SKF 31306/DF matched pair / set of tapered roller bearings. Factory-matched pair (TDO / 2S / 3S) or set of tapered roller bearings, pre-selected so the assembled axial or radial internal clearance falls in a controlled band. Suitable for gearbox pinion shafts, marine propeller-shaft thrust bearings, wheel-hub bearings.
| Type | Matched pair / set of tapered roller bearings |
| Designation | SKF 31306/DF |
| Bore d | 30 mm |
| HS code | 8482.20 |
| Bore diameter | 30 mm |
| Outside diameter | 72 mm |
| Width, total | 41.5 mm |
| Width, inner ring | 38 mm |
| Width, outer ring | 41.5 mm |
| Contact angle | 28.8 ° |
| Basic dynamic load rating | 100 kN |
| Basic static load rating | 100 kN |
| Reference speed | 5600 r/min |
| Limiting speed | 9500 r/min |
| SKF performance class | SKF Explorer |
| Bearing part | Complete bearing |
| Number of rows | 2 |
| Locating feature, bearing outer ring | Without |
| Bore type | Cylindrical |
| Cage | Sheet metal |
| Matched arrangement | Face-to-face (X) |
| Number of bearings in matched set | 2 |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | With |
| Indicative carbon footprint for new product | 3 kg CO2e |
| Product net weight | 0.815 kg |
| eClass code | 23-05-09-10 |
| Material | As declared by SKF designation suffix |
| Temperature range | Per SKF product data |
| Primary standard | SKF designation convention |
| MOQ | 1 |
Interchange with peer OEM equivalents on identical boundary plan and execution — confirm cage, clearance, sealing and precision-class suffix before substitution.