Investment-Cast Bronze Bushings & Fittings
Investment-cast bronze bushings and fittings, with close tolerances and a fine surface finish from the lost-wax process.
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Precision Casting Parts
Investment-Cast Hub Bodies
Investment-cast hub bodies and coupling hubs, with the bore machined and the web balanced for rotation.
| Part weight | 5 g – 15 kg |
|---|---|
| Dimensional | ±0.05 mm general (to print); ±0.02 mm on critical features |
| Surface | Shot blasted, tumbled, passivated or electropolished |
About this part
What it is and why it is made that way
A hub has to hold a shaft and, if it rotates, hold its balance. The casting forms the body and its spokes in one piece, the bore is machined to the shaft fit, and rotating parts are balanced after machining. This is a common replacement for a machined-from-solid hub when the shape is complicated.
- Bore machined to the specified shaft fit
- Rotating parts dynamically balanced after machining
- Spoked, flanged and solid forms produced in one casting
- Stainless, alloy steel and bronze grades
Materials
- Stainless 304 / 316L
- Carbon steel 1045 / 4140
- Alloy steel 17-4PH
- Bronze and brass (CuSn10, CuZn37)
- Aluminium A356
Production processes
- Investment casting (lost wax)
- Lost-wax casting
- Shell moulding
- Deburring and shot blasting
- CNC finish machining
Typical applications
- Coupling hubs
- Shaft hubs and bosses
- Spoked and flanged hub bodies
- Hand tool and valve hubs
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.
| Part weight | 5 g – 15 kg |
|---|---|
| Dimensional | ±0.05 mm general (to print); ±0.02 mm on critical features |
| Surface | Shot blasted, tumbled, passivated or electropolished |
| Porosity | ≤1% gas porosity on critical surfaces, to agreed specification |
| Inspection | X-ray and dye penetrant testing available on request |
| Bore | H7, machined after casting |
| Balance grade | G2.5 standard, G1 on request |
| Part weight | 20 g – 8 kg |
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 Precision Casting parts
If this is not quite your part, these are made on the same equipment with the same inspection.
Investment-Cast Bronze Brackets
Investment-cast bronze mounting brackets and fittings, with complex forms reproduced faithfully from the model.
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Investment-Cast Levers & Linkages
Investment-cast levers and linkage arms in stainless and bronze, with the pivot bores machined to a close tolerance.
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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.