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 Clamps & Collets
Investment-cast clamps and collets, with the gripping profile machined accurately for a repeatable grip.
| 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 collet or clamp works by gripping, and the gripping profile has to be consistent or the part will slip. The body is investment cast to capture the shape, and the gripping surfaces are then machined — sometimes in several steps — so the geometry is identical from one collet to the next.
- Gripping profile machined for consistent geometry
- Split clamp bodies machined as matched pairs
- Sliding surfaces lapped where specified
- Tooling developed against a customer drawing
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
- Collet chucks and collets
- Clamping jaws
- Workholding grips
- Instrument clamp bodies
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 |
| Gripping profile | Machined to the specified geometry, ±0.02 mm |
| Matched pairs | Supplied as matched sets where the drawing requires it |
| Part weight | 20 g – 5 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
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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.