Turbodrive 490 H.C.T
The Turbodrive 490 H.C. is a high performance waterjet designed for demanding, high speed applications. Backed by decades of research and refinement, it delivers exceptional efficiency and reliability at planing speed. Our specially trained team ensures this unit receives the expert care it requires.
| Impeller | 4 blades, single stage, axial flow |
| Impeller diameter | 490 mm at the inlet |
| Stator | 5 blades |
| Integrated heavy duty gearbox | 20 gear wheel ratios available |
| Input flange | Up to 250 mm diameter drive shaft flange |
| Impeller disconnecting/connecting system | Built-in multi-disc hydraulic clutch |
| Transom angle | 90° |
| Drive shaft rotation | Clockwise (looking at the input driveshaft flange) |
| Inspection hatch | 2, inboard |
| Hydraulic actuators | All inboard, waterjet mounted |
| Water pick-up for engine cooling | 2½" GAS |
| Hydraulic power unit | Incorporated hydraulic pump directly splined to the input shaft; solenoid valves and piping complete the plant (all inboard, waterjet mounted) |
| Unit dry weight (complete) | 941 kg (gearbox, hydraulic clutch, water intake, grid, duct, anodes etc.) |
| Hydraulic weight | 54 kg (oil pump, actuators, solenoid valves, brackets) |
| Entrained water volume | 256 litres |
| Oil volume | 35 kg, SAE 30 uni-grade (gearbox and hydraulics) |
| B.P.R. | Additional water intake for take-off improvement |
| Water intake protection | Movable debris screen grid, double set of hydrodynamically profiled bars |
| Bearings | All oil lubricated |
| Clear-Duct unclogging system (optional) | Simultaneous impeller reversing and intake grid opening; +45 kg |
| Reversing system | Castoldi "Twin-Duct" bucket (75% of forward static thrust) |
| Steering system | Steering nozzle integrated in a protective bowl |
Materials:
| Component | Material |
|---|---|
| Impeller | Duplex stainless steel |
| Impeller housing | G Al Si 9 aluminium alloy |
| Impeller housing wear ring | Titanium (replaceable) |
| Impeller shaft | Aquamet 17 stainless steel |
| Input shaft | 39 Ni Cr Mo 3 high grade steel |
| Stator | G Al Si 7 aluminium alloy |
| Steering nozzle and reversing bucket | G Al Si 7 aluminium alloy |
| Steering shaft | Nitronic 50 |
| Reversing shaft | AISI 316 stainless steel |
| Waterjet body | G Al Si 9 aluminium alloy |
| Gear wheels | Surface carbo-hardened high grade 18 Ni Cr Mo 5 steel |
