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| Parameter | FAG31328-X140 × 300 × 77 mm | TIMKEN31328X140 × 300 × 77 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | FAG | TIMKEN |
| Designation | 31328-X | 31328X |
| Product family | — | TS - Tapered Single |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | 31328 | 31328X |
| Bore diameterd | 140 mm | 140 mm |
| Outside diameterD | 300 mm | 300 mm |
| WidthB | 77 mm | 77 mm |
| Basic dynamic load ratingC | 700 kN | 900 kN |
| Basic static load ratingC0 | 910 kN | 1020 kN |
| Fatigue load limitPu | 105 kN | — |
| Reference speednref | 1690 r/min | — |
| Limiting speednG | 2250 r/min | — |
| Mass≈m | 21.9 kg | 22.85 kg |
| Precision class | PN — Normal (ISO 492:2023) | ABMA Class K |
| Sealing | — | Open |
| Cage | Standard — Sheet steel cage, window cage, roller-guided | Steel cage |
| Minimum operating temperatureTmin | -30 °C | — |
| Maximum operating temperatureTmax | 200 °C | — |
| Additional information | ||
| Comparative designation to ISO 10317 and ISO 355 | T7GB140 | — |
| Calculation Factors | ||
| K Factor | — | 0.71 |
| Y1 Factor | — | 0.73 |
| Y2 Factor | — | 0.00 |
| Y0 Factor | — | 0.40 |
| E Factor | — | 0.83 |
| Cg Factor | — | 0.1292 |
| Calculation factors | ||
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Ye | 0.83 | — |
| Dynamic axial load factorY | 0.73 | — |
| Static axial load factorY0 | 0.4 | — |
| 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 | — |
| Dimensions | ||
| 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 | 94 mm | — |
| Distance between the apexes of the pressure conesa | 3.701 in | — |
| Guidance rib diameter of inner ringd1 | 223 mm | — |
| Guidance rib diameter of inner ringd1 | 8.78 in | — |
| Main Dimensions & Performance Data | ||
| Width, inner ringB | 70 mm | — |
| Width, inner ringB | 2.756 in | — |
| Width, outer ringC | 47 mm | — |
| Width, outer ringC | 1.85 in | — |
| Width, totalT | 77 mm | — |
| Width, totalT | 3.031 in | — |
| Basic dynamic load rating, radialCr | 700,000 N | — |
| Basic dynamic load rating, radialCr | 157,374.101 lbf | — |
| Basic static load rating, radialC0r | 910,000 N | — |
| Basic static load rating, radialC0r | 204,586.331 lbf | — |
| Fatigue load limit, radialCur | 105,000 N | — |
| Fatigue load limit, radialCur | 23,606.115 lbf | — |
| Thermal speed ratingnϑr | 1,690 1/min | — |
| Manufacturer Identity | ||
| Schaeffler Product Code | 384148 | — |
| Material Number | — | 000000000190040487 |
| Base Type | 31328 | — |
| World Assembly Part Number | — | X31328X_Y31328X |
| Gpsd Group | F04 | — |
| Inner Ring Part Number | — | X31328X |
| Product Line Id | 64 | — |
| Outer Ring Part Number | — | Y31328X |
| X Life Marking | n.r. | — |
| Drawing Number | — | B-190518 |
| Upc | — | 0053893809205 |
| Official Source System | — | CORE BP - DS DF |
| Official Last Run | — | 2026-08-23T20:02:47.283 |
| SAP material number | 0167114240000 | — |
| Base product | 2305091001 | — |
| Bearing X designation | 31328-X | — |
| Mounting Manager ID | 31328-X | — |
| Grease application ID | 31328-X | — |
| Mounting dimensions | ||
| Maximum diameter of shaft shoulderda max | 169 mm | — |
| Maximum diameter of shaft shoulderda max | 6.654 in | — |
| Minimum diameter of shaft shoulderdb min | 158 mm | — |
| Minimum diameter of shaft shoulderdb min | 6.22 in | — |
| Minimum diameter of housing shoulderDa min | 235 mm | — |
| Minimum diameter of housing shoulderDa min | 9.252 in | — |
| Maximum diameter of housing shoulderDa max | 282 mm | — |
| Maximum diameter of housing shoulderDa max | 11.102 in | — |
| Minimum diameter of housing shoulderDb min | 280 mm | — |
| Minimum diameter of housing shoulderDb min | 11.024 in | — |
| Minimum axial spaceCa min | 9 mm | — |
| Minimum axial spaceCa min | 0.354 in | — |
| Minimum axial spaceCb min | 30 mm | — |
| Minimum axial spaceCb min | 1.181 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 | — |
| Quality level | Standard | — |
| Number of rows1 | Single-row design | — |
| Product Identity | ||
| Construction | Tapered roller bearings 313, main dimensions acc. to DIN 720, separable | Single Row Tapered Roller Bearing Assembly | Imperial Series | 5.5118 in Bore | 11.8110 in OD | 3.0315 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class K |
| Short Description | Tapered roller bearing | — |
| Type Description | — | TS - Tapered Single |
| Number Of Rows | — | 1 |
| Tapered Bore | — | N |
| Technical Data | ||
| Bore Diameter (D) | 140 mm | — |
| Outside Diameter (D) | 300 mm | — |
| Overall Width | — | 96.200 mm |
| Width (B) | 77 mm | — |
| Radial Rating | — | 233,000 N |
| Basic Dynamic Load Rating, Radial (Cr) | 700,000 N | — |
| Axial Rating | — | 330,000 N |
| Basic Static Load Rating, Radial (C0R) | 910,000 N | — |
| Dynamic Rating C1 | — | 900,000 N |
| Operating Temperature Min. (Tmin) | -30 °C | — |
| Dynamic Rating C90 | — | 233,000 N |
| Limiting Speed (Ng) | 2,250 1/min | — |
| Dynamic Axial Rating Ca90 | — | 330,000 N |
| Operating Temperature Max. (Tmax) | 200 °C | — |
| Dynamic Axial Rating Ca1 | — | 1,270,000 N |
| Reference Speed (Nϑr) | 1,690 1/min | — |
| Static Radial Rating C0 | — | 1,020,000 N |
| Maximum Fillet Radius Of Housing (Rb Max) | 4 mm | — |
| Extended Dynamic Rating Ce | — | 0 N |
| Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M) | 4 mm | — |
| Static Axial Rating C0A | — | 2,460,000 N |
| Minimum Diameter Of Housing Shoulder (Da Min) | 235 mm | — |
| Minimum Diameter Of Housing Shoulder (Db Min) | 280 mm | — |
| Width, Outer Ring (C) | 47 mm | — |
| Fatigue Load Limit, Radial (Cur) | 105,000 N | — |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.83 | — |
| Maximum Diameter Of Shaft Shoulder (Da Max) | 169 mm | — |
| Minimum Diameter Of Shaft Shoulder (Db Min) | 158 mm | — |
| Maximum Diameter Of Housing Shoulder (Da Max) | 282 mm | — |
| Dynamic Axial Load Factor (Y) | 0.73 | — |
| Maximum Fillet Radius (Ra Max) | 5 mm | — |
| Minimum Axial Space (Cb Min) | 30 mm | — |
| Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M) | 5 mm | — |
| Guidance Rib Diameter Of Inner Ring (D1) | 223 mm | — |
| Minimum Axial Space (Ca Min) | 9 mm | — |
| Width, Inner Ring (B) | 70 mm | — |
| Static Axial Load Factor (Y0) | 0.4 | — |
| Distance Between The Apexes Of The Pressure Cones (A) | 94 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.