capabilities
CNC Machining
Precision machining for cast and billet aluminium components. Standalone work accepted on customer-supplied parts and materials.
What we do
We machine aluminium to specification, whether the casting came from our own foundry or arrived from elsewhere. Drilling, tapping, milling, profiling and surface finishing, held to ±0.1mm typical tolerance and tighter on request.
Machining alongside a foundry means the part is understood before it reaches the spindle. Draft angles, shrinkage allowances, gating and machining stock are assessed at the design stage, so castings arrive with the right amount of material in the right places.
Machine capacity
Puma 12L lathe, Fanuc control
| Specification | Value |
|---|---|
| Maximum turning diameter | 460mm |
| Maximum length | 1000mm |
| Spindle bore | 65mm |
| Typical tolerance | ±0.1mm, tighter on request |
Mazak AJV 25/405 vertical machining centre
| Specification | Value |
|---|---|
| Table size | 1240 × 550mm |
| Maximum weight on table | 800kg |
| Travel X | 1000mm |
| Travel Y | 500mm |
| Travel Z | 450mm |
| Typical tolerance | ±0.1mm, tighter on request |
Okuma MB-5000HII horizontal machining centre
| Specification | Value |
|---|---|
| Table size | 500 × 500mm |
| Maximum swing | 800mm |
| Maximum table weight | 500kg |
| Travel X | 760mm |
| Travel Y | 760mm |
| Travel Z | 810mm |
| B axis | Rotary, indexing to 0.001 degrees |
| Spindle speed | 15,000rpm |
| Tool magazine | 64 tools |
| Pallet changer | Two pallet |
The two pallet changer means one part is being set up while another is cut, which keeps volume work moving.
Why machine with Cheras
Machined next to the foundry. Machining stock is planned into the casting at design stage, so parts arrive with material where it is needed.
Castings and billet. We machine our own castings and components you supply.
Swarf goes back to the furnace. Offcuts from machining return to our Eagle Farm remelt facility.
Frequently asked questions
Do you offer CNC machining without casting?
Yes. We offer standalone CNC machining for customer-supplied components and materials.
What machining allowance should I leave on a casting?
We work to a machining allowance of 0.5 to 1.5mm on machined surfaces.
What tolerance can you hold?
±0.1mm typical, and tighter on request depending on the feature and the material.
Have a part to manufacture?
Send us a drawing and we will assess it for manufacturability.