaft abutmentd a | min. 466 mm | — | — | — | — |
| Diameter of housing abutmentD a | max. 694 mm | — | — | — | — |
| Radius of filletr a | max. 5 mm | — | — | — | — |
| Engineering — Calculation data | |||||
| SKF performance class | SKF Explorer | — | — | — | — |
| Limiting valuee | 0.3 | — | — | — | — |
| Calculation factorY 1 | 2.3 | — | — | — | — |
| Calculation factorY 2 | 3.4 | — | — | — | — |
| Calculation factorY 0 | 2.2 | — | — | — | — |
| Engineering — Dimensions | |||||
| Deviation limits of mid-range bore diametert Δdmp | -0.045 to 0 mm | — | — | — | — |
| Deviation limits of mid-range outside diametert ΔDmp | -0.075 to 0 mm | — | — | — | — |
| Deviation limits of ring widtht ΔBs | -0.45 to 0 mm | — | — | — | — |
| Shoulder diameter of inner ringd 2 | ≈ 529 mm | — | — | — | — |
| Shoulder/recess diameter of outer ringD 1 | ≈ 632 mm | — | — | — | — |
| Width of lubrication grooveb | 22.3 mm | — | — | — | — |
| Diameter of lubrication holeK | 12 mm | — | — | — | — |
| Chamfer dimensionr 1,2 | min. 6 mm | — | — | — | — |
| ISO tolerance class for dimensions | Normal | — | — | — | — |
| Engineering — Engineering specifications | |||||
| Bore type | Cylindrical | — | — | — | — |
| Engineering — Radial internal clearance | |||||
| Minimum initial clearance | 240 µm | — | — | — | — |
| Maximum initial clearance | 370 µm | — | — | — | — |
| Engineering — Tolerances of run-out | |||||
| Range of section height at inner ring of assembled bearingt Kia | 65 µm | — | — | — | — |
| Range of section height at outer ring of assembled bearingt Kea | 120 µm | — | — | — | — |
| ISO tolerance class for geometrical tolerances | Normal | — | — | — | — |
| Equivalent-load factors | |||||
| Dynamic load ratio thresholde | — | — | — | 0.3 | — |
| Dynamic axial factor above thresholdY2 | — | — | — | 3.3 | — |
| Dynamic axial factor at or below thresholdY3 | — | — | — | 2.2 | — |
| Load ratings | |||||
| Basic dynamic radial load ratingCr | — | — | — | 5300000 N | — |
| Basic static radial load ratingC0r | — | — | — | 10300000 N | — |
| Logistics | |||||
| Product net weight | 363.0 kg | — | — | — | — |
| eClass code | 23-05-09-11 | — | — | — | — |
| UNSPSC code | 31171510 | — | — | — | — |
| Lubrication-qualified speed | |||||
| Thermal speed rating — oil bath | — | — | — | 430 r/min | — |
| Mechanical limiting speed — forced oil circulation | — | — | — | Not stated in this catalogue row | — |
| Limiting speed — grease | — | — | — | 320 r/min | — |
| Limiting speed — oil bath | — | — | — | 430 r/min | — |
| Main Dimensions & Performance Data | |||||
| Basic dynamic load rating, radialCr | — | 6,200,000 N | — | — | — |
| Basic dynamic load rating, radialCr | — | 1,393,884.892 lbf | — | — | — |
| Basic static load rating, radialC0r | — | 10,200,000 N | — | — | — |
| Basic static load rating, radialC0r | — | 2,293,165.468 lbf | — | — | — |
| Fatigue load limit, radialCur | — | 700,000 N | — | — | — |
| Fatigue load limit, radialCur | — | 157,374.101 lbf | — | — | — |
| Manufacturer Identity | |||||
| Schaeffler Product Code | — | 390657 | — | — | — |
| Material Number | — | — | 000000000100149127 | — | — |
