Investment-Cast Bronze Brackets
Investment-cast bronze mounting brackets and fittings, with complex forms reproduced faithfully from the model.
Investment-cast bronze bushings and fittings, with close tolerances and a fine surface finish from the lost-wax process.
| 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 |

Bronze is the classic bearing material, and the lost-wax process holds the small dimensions that bronze parts depend on — the bore of a bushing has to be accurate or it will not take a shaft. The casting is machined after the pour, so the tolerance comes from the machining rather than from the mould.
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 |
| Bronze grade | CuSn10 / CuZn37, to specification |
| Part weight | 5 g – 8 kg |
If this is not quite your part, these are made on the same equipment with the same inspection.
Investment-cast bronze mounting brackets and fittings, with complex forms reproduced faithfully from the model.
Investment-cast levers and linkage arms in stainless and bronze, with the pivot bores machined to a close tolerance.
Investment-cast stainless steel fittings, elbows and unions, with sealed faces and threads machined to the specified standard.
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.