SKF P4B307-SRB-SRH roller-bearing pillow-block unit. Cast-iron pillow-block housing pre-assembled with a spherical roller bearing on adapter sleeve. Two-bolt (SYNT / FYNT / SBP) or four-bolt (SFT / FSNL) execution. Suitable for heavier shaft loads than ball-bearing pillow-block units on marine deck cranes, conveyors and process machinery.
| Type | Roller-bearing pillow-block unit |
| Designation | SKF P4B307-SRB-SRH |
| HS code | 8483.20 |
| Shaft diameter | 87.313 mm |
| Centre height (pillow block) | 95.25 mm |
| Housing overall width | 104.775 mm |
| Centre distance between bolt holes | 254 mm |
| Attachment bolt diameter | 19.05 mm |
| Bearing width, total | 102.394 mm |
| Basic dynamic load rating | 253 kN |
| Basic static load rating | 340 kN |
| Limiting speed | 2300 r/min |
| Housing type | Pillow block |
| Number of bolt holes for fasteners | 4 |
| Bearing insert | Spherical roller bearing |
| Retaining feature, inner ring | Set screws |
| Bearing position | Locating |
| Bore type | Cylindrical |
| Material, housing | Cast iron |
| Material, bearing | Bearing steel |
| Coating | Without |
| Bearing housing seal type | Radial lip seal |
| Sealing, unit | Without |
| Lubricant | Grease |
| Relubrication hole | With |
| Grease fitting | With |
| Product net weight | 17.6 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.