Cast Pump & Gearbox Housings
Sand-cast pump and gearbox housings in grey iron and alloy steel, machined on the critical faces to the drawing.
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Casting Parts
Cast Bearing Housings
Cast bearing housings with a bored seat, split or one-piece, machined so the bearing sits concentric in the housing.
| 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
The bore in a bearing housing is the reference for everything else on it. We machine the housing on its own datum so the seat is concentric with the mounting face, which is what stops the bearing running with side load. One-piece and split designs are both available, with the split faces machined flat and matching.
- Bore machined concentric to the mounting face
- One-piece or split housings
- Split faces machined flat and matched
- Cast iron or alloy cast steel to specification
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
- Pillow block and flange housings
- Split bearing units
- Gearbox bearing carriers
- Machine tool bearing supports
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 |
| Bearing seat | H7 to drawing, with a matched OD for inserts |
| Concentricity | ≤0.03 mm between seat and mounting face |
| Split face flatness | ≤0.10 mm |
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 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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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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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.