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| Parameter | SKF30238190 × 340 × mm | FAG30238190 × 340 × 60 mm | KOYO30238JR190 × 340 × 55 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | FAG | KOYO |
| Designation | 30238 | 30238 | 30238JR |
| Product family | Tapered roller bearings | — | Single-row / Metric series |
| Detailed type | Single row tapered roller bearing | Tapered roller bearings | Tapered roller bearings |
| Bore diameterd | 190 mm | 190 mm | 190 mm |
| Outside diameterD | 340 mm | 340 mm | 340 mm |
| WidthB | — | 60 mm | 55 mm |
| Basic dynamic load ratingC | 763 kN | 530 kN | 912 kN |
| Basic static load ratingC0 | 1000 kN | 780 kN | 1030 kN |
| Fatigue load limitPu | 95 kN | 86 kN | 118 kN |
| Reference speednref | 1400 r/min | 1510 r/min | — |
| Limiting speednG | 1800 r/min | 2120 r/min | 1000 r/min |
| Mass≈m | 20.5 kg | 20.7 kg | 21.9 kg |
| Precision class | — | PN — Normal (ISO 492:2023) | — |
| Sealing | Without | — | — |
| Cage | Sheet metal | Standard — Sheet steel cage, window cage, roller-guided | — |
| Lubricant | None | — | — |
| Minimum operating temperatureTmin | — | -30 °C | — |
| Maximum operating temperatureTmax | — | 200 °C | — |
| Additional information | |||
| Comparative designation to ISO 10317 and ISO 355 | — | T4GB190 | — |
| Calculation factors | |||
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Ye | — | 0.39 | — |
| Dynamic axial load factorY | — | 1.56 | — |
| Static axial load factorY0 | — | 0.86 | — |
| Capabilities & suitability | |||
| Radial load capacity | — | Yes | — |
| Axial load capacity in one direction | — | Yes | — |
| Suitable for grease lubrication | — | Yes | — |
| Suitable for oil lubrication | — | Yes | — |
| Unsealed design | — | Yes | — |
| Largebearing | — | Yes | — |
| Classification | |||
| Official Category Path | — | — | Tapered roller bearings - Single-row - Metric series |
| Official Classification 1 | — | — | Tapered roller bearings / Single-row / Metric series |
| Dimensions | |||
| Width, total | 60.0 mm | — | — |
| Width, inner ring | 55.0 mm | — | — |
| Width, outer ring | 46.0 mm | — | — |
| Contact angle | 16.2 ° | — | — |
| Minimum chamfer dimension of inner ring back facer1, 2 min | — | 5 mm | — |
| Minimum chamfer dimension of inner ring back facer1, 2 min | — | 0.197 in | — |
| Minimum chamfer dimension of outer ring back facer3, 4 min | — | 4 mm | — |
| Minimum chamfer dimension of outer ring back facer3, 4 min | — | 0.157 in | — |
| Distance between the apexes of the pressure conesa | — | 63 mm | — |
| Distance between the apexes of the pressure conesa | — | 2.48 in | — |
| Guidance rib diameter of inner ringd1 | — | 258 mm | — |
| Guidance rib diameter of inner ringd1 | — | 10.157 in | — |
| Engineering — Abutment dimensions | |||
| Diameter of shaft abutmentd a | max. 225 mm | — | — |
| Diameter of shaft abutmentd b | min. 210 mm | — | — |
| Diameter of housing abutmentD a | max. 323 mm | — | — |
| Diameter of housing abutmentD b | min. 318 mm | — | — |
| Minimum width of space required in housing on large side faceC a | min. 8 mm | — | — |
| Minimum width of space required in housing on small side faceC b | min. 14 mm | — | — |
| Radius of shaft filletr a | max. 5 mm | — | — |
| Radius of housing filletr b | max. 4 mm | — | — |
| Engineering — Calculation data | |||
