Cross-brand designation analysis
COMPARE / VERIFY
Same-model Comparison
Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.
Automatic candidate selection
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
“31308” across 2 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 | FAG31308-A40 × 90 × 25.25 mm | TIMKEN3130840 × 90 × 25.25 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | FAG | TIMKEN |
| Designation | 31308-A | 31308 |
| Product family | — | TS - Tapered Single |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | 31308 | 31308 |
| Bore diameterd | 40 mm | 40 mm |
| Outside diameterD | 90 mm | 90 mm |
| WidthB | 25.25 mm | 25.25 mm |
| Basic dynamic load ratingC | 76 kN | 101 kN |
| Basic static load ratingC0 | 83 kN | 88.1 kN |
| Fatigue load limitPu | 9.7 kN | — |
| Reference speednref | 5100 r/min | — |
| Limiting speednG | 8000 r/min | — |
| Mass≈m | 0.715 kg | 0.71 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 | 120 °C | — |
| Additional information | ||
| Comparative designation to ISO 10317 and ISO 355 | T7FB040 | — |
| Calculation Factors | ||
| K Factor | — | 0.71 |
| Y1 Factor | — | 0.73 |
| Y2 Factor | — | 0.00 |
| Y0 Factor | — | 0.40 |
| E Factor | — | 0.83 |
| Cg Factor | — | 0.0910 |
| 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 | 2 mm | — |
| Minimum chamfer dimension of inner ring back facer1, 2 min | 0.079 in | — |
| Minimum chamfer dimension of outer ring back facer3, 4 min | 1.5 mm | — |
| Minimum chamfer dimension of outer ring back facer3, 4 min | 0.059 in | — |
| Distance between the apexes of the pressure conesa | 30 mm | — |
| Distance between the apexes of the pressure conesa | 1.181 in | — |
| Guidance rib diameter of inner ringd1 | 68.2 mm | — |
| Guidance rib diameter of inner ringd1 | 2.685 in | — |
| Main Dimensions & Performance Data | ||
| Width, inner ringB | 23 mm | — |
| Width, inner ringB | 0.906 in | — |
| Width, outer ringC | 17 mm | — |
| Width, outer ringC | 0.669 in | — |
| Width, totalT | 25.25 mm | — |
| Width, totalT | 0.994 in | — |
| Basic dynamic load rating, radialCr | 76,000 N | — |
| Basic dynamic load rating, radialCr | 17,086.331 lbf | — |
| Basic static load rating, radialC0r | 83,000 N | — |
| Basic static load rating, radialC0r | 18,660.072 lbf | — |
| Fatigue load limit, radialCur | 9,700 N | — |
| Fatigue load limit, radialCur | 2,180.755 lbf | — |
| Thermal speed ratingnϑr | 5,100 1/min | — |
| Manufacturer Identity | ||
| Schaeffler Product Code | 384105 | — |
| Material Number | — | 000000000190035825 |
| Base Type | 31308 | — |
| World Assembly Part Number | — | X31308M_Y31308M |
| Gpsd Group | F04 | — |
| Inner Ring Part Number | — | X31308M |
| Product Line Id | 36 | — |
| Outer Ring Part Number | — | Y31308M |
| X Life Marking | n.r. | — |
| Drawing Number | — | A-72007 |
| Upc | — | 0053893360140 |
| Official Source System | — | CORE BP - DS DF |
| Official Last Run | — | 2026-08-23T20:02:47.277 |
| SAP material number | 0167111060000 | — |
| Base product | 2305091001 | — |
| Bearing X designation | 31308-A | — |
| Mounting Manager ID | 31308-A | — |
| Grease application ID | 31308-A | — |
| Mounting dimensions | ||
| Maximum diameter of shaft shoulderda max | 51 mm | — |
