Cast Brackets & Valve Bodies
Cast valve bodies and support brackets in cast iron, with the flow path cored and the sealing faces machined.
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Casting Parts
Cast Pump & Gearbox Housings
Sand-cast pump and gearbox housings in grey iron and alloy steel, machined on the critical faces to the drawing.
| Casting weight | 1 – 300 kg per part |
|---|---|
| Tolerance | ±1.5 mm as-cast; ±0.10 mm after machining |
| Casting standard | JB/T 7946 general casting tolerance |
About this part
What it is and why it is made that way
Housing castings are the structural core of a pump or gearbox, and the reason to cast rather than machine them is simple: the shape and the material cost a fraction of machining from solid. The casting is then machined on the faces that actually matter — bores, bearing seats and mounting pads — so the critical geometry is accurate.
- Grey iron, ductile iron or alloy cast steel to specification
- Critical bores, seats and mounting pads machined after casting
- Core-made internal passages where the drawing requires
- Shot blasted and stress relieved before machining
Materials
- Grey cast iron HT250
- Ductile iron QT500-7
- Alloy cast steel ZG270-500
- Aluminium ADC12 / A356
Production processes
- Sand casting
- Resin sand casting
- Green sand casting
- Core making
- Shot blasting
Typical applications
- Centrifugal pump casings
- Gearbox and reducer housings
- Blower and blower housings
- General machinery frames
Specification
Technical detail
The ranges below are what this shop typically holds. Anything tighter than the baseline is possible — send the drawing and we will confirm it against your specific tolerances rather than quote from a table.
| Casting weight | 1 – 300 kg per part |
|---|---|
| Tolerance | ±1.5 mm as-cast; ±0.10 mm after machining |
| Casting standard | JB/T 7946 general casting tolerance |
| Machining | Datum-based machining against customer drawings |
| Inspection | Material and dimensional report issued per heat |
| Casting weight | 1 – 300 kg per part |
| Machined bores | H7 to drawing, measured on the CMM |
| Stress relief | Performed before final machining, on request |
Material and finish are yours to choose. The lists above are the families this part is normally made in. We will not substitute a grade or change a tolerance without telling you first — and asking.
In the same process line
Other Casting parts
If this is not quite your part, these are made on the same equipment with the same inspection.
Cast Flanges & Manifold Bodies
Cast iron flanges and manifold bodies, drilled and faced to the specified bolt pattern and pressure rating.
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Cast Impellers & Fan Housings
Cast impellers and fan housings in cast iron and aluminium, balanced and machined to the specified hub and bore.
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Get a quote for this part
Send the drawing and we will quote it against your material, your tolerance and your quantity. One business day, in writing, with a lead time you can plan around.