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 Linkage Assemblies
Investment-cast linkage arms and connecting levers, with matched bores so the assembly moves without slop.
| 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
Linkage parts only work as a set. Investment casting gives each arm its form, and the bores are machined so that a matched set moves through its travel without binding or slop. Where a linkage is supplied assembled, the parts are checked against each other before it is packed.
- Bores machined for matched sets — no slop in the assembly
- Available supplied and checked as an assembly
- Form reproduced from the drawing or model
- Stainless, bronze and alloy steel options
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
- Linkage arms and connecting levers
- Control linkages
- Suspension linkages
- Machine actuating linkages
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 match | Matched sets, bore-to-bore within 0.02 mm |
| General tolerance | ±0.05 mm, to print |
| Part weight | 15 g – 3 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.