| Official Class Key | — | — | — | — | 060-010-000 |
| Base Type | — | 23188 | — | — | — |
| World Assembly Part Number | — | — | 23188KYMBW906A | — | — |
| Old Designation | — | ["23188-E1A-MB1","23188-MB"] | — | — | — |
| Inner Ring Part Number | — | — | 440ASDY31KW40C02 | — | — |
| Gpsd Group | — | F03 | — | — | — |
| Outer Ring Part Number | — | — | 440ESDC31W33C04 | — | — |
| Product Line Id | — | 78 | — | — | — |
| Drawing Number | — | — | M80130 | — | — |
| X Life Marking | — | XL | — | — | — |
| Upc | — | — | 0087796210288 | — | — |
| Official Source System | — | — | CORE BP - DS DF | — | — |
| Official Last Run | — | — | 2026-08-23T20:02:47.84 | — | — |
| SAP material number | — | 0863257100000 | — | — | — |
| Base product | — | 2305091122 | — | — | — |
| Bearing X designation | — | 23188-BEA-XL-MB1 | — | — | — |
| Mounting Manager ID | — | 23188-BEA-XL-MB1 | — | — | — |
| Grease application ID | — | 23188-BEA-XL-MB1 | — | — | — |
| Mounting dimensions | |||||
| Minimum shaft shoulder diameterda min. | — | — | — | 468 mm | — |
| Maximum shaft shoulder diameterda max. | — | — | — | Not stated in this catalogue row | — |
| Maximum housing shoulder diameterDa max. | — | — | — | 692 mm | — |
| Minimum housing shoulder diameterDa min. | — | — | — | 627 mm | — |
| Maximum adjacent fillet radiusra max. | — | — | — | 5 mm | — |
| Minimum diameter shaft shoulderda min | — | 466 mm | — | — | — |
| Minimum diameter shaft shoulderda min | — | 18.346 in | — | — | — |
| Maximum diameter of housing shoulderDa max | — | 694 mm | — | — | — |
| Maximum diameter of housing shoulderDa max | — | 27.323 in | — | — | — |
| Maximum recess radiusra max | — | 5 mm | — | — | — |
| Maximum recess radiusra max | — | 0.197 in | — | — | — |
| Product characteristics | |||||
| DesignBEA | — | With lose center lip ring | — | — | — |
| Bore typeZ | — | Cylindrical | — | — | — |
| Radial internal clearanceCN (Group N) | — | Normal internal clearance | — | — | — |
| Relubrication feature | With | Standard | — | — | — |
| Product identity | |||||
| Official product category | Spherical roller bearings | — | — | — | — |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/spherical-roller-bearings | — | — | — | — |
| Structure group ID | BS2_001 | — | — | — | — |
| Available from SKF | Yes | — | — | — | — |
| Remanufacturable | Yes | — | — | — | — |
| Product Identity | |||||
| Construction | — | Spherical roller bearing 231..-BEA-XL-MB1, symmetric 2 outer ribs with rib washer | Spherical Roller Bearing | Imperial Series | 17.3228 in Bore | 28.3465 in OD | 8.8976 in Width | Open | Tapered Bore | Brass Cage | C0 Clearance | Bearing contains application features | — | — |
| Type Description | — | — | Radial SRB | — | — |
| Short Description | — | Spherical Roller Bearing | — | — | — |
| Number Of Rows | 2 | — | 2 | — | — |
| Tapered Bore | — | — | Y | — | — |
| Properties | |||||
| Locating feature, bearing outer ring | Without | — | — | — | — |
| Radial internal clearance | CN | — | — | — | — |
| Tolerance class for dimensions | Normal | — | — | — | — |
| Tolerance class for run-out | Normal | — | — | — | — |
