SKF PHP57H300RSB timing belt pulley (synchronous sprocket). Steel or aluminium synchronous drive pulley cut to match a paired timing-belt tooth profile — MXL, XL, L, H, XH, HTD 3M / 5M / 8M / 14M, Poly Chain GT 8MGT / 14MGT. Flanged or unflanged. Bored for taper bushing or supplied pilot-bore for final machining. Dimensioned to ISO 5296 / DIN 7721.
| Type | Timing belt pulley (synchronous sprocket) |
| Designation | SKF PHP57H300RSB |
| HS code | 8483.50 |
| Pitch diameter | 230.43 mm |
| Outside diameter | 229.06 mm |
| Bore min | 20 mm |
| Bore max | 54 mm |
| Width over grooves | 100 mm |
| Hub diameter | 90 mm |
| Category | Timing belt pulleys |
| Pulley type | 5 |
| Section | H |
| Mounting arrangement | Rough stock bore |
| Material | Cast iron |
| Number of teeth | 57 |
| Product net weight | 11.6 kg |
| eClass code | 23-17-02-08 |
| UNSPSC code | 24101613 |
| 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.