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| Parameter | SKF23948 CC/W33240 × 320 × 60 mm | FAG23948-MB240 × 320 × 60 mm | TIMKEN23948EMW33240 × 320 × 60 mm | NSK23948CAME4240 × 320 × 60 mm | KOYO23948R240 × 320 × 60 mm |
|---|---|---|---|---|---|
| Comparable specifications | |||||
| Brand | SKF | FAG | TIMKEN | NSK | KOYO |
| Designation | 23948 CC/W33 | 23948-MB | 23948EMW33 | 23948CAME4 | 23948R |
| 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 | — | 23948 | EX27485 | — | — |
| Bore diameterd | 240 mm | 240 mm | 240 mm | 240 mm | 240 mm |
| Outside diameterD | 320 mm | 320 mm | 320 mm | 320 mm | 320 mm |
| WidthB | 60 mm | 60 mm | 60 mm | 60 mm | 60 mm |
| Basic dynamic load ratingC | 685 kN | 640 kN | 785 kN | 795 kN | 814 kN |
| Basic static load ratingC0 | 1160 kN | 1370 kN | 1340 kN | 1300 kN | 1380 kN |
| Fatigue load limitPu | 98 kN | 96 kN | — | — | 128 kN |
| Reference speednref | 1900 r/min | 1310 r/min | — | — | — |
| Limiting speednG | 2000 r/min | 2440 r/min | — | — | 940 r/min |
| Mass≈m | 13 kg | 13.39 kg | 12.93 kg | 13.3 kg | 14 kg |
| Precision class | Normal | — | — | — | — |
| Internal clearance | CN | CN (Group N) — Normal internal clearance | — | CN | — |
| Sealing | Without | — | Open | — | — |
| Cage | Sheet metal | MB — Solid brass cage | Brass cage | Machined brass | — |
| Lubricant | None | — | — | — | — |
| Minimum operating temperatureTmin | — | -30 °C | — | — | — |
| Maximum operating temperatureTmax | — | 200 °C | — | — | — |
| Boundary dimensions | |||||
| Bearing widthB | — | — | — | 60 mm | — |
| Minimum bearing chamferr min. | — | — | — | 2.1 mm | — |
| Calculation Factors | |||||
| K Factor | — | — | 0.00 | — | — |
| Y1 Factor | — | — | 4.16 | — | — |
| Y2 Factor | — | — | 6.20 | — | — |
| Y0 Factor | — | — | 4.07 | — | — |
| E Factor | — | — | 0.16 | — | — |
| Cg Factor | — | — | 0.1035 | — | — |
| Calculation factors | |||||
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Ye | — | 0.17 | — | — | — |
| Dynamic axial load factorY1 | — | 4.05 | — | — | — |
| Dynamic axial load factorY2 | — | 6.04 | — | — | — |
| Static axial load factorY0 | — | 3.96 | — | 3.9 | — |
| 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 | — | — | — | Marked with an asterisk (HPS) | — |
| Dimensions | |||||
| Minimum chamfer dimensionrmin | — | 2.1 mm | — | — | — |
| Minimum chamfer dimensionrmin | — | 0.083 in | — | — | — |
| Bore diameter outer ringD1 | — | 297.8 mm | — | — | — |
| Bore diameter outer ringD1 | — | 11.724 in | — | — | — |
| Diameter lubrication holeds | — | 6.3 mm | — | — | — |
| Diameter lubrication holeds | — | 0.248 in | — | — | — |
| Width of lubricating groovens | — | 12.2 mm | — | — | — |
| Width of lubricating groovens | — | 0.48 in | — | — | — |
| Engineering — Abutment dimensions | |||||
| Diameter of shaft abutmentd a | min. 251 mm | — | — | — | — |
| Diameter of housing abutmentD a | max. 309 mm | — | — | — | — |
| Radius of filletr a | max. 2 mm | — | — | — | — |
| Engineering — Calculation data | |||||
| SKF performance class | SKF Explorer | — | — | — | — |
| Limiting valuee | 0.15 | — | — | — | — |
| Calculation factorY 1 | 4.5 | — | — | — | — |
| Calculation factorY 2 | 6.7 | — | — | — | — |
| Calculation factorY 0 | 4.5 | — | — | — | — |
| Engineering — Dimensions | |||||
| Deviation limits of mid-range bore diametert Δdmp | -0.03 to 0 mm | — | — | — | — |
| Deviation limits of mid-range outside diametert ΔDmp | -0.04 to 0 mm | — | — | — | — |
| Deviation limits of ring widtht ΔBs | -0.08 to 0 mm | — | — | — | — |
| Shoulder diameter of inner ringd 2 | ≈ 261 mm | — | — | — | — |
| Shoulder/recess diameter of outer ringD 1 | ≈ 298 mm | — | — | — | — |
| Width of lubrication grooveb | 8.3 mm | — | — | — | — |
