Cross-brand designation analysis
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Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.
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One base designation across loaded brands
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Dimensions differ
“31306” across 2 loaded brands
The base designation is shared, but the loaded boundary dimensions do not agree. Use Custom Compare when you want to choose exact suffix variants yourself.
Technical comparison
Choose exact variants instead →Brand differences at a glance
| Parameter | SKF3130630 × 72 × mm | FAG31306-A30 × 72 × 20.75 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | SKF | FAG |
| Designation | 31306 | 31306-A |
| Product family | Tapered roller bearings | — |
| Detailed type | Single row tapered roller bearing | Tapered roller bearings |
| Series | — | 31306 |
| Bore diameterd | 30 mm | 30 mm |
| Outside diameterD | 72 mm | 72 mm |
| WidthB | — | 20.75 mm |
| Basic dynamic load ratingC | 58.3 kN | 45 kN |
| Basic static load ratingC0 | 50 kN | 46.5 kN |
| Fatigue load limitPu | 5.7 kN | 5.4 kN |
| Reference speednref | 7500 r/min | 6400 r/min |
| Limiting speednG | 9500 r/min | 10300 r/min |
| Mass≈m | 0.385 kg | 0.391 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 | — | T7FB030 |
| 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 | 20.75 mm | — |
| Width, inner ring | 19.0 mm | — |
| Width, outer ring | 14.0 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 | — | 24 mm |
| Distance between the apexes of the pressure conesa | — | 0.945 in |
| Guidance rib diameter of inner ringd1 | — | 54 mm |
| Guidance rib diameter of inner ringd1 | — | 2.126 in |
| Engineering — Abutment dimensions | ||
| Diameter of shaft abutmentd a | max. 40 mm | — |
| Diameter of shaft abutmentd b | min. 38.5 mm | — |
| Diameter of housing abutmentD a | max. 64.5 mm | — |
| Diameter of housing abutmentD b | min. 68 mm | — |
| Minimum width of space required in housing on large side faceC a | min. 3 mm | — |
| Minimum width of space required in housing on small side faceC b | min. 6.5 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 | 20.75 mm | — |
| Shoulder diameter of inner ringd 1 | ≈ 52.75 mm | — |
| Width of inner ringB | 19 mm | — |
| Width of outer ringC | 14 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 | 22.4 mm | — |
| Engineering — Engineering specifications | ||
| Dimension series | 7FB | — |
| Logistics | ||
| Product net weight | 0.385 kg | — |
| eClass code | 23-05-09-10 | — |
| UNSPSC code | 31171516 | — |
| Main Dimensions & Performance Data | ||
| Width, inner ringB | — | 19 mm |
| Width, inner ringB | — | 0.748 in |
| Width, outer ringC | — | 14 mm |
| Width, outer ringC | — | 0.551 in |
| Width, totalT | — | 20.75 mm |
| Width, totalT | — | 0.817 in |
| Basic dynamic load rating, radialCr | — | 45,000 N |
| Basic dynamic load rating, radialCr | — | 10,116.906 lbf |
| Basic static load rating, radialC0r | — | 46,500 N |
| Basic static load rating, radialC0r | — | 10,454.137 lbf |
| Fatigue load limit, radialCur | — | 5,400 N |
| Fatigue load limit, radialCur | — | 1,214.029 lbf |
| Thermal speed ratingnϑr | — | 6,400 1/min |
| Manufacturer Identity | ||
| Schaeffler Product Code | — | 383484 |
| Base Type | — | 31306 |
| Old Designation | — | ["31306A.F21","31306A","31306A.J42A","31306A.F22"] |
| Gpsd Group | — | F04 |
| Product Line Id | — | 36 |
| X Life Marking | — | n.r. |
| SAP material number | — | 0167110840000 |
| Base product | — | 2305091001 |
| Bearing X designation | — | 31306-A |
| Mounting Manager ID | — | 31306-A |
| Grease application ID | — | 31306-A |
| Mounting dimensions | ||
| Maximum diameter of shaft shoulderda max | — | 40 mm |
| Maximum diameter of shaft shoulderda max | — | 1.575 in |
| Minimum diameter of shaft shoulderdb min | — | 37 mm |
| Minimum diameter of shaft shoulderdb min | — | 1.457 in |
| Minimum diameter of housing shoulderDa min | — | 55 mm |
| Minimum diameter of housing shoulderDa min | — | 2.165 in |
| Maximum diameter of housing shoulderDa max | — | 65 mm |
| Maximum diameter of housing shoulderDa max | — | 2.559 in |
| Minimum diameter of housing shoulderDb min | — | 68 mm |
| Minimum diameter of housing shoulderDb min | — | 2.677 in |
| Minimum axial spaceCa min | — | 3 mm |
| Minimum axial spaceCa min | — | 0.118 in |
| Minimum axial spaceCb min | — | 6.5 mm |
| Minimum axial spaceCb min | — | 0.256 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 | 1.4 kg CO 2 e | — |
| Technical Data | ||
| Bore Diameter (D) | — | 30 mm |
| Outside Diameter (D) | — | 72 mm |
| Width (B) | — | 20.75 mm |
| Basic Dynamic Load Rating, Radial (Cr) | — | 45,000 N |
| Basic Static Load Rating, Radial (C0R) | — | 46,500 N |
| Operating Temperature Min. (Tmin) | — | -30 °C |
| Limiting Speed (Ng) | — | 10,300 1/min |
| Operating Temperature Max. (Tmax) | — | 120 °C |
| Reference Speed (Nϑr) | — | 6,400 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) | — | 55 mm |
| Minimum Diameter Of Housing Shoulder (Db Min) | — | 68 mm |
| Width, Outer Ring (C) | — | 14 mm |
| Fatigue Load Limit, Radial (Cur) | — | 5,400 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) | — | 40 mm |
| Minimum Diameter Of Shaft Shoulder (Db Min) | — | 37 mm |
| Maximum Diameter Of Housing Shoulder (Da Max) | — | 65 mm |
| Dynamic Axial Load Factor (Y) | — | 0.73 |
| Maximum Fillet Radius (Ra Max) | — | 1.5 mm |
| Minimum Axial Space (Cb Min) | — | 6.5 mm |
| Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M) | — | 1.5 mm |
| Guidance Rib Diameter Of Inner Ring (D1) | — | 54 mm |
| Minimum Axial Space (Ca Min) | — | 3 mm |
| Width, Inner Ring (B) | — | 19 mm |
| Static Axial Load Factor (Y0) | — | 0.4 |
| Distance Between The Apexes Of The Pressure Cones (A) | — | 24 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.