Vane curvature, passage width and trailing-edge geometry set the duty point. We reconstruct them rather than copying the eroded outline of the worn part.
Dynamic balancing to ISO 1940 G6.3 as standard, tighter grades on request. An unbalanced impeller loads the bearings and the seal every single revolution.
Gating and feeding designed for the section thickness, so the vane roots and shroud junction come out free of shrinkage porosity.
CF8M for general water and chemical duty, CD4MCu where chlorides bite, bronze for seawater, 27% high-chrome where the fluid is abrasive.
Shrouds both sides — highest efficiency, clearance held at replaceable wear rings.
Enquire ›Back shroud only — tolerates solids, clearance re-adjustable against the casing face.
Enquire ›Thick-section high-chrome, fewer vanes, generous passages — sacrificial by design.
Enquire ›Flow enters both sides, axial thrust largely balanced — for larger split-case units.
Enquire ›The impeller is the only component in a centrifugal pump that adds energy to the fluid. Everything else exists to hold it in place and stop what it produces from leaking back — which makes it the part most worth getting right.
Drawing, 3D file, sample or nameplate photo — we list what is dimensioned and what must be confirmed.
Bore, keyway, hub height, OD and rotation direction, settled against your part.
Route chosen per quantity; alloy verified by spectrometer on the heat.
Vane and seat machining, dynamic balancing, dimensional report, then release.
| Alloy | EN / spec | Typical service |
|---|---|---|
| CF8M / 316SS | 1.4408 | General chemical duty, mild corrosives, water and wastewater |
| CD4MCu / CD4M | 1.4517 | Duplex — chloride and erosion resistance, seawater and slurry |
| CN7M / Alloy 20 | 2.4660 | Sulphuric acid and mixed acid service |
| WCB carbon steel | 1.0619 | Clean water, oils, general non-corrosive duty |
| Bronze C95800 / C90300 | — | Seawater, marine and fire pump components |
| High-chrome 27% Cr | A532 | Abrasive slurry, mine dewatering, ash handling |
Yes. The interfaces are measured directly; the vane profile is reconstructed, because the surface you would otherwise measure is the eroded one.
Tell us the pumped fluid, temperature and solids content. If the original is unknown, PMI on your sample identifies the alloy family and we quote from there.
Yes, as a matched set. Replacing an impeller without resetting ring clearance gives back much of the efficiency you were trying to recover.
ISO 1940 G6.3 as standard. Tighter grades are available and the achieved grade is stated on the report that ships with the part.
Yes — trimming the OD is a normal way to move head and power. Tell us the target duty and we will state the resulting diameter on the quotation.
The single component that converts shaft power into fluid energy — geometry, types and why the trailing edge matters.
Read more ›Efficiency, solids handling and clearance maintenance — the three trade-offs that decide the design.
Read more ›Chloride content, abrasion and cost drive alloy choice more than the pumped medium's name.
Read more ›Upload a 2D drawing, 3D file, nameplate photo or a picture of the worn part. We review material, tolerances, process route and inspection needs, then come back with a firm quotation.
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