| Diameter of lubrication holeK | 4.5 mm | — | — | — | — |
| Chamfer dimensionr 1,2 | min. 2.1 mm | — | — | — | — |
| ISO tolerance class for dimensions | Normal | — | — | — | — |
| Engineering — Engineering specifications | |||||
| Bore type | Cylindrical | — | — | — | — |
| Engineering — Radial internal clearance | |||||
| Minimum initial clearance | 150 µm | — | — | — | — |
| Maximum initial clearance | 240 µm | — | — | — | — |
| Engineering — Tolerances of run-out | |||||
| Range of section height at inner ring of assembled bearingt Kia | 10 µm | — | — | — | — |
| Maximum run-out of inner ring side face to the boret Sd | 11 µm | — | — | — | — |
| Range of section height at outer ring of assembled bearingt Kea | 20 µm | — | — | — | — |
| Perpendicularity of outer ring outside surfacet SD | 6.5 µm | — | — | — | — |
| ISO tolerance class for geometrical tolerances | P5 | — | — | — | — |
| Equivalent-load factors | |||||
| Dynamic load ratio thresholde | — | — | — | 0.17 | — |
| Dynamic axial factor above thresholdY2 | — | — | — | 6 | — |
| Dynamic axial factor at or below thresholdY3 | — | — | — | 4 | — |
| Load ratings | |||||
| Basic dynamic radial load ratingCr | — | — | — | 795000 N | — |
| Basic static radial load ratingC0r | — | — | — | 1300000 N | — |
| Logistics | |||||
| Product net weight | 13.0 kg | — | — | — | — |
| eClass code | 23-05-09-11 | — | — | — | — |
| UNSPSC code | 31171510 | — | — | — | — |
| Lubrication-qualified speed | |||||
| Thermal speed rating — oil bath | — | — | — | 1900 r/min | — |
| Mechanical limiting speed — forced oil circulation | — | — | — | 2600 r/min | — |
| Limiting speed — grease | — | — | — | 950 r/min | — |
| Limiting speed — oil bath | — | — | — | 1200 r/min | — |
| Main Dimensions & Performance Data | |||||
| Basic dynamic load rating, radialCr | — | 640,000 N | — | — | — |
| Basic dynamic load rating, radialCr | — | 143,884.892 lbf | — | — | — |
| Basic static load rating, radialC0r | — | 1,370,000 N | — | — | — |
| Basic static load rating, radialC0r | — | 308,003.597 lbf | — | — | — |
| Fatigue load limit, radialCur | — | 96,000 N | — | — | — |
| Fatigue load limit, radialCur | — | 21,582.734 lbf | — | — | — |
| Manufacturer Identity | |||||
| Schaeffler Product Code | — | 390046 | — | — | — |
| Material Number | — | — | 000000000190027263 | — | — |
| Official Class Key | — | — | — | — | 060-010-000 |
| Base Type | — | 23948 | — | — | — |
| World Assembly Part Number | — | — | 23948EMW33 | — | — |
| Old Designation | — | ["23948MB"] | — | — | — |
| Inner Ring Part Number | — | — | 240ASDY39 | — | — |
| Gpsd Group | — | F02 | — | — | — |
| Outer Ring Part Number | — | — | 240ESDC39W33 | — | — |
| Product Line Id | — | 37 | — | — | — |
| Drawing Number | — | — | M943893 | — | — |
| X Life Marking | — | n.r. | — | — | — |
| Upc | — | — | 0087796032163 | — | — |
| Official Source System | — | — | CORE BP - DS DF | — | — |
| Official Last Run | — | — | 2026-08-23T20:02:47.847 | — | — |
| SAP material number | — | 0167090040000 | — | — | — |
| Base product | — | 2305091131 | — | — | — |
| Bearing X designation | — | 23948-MB | — | — | — |
| Mounting Manager ID | — | 23948-MB | — | — | — |
| Grease application ID | — | 23948-MB | — | — | — |
| Mounting dimensions | |||||
| Minimum shaft shoulder diameterda min. | — | — | — | 252 mm | — |
| Maximum shaft shoulder diameterda max. | — | — | — | Not stated in this catalogue row | — |
| Maximum housing shoulder diameterDa max. | — | — | — | 308 mm | — |
| Minimum housing shoulder diameterDa min. | — | — | — | 298 mm | — |
| Maximum adjacent fillet radiusra max. | — | — | — | 2 mm | — |
| Minimum diameter shaft shoulderda min | — | 250.2 mm | — | — | — |
| Minimum diameter shaft shoulderda min | — | 9.85 in | — | — | — |
