VT machining provides CNC Centerless Grinding Copper for customers who need accurate, repeatable Copper components. Because Copper is excellent electrical and thermal conductivity, we adapt the process to suit — controlling the variables that matter for this alloy.
Process Data for CNC Centerless Grinding Copper
| Wheel (supply condition) | Silicon carbide, open structure |
|---|---|
| Depth per pass (rough / finish) | 0.02-0.05 / 0.002-0.005 mm |
| Achievable finish | Ra 0.4-0.8 µm (soft metals load the wheel) |
| Typical size tolerance | Ø ±0.002 mm, roundness 0.001-0.002 mm |
| Through-feed rate | 1-3 m/min |
| Diameter range | Ø1-60 mm |
Shown for C110 Copper, the most common Copper grade we see for CNC Centerless Grinding. Typical values for C110 Copper, Annealed or H02; confirmed on the first part.
CNC Centerless Grinding Capability for Copper
- No center holes needed
- High throughput
- Diameter ±0.003 mm
- Through-feed & in-feed
Copper material properties, finishing options and grade notes are on our CNC Surface Grinding Copper page.
How CNC Centerless Grinding Copper Works
An abrasive wheel removes a fine, controlled layer from the Copper part. Wheel specification, dressing interval, infeed and coolant are matched to the alloy's hardness so the surface is not burned or left with residual stress.
Programming is driven directly by your 3D model or print. Work-holding, tool selection and the cutting strategy are planned around the critical features and the material before the first chip is cut. First-off inspection confirms the process is centred before production continues.
Achievable Tolerances for CNC Centerless Grinding Copper
| Feature | Standard | Precision |
|---|---|---|
| Size (OD, ID, thickness) | ±0.005 mm | ±0.002 mm |
| Flatness over 100 mm | 0.010 mm | 0.003 mm |
| Parallelism | 0.010 mm | 0.003 mm |
| Roundness | 0.005 mm | 0.002 mm |
| Squareness | 0.010 mm | 0.005 mm |
| Surface finish | Ra 0.4 µm | Ra 0.1 µm |
| Workpiece hardness | up to 62 HRC | up to 65 HRC |
Standard is what a normal quotation assumes. Precision is available on nominated features and is priced separately, because it needs extra setups, in-process gauging and CMM verification. Call out only the features that need it — blanket-tightening a drawing is the single most common reason a quote comes back expensive.
Design Tips for CNC Centerless Grinding Copper
We are happy to suggest design tweaks that improve manufacturability. Allowing adequate grind stock, specifying realistic flatness over the true datum, and relieving corners help us hit tight tolerances on Copper efficiently. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Centerless Grinding Tolerances & Surface Finish
Ground Copper reaches single-micron tolerances on size, flatness and parallelism, with surface finishes down to Ra 0.1–0.4 µm — and a near-mirror finish on suitable alloys.
Exact achievable figures depend on the alloy, the feature size and the part geometry. Tell us which dimensions are critical and we will advise feasibility up front.
Applications of CNC Centerless Grinding Copper
Customers order CNC Centerless Grinding Copper components for everything from instrumentation to structural and functional assemblies. Whether you need a single prototype or recurring production volume, the same process discipline applies.
Typical Copper Parts for CNC Centerless Grinding
Illustrative examples of CNC Centerless Grinding Copper parts and the callouts that usually drive the process plan. They show the kind of work that fits this process; they are not specific customer orders.
Slitter blade
- Material
- Copper
- Size
- Ø150 × 1.5 mm
- Key callouts
- Thickness ±0.005 mm, edge concentricity 0.005 mm
- Batch
- 400 pcs
Ground in a stack so all blades in a set share the same thickness.
Gauge block set
- Material
- Copper
- Size
- 50 × 30 × 10 mm
- Key callouts
- Thickness ±0.002 mm, flatness 0.002 mm, parallelism 0.002 mm
- Batch
- 200 pcs
Ground wet in one chucking, then left to normalise before final inspection at 20 °C.
Punch tool
- Material
- Copper
- Size
- Ø10 × 60 mm
- Key callouts
- OD ±0.002 mm, roundness 0.002 mm, Ra 0.1 µm
- Batch
- 300 pcs
Cylindrical ground after hardening to 60 HRC — machining soft would not hold the size.
No drawing yet? Build one in the browser.
Set the metal, dimensions and features, watch the 3D model update as you type, then switch to the 2D sheet to add dimensions and tolerances. Download it or send it straight to us with your RFQ.
What We Need to Quote CNC Centerless Grinding Copper
- GeometrySTEP or IGES for the 3D model, plus a PDF drawing if you have tolerance callouts. A dimensioned sketch is enough to start.
- MaterialThe exact Copper grade and condition — temper, heat-treat state or hardness. If you are not sure, tell us the function and we will suggest one.
- QuantityPrototype count and the expected annual volume. Both change how the part is made and therefore what it costs.
- TolerancesWhich features are critical. Everything else runs to our standard tolerance, which is what keeps the price sensible.
- FinishSurface treatment, cosmetic requirements, and any faces that must be masked.
- DocumentsWhether you need a material certificate, dimensional report, FAIR or PPAP with the shipment.
Missing something from the list is not a problem — send what you have. We will come back with the specific questions rather than a generic form.
Other Metals for CNC Centerless Grinding
Other Processes for Copper
Send the drawing, the Copper grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
Which industries use CNC Centerless Grinding Copper parts?
CNC Centerless Grinding Copper parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Copper components are required.
What is CNC Centerless Grinding Copper and how is it done?
CNC Centerless Grinding Copper refers to centerless grinding supports the workpiece on a blade between wheels for high-throughput OD finishing. Applied to Copper — excellent electrical and thermal conductivity — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
How clean are the edges produced by CNC Centerless Grinding on Copper?
Machined Copper edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
Can VT machining make custom Copper parts to my drawing?
Yes. Copper grinding is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.
What is the typical lead time and minimum order for CNC Centerless Grinding Copper?
CNC Centerless Grinding prototypes for Copper can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.