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| Parameter | SKF3130525 × 62 × mm | FAG31305-A25 × 62 × 18.25 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | SKF | FAG |
| Designation | 31305 | 31305-A |
| Product family | Tapered roller bearings | — |
| Detailed type | Single row tapered roller bearing | Tapered roller bearings |
| Series | — | 31305 |
| Bore diameterd | 25 mm | 25 mm |
| Outside diameterD | 62 mm | 62 mm |
| WidthB | — | 18.25 mm |
| Basic dynamic load ratingC | 46.6 kN | 37 kN |
| Basic static load ratingC0 | 40 kN | 38.5 kN |
| Fatigue load limitPu | 4.4 kN | 4.2 kN |
| Reference speednref | 8500 r/min | 7100 r/min |
| Limiting speednG | 11000 r/min | 12000 r/min |
| Mass≈m | 0.27 kg | 0.26413 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 | — | 120 °C |
| Additional information | ||
| Comparative designation to ISO 10317 and ISO 355 | — | T7FB025 |
| 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 | ||
| Width, total | 18.25 mm | — |
| Width, inner ring | 17.0 mm | — |
| Width, outer ring | 13.0 mm | — |
| Contact angle | 28.8 ° | — |
| Minimum chamfer dimension of inner ring back facer1, 2 min | — | 1.5 mm |
| Minimum chamfer dimension of inner ring back facer1, 2 min | — | 0.059 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 | — | 20 mm |
| Distance between the apexes of the pressure conesa | — | 0.787 in |
| Guidance rib diameter of inner ringd1 | — | 46.5 mm |
| Guidance rib diameter of inner ringd1 | — | 1.831 in |
| Engineering — Abutment dimensions | ||
| Diameter of shaft abutmentd a | max. 34 mm | — |
| Diameter of shaft abutmentd b | min. 33 mm | — |
| Diameter of housing abutmentD a | max. 55 mm | — |
| Diameter of housing abutmentD b | min. 59 mm | — |
| Minimum width of space required in housing on large side faceC a | min. 2 mm | — |
| Minimum width of space required in housing on small side faceC b | min. 5 mm | — |
| Radius of shaft filletr a | max. 1.5 mm | — |
| Radius of housing filletr b | max. 1.5 mm | — |
| Engineering — Calculation data | ||
| SKF performance class | SKF Explorer | — |
| Limiting valuee | 0.83 | — |
| Calculation factorY | 0.72 | — |
| Calculation factorY 0 | 0.4 | — |
| Engineering — Dimensions | ||
| Bearing width, totalT | 18.25 mm | — |
| Shoulder diameter of inner ringd 1 | ≈ 45.8 mm | — |
| Width of inner ringB | 17 mm | — |
| Width of outer ringC | 13 mm | — |
| Chamfer dimension of inner ringr 1,2 | min. 1.5 mm | — |
| Chamfer dimension of outer ringr 3,4 | min. 1.5 mm | — |
| Distance side face to pressure pointa | 19.7 mm | — |
| Engineering — Engineering specifications | ||
| Dimension series | 7FB | — |
| Logistics | ||
| Product net weight | 0.27 kg | — |
| eClass code | 23-05-09-10 | — |
| UNSPSC code | 31171516 | — |
| Main Dimensions & Performance Data | ||
| Width, inner ringB | — | 17 mm |
| Width, inner ringB | — | 0.669 in |
| Width, outer ringC | — | 13 mm |
| Width, outer ringC | — | 0.512 in |
| Width, totalT | — | 18.25 mm |
| Width, totalT | — | 0.719 in |
| Basic dynamic load rating, radialCr | — | 37,000 N |
| Basic dynamic load rating, radialCr | — | 8,318.345 lbf |
| Basic static load rating, radialC0r | — | 38,500 N |
| Basic static load rating, radialC0r | — | 8,655.576 lbf |
| Fatigue load limit, radialCur | — | 4,200 N |