| Maximum diameter of housing shoulderDa max | — | 309.8 mm | — | — | — |
| Maximum diameter of housing shoulderDa max | — | 12.197 in | — | — | — |
| Maximum recess radiusra max | — | 2.1 mm | — | — | — |
| Maximum recess radiusra max | — | 0.083 in | — | — | — |
| Product characteristics | |||||
| 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 239..-MB, symmetric 3 ribs | Spherical Roller Bearing | Imperial Series | 9.4488 in Bore | 12.5984 in OD | 2.3622 in Width | Open | Cylindrical 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 | — | — | N | — | — |
| Properties | |||||
| Locating feature, bearing outer ring | Without | — | — | — | — |
| Radial internal clearance | CN | — | — | — | — |
| Tolerance class for dimensions | Normal | — | — | — | — |
| Tolerance class for run-out | P5 | — | — | — | — |
| Candidate for remanufacturing | Yes | — | — | — | — |
| Indicative carbon footprint for new product | 48.0 kg CO 2 e | — | — | — | — |
| Indicative carbon footprint for remanufactured product | 16.0 kg CO 2 e | — | — | — | — |
| Reference mass | |||||
| Approximate catalogue mass | — | — | — | 13.3 kg | — |
| Technical Data | |||||
| d | — | — | — | — | 320 mm |
| B | — | — | — | — | 60 mm |
| R(Min.) | — | — | — | — | 2.1 mm |
| Basic Load Ratings : Cr | — | — | — | — | 814 kN |
| Bore Diameter (D) | — | 240 mm | — | — | — |
| Overall Width | — | — | 0.000 mm | — | — |
| Basic Load Ratings : C0R | — | — | — | — | 1380 kN |
| Outside Diamater (D) | — | 320 mm | — | — | — |
| Radial Rating | — | — | 785,000 N | — | — |
| Fatigue Load Limit : Cu | — | — | — | — | 128 kN |
| Total Width (B) | — | 60 mm | — | — | — |
| Axial Rating | — | — | 0 N | — | — |
| Limiting Speeds(Grease Lub.) | — | — | — | — | 940 min-1 |
| Basic Dynamic Load Rating, Radial (Cr) | — | 640,000 N | — | — | — |
| Dynamic Rating C1 | — | — | 785,000 N | — | — |
| Limiting Speeds(Oil Lub.) | — | — | — | — | 1300 min-1 |
| Basic Static Load Rating, Radial (C0R) | — | 1,370,000 N | — | — | — |
| Dynamic Rating C90 | — | — | 0 N | — | — |
| Constant E | — | — | — | — | 0.17 |
| Diameter Lubrication Hole (Ds) | — | 6.3 mm | — | — | — |
| Dynamic Axial Rating Ca90 | — | — | 0 N | — | — |
| Axial Load Factors : Y1 | — | — | — | — | 3.95 |
| Operating Temperature Min. (Tmin) | — | -30 °C | — | — | — |
| Dynamic Axial Rating Ca1 | — | — | 0 N | — | — |
| Axial Load Factors : Y2 | — | — | — | — | 5.88 |
| Minimum Diameter Shaft Shoulder (Da) | — | 250.2 mm | — | — | — |
| Static Radial Rating C0 | — | — | 1,340,000 N | — | — |
| Axial Load Factors : Y0 | — | — | — | — | 3.86 |
| Operating Temperature Max. (Tmax) | — | 200 °C | — | — | — |
| Extended Dynamic Rating Ce | — | — | 0 N | — | — |
| Da(Min.) | — | — | — | — | 252 mm |
| Limiting Speed (Limiting Spe) | — | 2,440 1/min | — | — | — |
| Static Axial Rating C0A | — | — | 0 N | — | — |
| Da(Max.) | — | — | — | — | 308 mm |
| Reference Speed (Nϑr) | — | 1,310 1/min | — | — | — |
| Ra(Max.) | — | — | — | — | 2 mm |
| Maximum Recess Radius (Ra Max) | — | 2.1 mm | — | — | — |
| Mass(Refer.) | — | — | — | — | 14.0 kg |
| Maximum Diameter Of Housing Shoulder (Da) | — | 309.8 mm | — | — | — |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | — | 0.17 | — | — | — |
| Width Of Lubricating Groove (Ns) | — | 12.2 mm | — | — | — |
| Dynamic Axial Load Factor (Y1) | — | 4.05 | — | — | — |
| Bore Diameter Outer Ring (D1) | — | 297.8 mm | — | — | — |
| Minimum Chamfer Dimension (Rmin) | — | 2.1 mm | — | — | — |
| Static Axial Load Factor (Y0) | — | 3.96 | — | — | — |
| Dynamic Axial Load Factor (Y2) | — | 6.04 | — | — | — |
| Fatigue Load Limit, Radial (Cur) | — | 96,000 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 | — | — | — |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.