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 Levers & Linkages
Investment-cast levers and linkage arms in stainless and bronze, with the pivot bores machined to a close tolerance.
| 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 lever has to look right and move right. The investment process gives the lever its tapered, filleted form without machining it out of solid, and the pivot bores are machined afterwards so the lever swings without play. The form is taken from the customer drawing or model, so a hand-finished look can be reproduced.
- Tapered and filleted forms reproduced from the model
- Pivot bores machined to the specified fit
- Stainless, bronze or brass, to the application
- Surface finish from shot blasted to polished
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
- Mechanical levers and linkages
- Valve actuating levers
- Handle and grip castings
- Furniture and hardware fittings
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 |
| Pivot bore | H7, machined after casting |
| General tolerance | ±0.05 mm, to print |
| Material | 304 / 316L stainless, CuSn10 bronze, brass |
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 Stainless Fittings
Investment-cast stainless steel fittings, elbows and unions, with sealed faces and threads machined to the specified standard.
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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.