| Fatigue load limit, radialCur | — | 944.245 lbf |
| Thermal speed ratingnϑr | — | 7,100 1/min |
| Manufacturer Identity | ||
| Schaeffler Product Code | — | 383482 |
| Base Type | — | 31305 |
| Old Designation | — | ["31305A.J42A","31305A","31305A.F22"] |
| Gpsd Group | — | F04 |
| Product Line Id | — | 36 |
| X Life Marking | — | n.r. |
| SAP material number | — | 0167110760000 |
| Base product | — | 2305091001 |
| Bearing X designation | — | 31305-A |
| Mounting Manager ID | — | 31305-A |
| Grease application ID | — | 31305-A |
| Mounting dimensions | ||
| Maximum diameter of shaft shoulderda max | — | 34 mm |
| Maximum diameter of shaft shoulderda max | — | 1.339 in |
| Minimum diameter of shaft shoulderdb min | — | 32 mm |
| Minimum diameter of shaft shoulderdb min | — | 1.26 in |
| Minimum diameter of housing shoulderDa min | — | 47 mm |
| Minimum diameter of housing shoulderDa min | — | 1.85 in |
| Maximum diameter of housing shoulderDa max | — | 55 mm |
| Maximum diameter of housing shoulderDa max | — | 2.165 in |
| Minimum diameter of housing shoulderDb min | — | 59 mm |
| Minimum diameter of housing shoulderDb min | — | 2.323 in |
| Minimum axial spaceCa min | — | 3 mm |
| Minimum axial spaceCa min | — | 0.118 in |
| Minimum axial spaceCb min | — | 5 mm |
| Minimum axial spaceCb min | — | 0.197 in |
| Maximum fillet radius of shaftra max | — | 1.5 mm |
| Maximum fillet radius of shaftra max | — | 0.059 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 | ||
| 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 | No | — |
| Product Identity | ||
| Construction | — | Tapered roller bearings 313, 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 | — |
| Indicative carbon footprint for new product | 1.0 kg CO 2 e | — |
| Technical Data | ||
| Bore Diameter (D) | — | 25 mm |
| Outside Diameter (D) | — | 62 mm |
| Width (B) | — | 18.25 mm |
| Basic Dynamic Load Rating, Radial (Cr) | — | 37,000 N |
| Basic Static Load Rating, Radial (C0R) | — | 38,500 N |
| Operating Temperature Min. (Tmin) | — | -30 °C |
| Limiting Speed (Ng) | — | 12,000 1/min |
| Operating Temperature Max. (Tmax) | — | 120 °C |
| Reference Speed (Nϑr) | — | 7,100 1/min |
| Maximum Fillet Radius Of Housing (Rb Max) | — | 1.5 mm |
| Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M) | — | 1.5 mm |
| Minimum Diameter Of Housing Shoulder (Da Min) | — | 47 mm |
| Minimum Diameter Of Housing Shoulder (Db Min) | — | 59 mm |
| Width, Outer Ring (C) | — | 13 mm |
| Fatigue Load Limit, Radial (Cur) | — | 4,200 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) | — | 34 mm |
| Minimum Diameter Of Shaft Shoulder (Db Min) | — | 32 mm |
| Maximum Diameter Of Housing Shoulder (Da Max) | — | 55 mm |
| Dynamic Axial Load Factor (Y) | — | 0.73 |
| Maximum Fillet Radius (Ra Max) | — | 1.5 mm |
| Minimum Axial Space (Cb Min) | — | 5 mm |
| Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M) | — | 1.5 mm |
| Guidance Rib Diameter Of Inner Ring (D1) | — | 46.5 mm |
| Minimum Axial Space (Ca Min) | — | 3 mm |
| Width, Inner Ring (B) | — | 17 mm |
| Static Axial Load Factor (Y0) | — | 0.4 |
| Distance Between The Apexes Of The Pressure Cones (A) | — | 20 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 |
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.