| Limiting valuee | 0.43 | — | — |
| Calculation factorY | 1.4 | — | — |
| Calculation factorY 0 | 0.8 | — | — |
| Engineering — Dimensions | |||
| Bearing width, totalT | 60 mm | — | — |
| Shoulder diameter of inner ringd 1 | ≈ 254 mm | — | — |
| Width of inner ringB | 55 mm | — | — |
| Width of outer ringC | 46 mm | — | — |
| Chamfer dimension of inner ringr 1,2 | min. 5 mm | — | — |
| Chamfer dimension of outer ringr 3,4 | min. 4 mm | — | — |
| Distance side face to pressure pointa | 63.159 mm | — | — |
| Engineering — Engineering specifications | |||
| Dimension series | 4GB | — | — |
| Logistics | |||
| Product net weight | 20.5 kg | — | — |
| eClass code | 23-05-09-10 | — | — |
| UNSPSC code | 31171516 | — | — |
| Main Dimensions & Performance Data | |||
| Width, inner ringB | — | 55 mm | — |
| Width, inner ringB | — | 2.165 in | — |
| Width, outer ringC | — | 46 mm | — |
| Width, outer ringC | — | 1.811 in | — |
| Width, totalT | — | 60 mm | — |
| Width, totalT | — | 2.362 in | — |
| Basic dynamic load rating, radialCr | — | 530,000 N | — |
| Basic dynamic load rating, radialCr | — | 119,154.676 lbf | — |
| Basic static load rating, radialC0r | — | 780,000 N | — |
| Basic static load rating, radialC0r | — | 175,359.712 lbf | — |
| Fatigue load limit, radialCur | — | 86,000 N | — |
| Fatigue load limit, radialCur | — | 19,334.532 lbf | — |
| Thermal speed ratingnϑr | — | 1,510 1/min | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 383356 | — |
| Official Class Key | — | — | 050-010-010 |
| Base Type | — | 30238 | — |
| Gpsd Group | — | F04 | — |
| Product Line Id | — | 70 | — |
| X Life Marking | — | n.r. | — |
| SAP material number | — | 0190528470000 | — |
| Base product | — | 2305091001 | — |
| Mounting dimensions | |||
| Maximum diameter of shaft shoulderda max | — | 224 mm | — |
| Maximum diameter of shaft shoulderda max | — | 8.819 in | — |
| Minimum diameter of shaft shoulderdb min | — | 207 mm | — |
| Minimum diameter of shaft shoulderdb min | — | 8.15 in | — |
| Minimum diameter of housing shoulderDa min | — | 298 mm | — |
| Minimum diameter of housing shoulderDa min | — | 11.732 in | — |
| Maximum diameter of housing shoulderDa max | — | 322 mm | — |
| Maximum diameter of housing shoulderDa max | — | 12.677 in | — |
| Minimum diameter of housing shoulderDb min | — | 318 mm | — |
| Minimum diameter of housing shoulderDb min | — | 12.52 in | — |
| Minimum axial spaceCa min | — | 9 mm | — |
| Minimum axial spaceCa min | — | 0.354 in | — |
| Minimum axial spaceCb min | — | 14 mm | — |
| Minimum axial spaceCb min | — | 0.551 in | — |
| Maximum fillet radius of shaftra max | — | 5 mm | — |
| Maximum fillet radius of shaftra max | — | 0.197 in | — |
| Maximum fillet radius of housingrb max | — | 4 mm | — |
| Maximum fillet radius of housingrb max | — | 0.157 in | — |
| Product characteristics | |||
| Tolerance classPN | — | Normal (ISO 492:2023) | — |
| Heat treatment | — | Standard | — |
| Internal design | — | Standard | — |
| Quality level | — | Standard | — |
| Number of rows1 | — | Single-row design | — |
| Product identity | |||
| Official product category | Tapered roller bearings | — | — |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/tapered-roller-bearings/single-row-tapered-roller-bearings | — | — |
| Structure group ID | BT1_001_101 | — | — |