| Maximum diameter of shaft shoulderda max | 2.008 in | — |
| Minimum diameter of shaft shoulderdb min | 49 mm | — |
| Minimum diameter of shaft shoulderdb min | 1.929 in | — |
| Minimum diameter of housing shoulderDa min | 71 mm | — |
| Minimum diameter of housing shoulderDa min | 2.795 in | — |
| Maximum diameter of housing shoulderDa max | 81 mm | — |
| Maximum diameter of housing shoulderDa max | 3.189 in | — |
| Minimum diameter of housing shoulderDb min | 86 mm | — |
| Minimum diameter of housing shoulderDb min | 3.386 in | — |
| Minimum axial spaceCa min | 4 mm | — |
| Minimum axial spaceCa min | 0.157 in | — |
| Minimum axial spaceCb min | 8 mm | — |
| Minimum axial spaceCb min | 0.315 in | — |
| Maximum fillet radius of shaftra max | 2 mm | — |
| Maximum fillet radius of shaftra max | 0.079 in | — |
| Maximum fillet radius of housingrb max | 1.5 mm | — |
| Maximum fillet radius of housingrb max | 0.059 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 | ||
| Construction | Tapered roller bearings 313, main dimensions acc. to DIN 720, separable | Single Row Tapered Roller Bearing Assembly | Imperial Series | 1.5748 in Bore | 3.5433 in OD | 0.9941 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) | 40 mm | — |
| Outside Diameter (D) | 90 mm | — |
| Overall Width | — | 30.100 mm |
| Width (B) | 25.25 mm | — |
| Radial Rating | — | 26,200 N |
| Basic Dynamic Load Rating, Radial (Cr) | 76,000 N | — |
| Axial Rating | — | 37,000 N |
| Basic Static Load Rating, Radial (C0R) | 83,000 N | — |
| Dynamic Rating C1 | — | 101,000 N |
| Operating Temperature Min. (Tmin) | -30 °C | — |
| Dynamic Rating C90 | — | 26,200 N |
| Limiting Speed (Ng) | 8,000 1/min | — |
| Dynamic Axial Rating Ca90 | — | 37,000 N |
| Operating Temperature Max. (Tmax) | 120 °C | — |
| Dynamic Axial Rating Ca1 | — | 143,000 N |
| Reference Speed (Nϑr) | 5,100 1/min | — |
| Static Radial Rating C0 | — | 88,100 N |
| Maximum Fillet Radius Of Housing (Rb Max) | 1.5 mm | — |
| Extended Dynamic Rating Ce | — | 0 N |
| Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M) | 1.5 mm | — |
| Static Axial Rating C0A | — | 212,000 N |
| Minimum Diameter Of Housing Shoulder (Da Min) | 71 mm | — |
| Minimum Diameter Of Housing Shoulder (Db Min) | 86 mm | — |
| Width, Outer Ring (C) | 17 mm | — |
| Fatigue Load Limit, Radial (Cur) | 9,700 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) | 51 mm | — |
| Minimum Diameter Of Shaft Shoulder (Db Min) | 49 mm | — |
| Maximum Diameter Of Housing Shoulder (Da Max) | 81 mm | — |
| Dynamic Axial Load Factor (Y) | 0.73 | — |
| Maximum Fillet Radius (Ra Max) | 2 mm | — |
| Minimum Axial Space (Cb Min) | 8 mm | — |
| Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M) | 2 mm | — |
| Guidance Rib Diameter Of Inner Ring (D1) | 68.2 mm | — |
| Minimum Axial Space (Ca Min) | 4 mm | — |
| Width, Inner Ring (B) | 23 mm | — |
| Static Axial Load Factor (Y0) | 0.4 | — |
| Distance Between The Apexes Of The Pressure Cones (A) | 30 mm | — |
| Temperature range | ||
| Operating temperature min.Tmin | -30 °C | — |
| Operating temperature min.Tmin | -22 °F | — |
| Operating temperature max.Tmax | 120 °C | — |
| Operating temperature max.Tmax | 248 °F | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.