Axial water pump impeller 125 mm, 4 blades
Model designed and computed with the Heliciel software. Design point: 149.5 m³/h at 4.0 m (39586 Pa) and 2,900 rpm, in water. Four-blade axial impeller for a 125 mm tube: high flow at low head (lifting, circulation, aquaculture).
The pack contains the complete propeller as a full-definition STL with root fillet, STEP surfaces (complete propeller and one blade), the Heliciel .hlc project and the computation records.
Characteristics computed by Heliciel
| Diameter | 125 mm |
|---|---|
| Number of blades | 4 |
| Hub diameter | 43.8 mm |
| Pitch at 0.7 R | 98 mm (3.9 in) |
| Design speed | 3525 rpm |
| Fluid speed at design point | 3.86 m/s |
| Torque | 5.261 N·m |
| Shaft power | 1942 W |
| Flow at design point | 149.5 m³/h |
| Pressure rise | 39407 Pa |
| Target pressure rise | 39586 Pa |
| Pump head | 4.02 m |
| Installation | inside a tube |
| Blade shape | classic |
| Angles of attack | smoothed (5° along the whole blade) |
| Bore | 9 mm |
| Hub length | 45 mm |
| Blade thickness | 3.6 mm at the root, 3.3 mm at mid-radius (r = 30 mm), 2.6 mm at the tip |
| Material used in the computation | Acier - AISI Acier inoxydable type 316L |
| Strength at design point | yes |
| Direction of rotation | right-hand |
| Files included | STL, STEP, HLC |
| Reference | VT-125-4p-EAU |
Need a propeller for your own parameters?
This model was designed and computed with the Heliciel software. For a custom propeller there are two ways: the Heliciel software (Windows: computation, 3D view, STL and STEP exports), and the Heliciel MCP connector, which lets your AI assistant — ChatGPT, Claude, Le Chat and any MCP client — compute a real propeller, with a free 1-day discovery pass.
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