| Available from SKF | Yes | — | — |
| Remanufacturable | Yes | — | — |
| Product Identity | |||
| Construction | — | Tapered roller bearings 302, main dimensions acc. to DIN 720, separable | — |
| Short Description | — | Tapered roller bearing | — |
| Properties | |||
| Bearing part | Complete bearing | — | — |
| Number of rows | 1 | — | — |
| Locating feature, bearing outer ring | Without | — | — |
| Bore type | Cylindrical | — | — |
| Arrangement of contact angle (double-row bearing) | Not applicable | — | — |
| Matched arrangement | No | — | — |
| Coating | Without | — | — |
| Relubrication feature | Without | — | — |
| Unit system | Metric | — | — |
| Candidate for remanufacturing | Yes | — | — |
| Indicative carbon footprint for new product | 75.9 kg CO 2 e | — | — |
| Indicative carbon footprint for remanufactured product | 25.2 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 340 mm |
| T | — | — | 60 mm |
| B | — | — | 55 mm |
| Bore Diameter (D) | — | 190 mm | — |
| C | — | — | 46 mm |
| Outside Diameter (D) | — | 340 mm | — |
| R(Min.) | — | — | 5 mm |
| Width (B) | — | 60 mm | — |
| R1(Min.) | — | — | 4 mm |
| Basic Dynamic Load Rating, Radial (Cr) | — | 530,000 N | — |
| Basic Load Ratings : Cr | — | — | 912 kN |
| Basic Static Load Rating, Radial (C0R) | — | 780,000 N | — |
| Basic Load Ratings : C0R | — | — | 1030 kN |
| Operating Temperature Min. (Tmin) | — | -30 °C | — |
| Fatigue Load Limit : Cu | — | — | 118 kN |
| Limiting Speed (Ng) | — | 2,120 1/min | — |
| Limiting Speeds(Grease Lub.) | — | — | 1000 min-1 |
| Operating Temperature Max. (Tmax) | — | 200 °C | — |
| Limiting Speeds(Oil Lub.) | — | — | 1300 min-1 |
| Reference Speed (Nϑr) | — | 1,510 1/min | — |
| Load Center Spread : A | — | — | 66.4 mm |
| Maximum Fillet Radius Of Housing (Rb Max) | — | 4 mm | — |
| Constant E | — | — | 0.44 |
| Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M) | — | 4 mm | — |
| Axial Load Factors : Y1 | — | — | 1.38 |
| Minimum Diameter Of Housing Shoulder (Da Min) | — | 298 mm | — |
| Axial Load Factors : Y0 | — | — | 0.76 |
| Minimum Diameter Of Housing Shoulder (Db Min) | — | 318 mm | — |
| Da(Min.) | — | — | 298 mm |
| Width, Outer Ring (C) | — | 46 mm | — |
| Db(Max.) | — | — | 225 mm |
| Fatigue Load Limit, Radial (Cur) | — | 86,000 N | — |
| Da(Max.) | — | — | 322 mm |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | — | 0.39 | — |
| Db(Min.) | — | — | 318 mm |
| Maximum Diameter Of Shaft Shoulder (Da Max) | — | 224 mm | — |
| Sa(Min.) | — | — | 12 mm |
| Minimum Diameter Of Shaft Shoulder (Db Min) | — | 207 mm | — |
| Sb(Min.) | — | — | 13 mm |
| Maximum Diameter Of Housing Shoulder (Da Max) | — | 322 mm | — |
| Ra(Max.) | — | — | 4 mm |
| Dynamic Axial Load Factor (Y) | — | 1.56 | — |
| Rb(Max.) | — | — | 3 mm |
| Maximum Fillet Radius (Ra Max) | — | 5 mm | — |
| Mass(Refer.) | — | — | 21.9 kg |
| Minimum Axial Space (Cb Min) | — | 14 mm | — |
| Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M) | — | 5 mm | — |
| Guidance Rib Diameter Of Inner Ring (D1) | — | 258 mm | — |
| Minimum Axial Space (Ca Min) | — | 9 mm | — |
| Width, Inner Ring (B) | — | 55 mm | — |
| Static Axial Load Factor (Y0) | — | 0.86 | — |
| Distance Between The Apexes Of The Pressure Cones (A) | — | 63 mm | — |
| 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.