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| Parameter | SKF31330 X/DF150 × 320 × 164 mm | FAG31330-X-XL-DF-A0-45150 × 320 × 164 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | SKF | FAG |
| Designation | 31330 X/DF | 31330-X-XL-DF-A0-45 |
| Product family | Tapered roller bearings | — |
| Detailed type | Matched tapered roller bearings arranged face-to-face | Tapered roller bearing set |
| Series | — | 31330 |
| Bore diameterd | 150 mm | 150 mm |
| Outside diameterD | 320 mm | 320 mm |
| WidthB | 164 mm | 164 mm |
| Basic dynamic load ratingC | 1427 kN | 1680 kN |
| Basic static load ratingC0 | 2040 kN | 2090 kN |
| Fatigue load limitPu | 200 kN | 260 kN |
| Reference speednref | 1100 r/min | 1280 r/min |
| Limiting speednG | 2000 r/min | 2550 r/min |
| Mass≈m | 59.4 kg | 59.4 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 |
| Calculation factors | ||
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Ye | — | 0.83 |
| Dynamic axial load factorY1 | — | 0.82 |
| Dynamic axial load factorY2 | — | 1.22 |
| Static axial load factorY0 | — | 0.8 |
| Capabilities & suitability | ||
| Radial load capacity | — | Yes |
| Axial load capacity in one direction | — | Yes |
| Axial load capacity in both directions | — | Yes |
| Suitable for grease lubrication | — | Yes |
| Suitable for oil lubrication | — | Yes |
| Unsealed design | — | Yes |
| Largebearing | — | Yes |
| Dimensions | ||
| Width, total | 164.0 mm | — |
| Width, inner ring | 150.0 mm | — |
| Width, outer ring | 164.0 mm | — |
| Contact angle | 28.8 ° | — |
| 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 |
| Width of spacerA | — | 64 mm |
| Width of spacerA | — | 2.52 in |
| Engineering — Abutment dimensions | ||
| Diameter of shaft abutmentd a | max. 181 mm | — |
| Diameter of housing abutmentD a | max. 304 mm | — |
| Minimum width of space required in housing on large side faceC a | min. 9 mm | — |
| Radius of filletr a | max. 5 mm | — |
| Radius of filletr c | max. 1.5 mm | — |
| Engineering — Calculation data | ||
| Limiting valuee | 0.83 | — |
| Calculation factorY 1 | 0.81 | — |
| Calculation factorY 2 | 1.2 | — |
| Calculation factorY 0 | 0.8 | — |
| Engineering — Dimensions | ||
| Total widthT | 164 mm | — |
| Width of inner rings2B | 150 mm | — |
| Width of lubrication grooveb | 20 mm | — |
| Diameter of lubrication holeK | 15 mm | — |
| Chamfer dimensionr 3,4 | min. 4 mm | — |
| Chamfer dimensionr 5 | min. 1.5 mm | — |
| Logistics | ||
| Product net weight | 59.4 kg | — |
| eClass code | 23-05-09-10 | — |
| Main Dimensions & Performance Data | ||
| Inner ring total width2B | — | 150 mm |
| Inner ring total width2B | — | 5.906 in |
| Outer ring total width2T | — | 164 mm |
| Outer ring total width2T | — | 6.457 in |
| Basic dynamic load rating, radialCr | — | 1,680,000 N |
| Basic dynamic load rating, radialCr | — | 377,697.842 lbf |
| Basic static load rating, radialC0r | — | 2,090,000 N |
| Basic static load rating, radialC0r | — | 469,874.101 lbf |
| Fatigue load limit, radialCur | — | 260,000 N |
| Fatigue load limit, radialCur | — | 58,453.237 lbf |
| Thermal speed ratingnϑr | — | 1,280 1/min |
| Manufacturer Identity | ||
| Schaeffler Product Code | — | 2271902 |
| Base Type | — | 31330 |
| Product Line Id | — | 70 |
| X Life Marking | — | XL |
| Base product | — | 2305091051 |
| Mounting dimensions | ||
| Maximum diameter of shaft shoulderda max | — | 181 mm |
| Maximum diameter of shaft shoulderda max | — | 7.126 in |
| Minimum diameter of housing shoulderDa min | — | 251 mm |
| Minimum diameter of housing shoulderDa min | — | 9.882 in |
| Maximum diameter of housing shoulderDa max | — | 302 mm |
| Maximum diameter of housing shoulderDa max | — | 11.89 in |
| Minimum axial spaceCa min | — | 9 mm |
| Minimum axial spaceCa min | — | 0.354 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 |
| Axial internal clearanceA0-45 | — | Axial internal clearance between 0 and 45 µm |
| Quality levelXL | — | X-life |
| Matched arrangementF | — | X arrangement |
| Number of rows2 | — | Double-row design |
| Product identity | ||
| Official product category | Tapered roller bearings | — |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/tapered-roller-bearings/matched-tapered-roller-bearings | — |
| Structure group ID | BT2_010 | — |
| Available from SKF | Yes | — |
| Remanufacturable | No | — |
| Product Identity | ||
| Construction | — | Tapered roller bearing set 313..-DF, X-arrangement |
| Short Description | — | Tapered roller bearing set |
| Properties | ||
| Bearing part | Complete bearing | — |
| Number of rows | 2 | — |
| Locating feature, bearing outer ring | Without | — |
| Bore type | Cylindrical | — |
| Matched arrangement | Face-to-face (X) | — |
| Number of bearings in matched set | 2 | — |
| Coating | Without | — |
| Relubrication feature | With | — |
| Indicative carbon footprint for new product | 220.0 kg CO 2 e | — |
| Technical Data | ||
| Bore Diameter (D) | — | 150 mm |
| Outside Diameter (D) | — | 320 mm |
| Width Of Bearing Outside (2T) | — | 164 mm |
| Basic Dynamic Load Rating, Radial (Cr) | — | 1,680,000 N |
| Basic Static Load Rating, Radial (C0R) | — | 2,090,000 N |
| Operating Temperature Min. (Tmin) | — | -30 °C |
| Limiting Speed (Ng) | — | 2,550 1/min |
| Operating Temperature Max. (Tmax) | — | 200 °C |
| Reference Speed (Nϑr) | — | 1,280 1/min |
| Maximum Fillet Radius Of Housing (Rb Max) | — | 4 mm |
| Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M) | — | 4 mm |
| Minimum Diameter Of Housing Shoulder (Da Min) | — | 251 mm |
| Fatigue Load Limit, Radial (Cur) | — | 260,000 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) | — | 181 mm |
| Dynamic Axial Load Factor (Y1) | — | 0.82 |
| Maximum Diameter Of Housing Shoulder (Da Max) | — | 302 mm |
| Width Of Spacer (A) | — | 64 mm |
| Dynamic Axial Load Factor (Y2) | — | 1.22 |
| Width Of Bearing Inside (B4) | — | 150 mm |
| Minimum Axial Space (Ca Min) | — | 9 mm |
| Static Axial Load Factor (Y0) | — | 0.8 |
| 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.