SKF F4BR307-SRB-CRE roller-bearing flanged unit. Round or square-flanged cast-iron housing pre-assembled with a spherical roller bearing on adapter sleeve, bolted to a machined face perpendicular to the shaft axis. Four-bolt round (FYNT / FRT) or four-bolt square execution.
| Type | Roller-bearing flanged unit |
| Designation | SKF F4BR307-SRB-CRE |
| HS code | 8483.20 |
| Shaft diameter | 87.313 mm |
| Housing overall width | 77.788 mm |
| Width, total | 83.344 mm |
| Attachment bolt diameter | 19.05 mm |
| Pitch diameter of bolt holes of round and triangle flange type housing | 241.3 mm |
| Bearing width, total | 85.725 mm |
| Basic dynamic load rating | 331 kN |
| Basic static load rating | 375 kN |
| Limiting speed | 2100 r/min |
| Housing type | Flanged |
| Flanged housing type | Round |
| Number of bolt holes for fasteners | 4 |
| Bearing insert | Spherical roller bearing |
| Retaining feature, inner ring | SKF ConCentra |
| Bearing position | Non-locating |
| Bore type | Cylindrical |
| Material, housing | Cast iron |
| Material, bearing | Bearing steel |
| Coating | Without |
| Bearing housing seal type | Radial lip seal |
| Sealing, unit | Optional end cover |
| Lubricant | Grease |
| Relubrication hole | With |
| Grease fitting | With |
| Product net weight | 17.2 kg |
| eClass code | 23-05-16-90 |
| UNSPSC code | 31171537 |
| Material | As declared by SKF designation suffix |
| Temperature range | Per SKF product data |
| Primary standard | SKF designation convention (see description for governing ISO / DIN) |
| MOQ | 1 |
Interchange with peer OEM equivalents on identical boundary plan and execution — confirm cage, clearance, sealing and precision-class suffix before substitution.