| Candidate for remanufacturing | Yes | — | — | — | — |
| Indicative carbon footprint for new product | 1343.0 kg CO 2 e | — | — | — | — |
| Indicative carbon footprint for remanufactured product | 446.0 kg CO 2 e | — | — | — | — |
| Reference mass | |||||
| Approximate catalogue mass | — | — | — | 360 kg | — |
| Technical Data | |||||
| d | — | — | — | — | 720 mm |
| B | — | — | — | — | 226 mm |
| R(Min.) | — | — | — | — | 6 mm |
| Basic Load Ratings : Cr | — | — | — | — | 5800 kN |
| Bore Diameter (D) | — | 440 mm | — | — | — |
| Overall Width | — | — | 0.000 mm | — | — |
| Basic Load Ratings : C0R | — | — | — | — | 9600 kN |
| Outside Diamater (D) | — | 720 mm | — | — | — |
| Radial Rating | — | — | 5,970,000 N | — | — |
| Fatigue Load Limit : Cu | — | — | — | — | 591 kN |
| Total Width (B) | — | 226 mm | — | — | — |
| Axial Rating | — | — | 0 N | — | — |
| Limiting Speeds(Grease Lub.) | — | — | — | — | 330 min-1 |
| Basic Dynamic Load Rating, Radial (Cr) | — | 6,200,000 N | — | — | — |
| Dynamic Rating C1 | — | — | 5,970,000 N | — | — |
| Limiting Speeds(Oil Lub.) | — | — | — | — | 440 min-1 |
| Basic Static Load Rating, Radial (C0R) | — | 10,200,000 N | — | — | — |
| Dynamic Rating C90 | — | — | 0 N | — | — |
| Constant E | — | — | — | — | 0.33 |
| Diameter Lubrication Hole (Ds) | — | 12.5 mm | — | — | — |
| Dynamic Axial Rating Ca90 | — | — | 0 N | — | — |
| Axial Load Factors : Y1 | — | — | — | — | 2.08 |
| Operating Temperature Min. (Tmin) | — | -30 °C | — | — | — |
| Dynamic Axial Rating Ca1 | — | — | 0 N | — | — |
| Axial Load Factors : Y2 | — | — | — | — | 3.09 |
| Minimum Diameter Shaft Shoulder (Da) | — | 466 mm | — | — | — |
| Static Radial Rating C0 | — | — | 10,300,000 N | — | — |
| Axial Load Factors : Y0 | — | — | — | — | 2.03 |
| Operating Temperature Max. (Tmax) | — | 200 °C | — | — | — |
| Extended Dynamic Rating Ce | — | — | 0 N | — | — |
| Da(Min.) | — | — | — | — | 468 mm |
| Limiting Speed (Limiting Spe) | — | 820 1/min | — | — | — |
| Static Axial Rating C0A | — | — | 0 N | — | — |
| Da(Max.) | — | — | — | — | 692 mm |
| Reference Speed (Nϑr) | — | 430 1/min | — | — | — |
| Ra(Max.) | — | — | — | — | 5 mm |
| Maximum Recess Radius (Ra Max) | — | 5 mm | — | — | — |
| Mass(Refer.) | — | — | — | — | 378 kg |
| Maximum Diameter Of Housing Shoulder (Da) | — | 694 mm | — | — | — |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | — | 0.3 | — | — | — |
| Width Of Lubricating Groove (Ns) | — | 23.5 mm | — | — | — |
| Dynamic Axial Load Factor (Y1) | — | 2.25 | — | — | — |
| Bore Diameter Outer Ring (D1) | — | 630.2 mm | — | — | — |
| Minimum Chamfer Dimension (Rmin) | — | 6 mm | — | — | — |
| Static Axial Load Factor (Y0) | — | 2.2 | — | — | — |
| Dynamic Axial Load Factor (Y2) | — | 3.34 | — | — | — |
| Fatigue Load Limit, Radial (Cur) | — | 700,000 N | — | — | — |
| Temperature range | |||||
| Operating temperature min.Tmin | — | -30 °C | — | — | — |
| Operating temperature min.Tmin | — | -22 °F | — | — | — |
| Operating temperature max.Tmax | — | 200 °C | — | — | — |
| Operating temperature max.Tmax | — | 392 °F | — | — | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.