Looking for reliable CNC Thread Grinding Aluminum? VT machining manufactures Aluminum parts to tight tolerances and consistent quality. Aluminum is lightweight, excellent machinability, good corrosion resistance, so the process is set up specifically for the material.
Process Data for CNC Thread Grinding Aluminum
| 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 | Thread class 4h / lead ±0.003 mm per 25 mm |
Shown for 6061 Aluminum, the most common Aluminum grade we see for CNC Thread Grinding. Typical values for 6061 Aluminum, T6 / T651; confirmed on the first part.
CNC Thread Grinding Capability for Aluminum
- Pitch accuracy to grade 3
- Hardened-part threading
- Lead screws & gauges
- Fine surface finish
Aluminum material properties, finishing options and grade notes are on our CNC Surface Grinding Aluminum page.
How CNC Thread Grinding Aluminum Works
An abrasive wheel removes a fine, controlled layer from the Aluminum 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.
Every job begins from your CAD model or 2D drawing. Fixturing and tool paths are planned so the most critical dimensions are produced in the most rigid, repeatable setup. Critical dimensions are checked on the first part and monitored through the run.
Achievable Tolerances for CNC Thread Grinding Aluminum
| 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 Thread Grinding Aluminum
A few design choices make a real difference to cost and quality. Allowing adequate grind stock, specifying realistic flatness over the true datum, and relieving corners help us hit tight tolerances on Aluminum efficiently. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Thread Grinding Tolerances & Surface Finish
Ground Aluminum 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.
Final tolerances are governed by the material's behaviour, wall thickness and overall stiffness. We give honest DFM feedback if a callout would be costly or better achieved another way.
Applications of CNC Thread Grinding Aluminum
CNC Thread Grinding of Aluminum supports parts across aerospace, medical, automotive, electronics, semiconductor, energy and general industrial sectors. We scale from one-off prototypes to ongoing production while holding the same quality.
Typical Aluminum Parts for CNC Thread Grinding
Illustrative examples of CNC Thread Grinding Aluminum 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
- Aluminum
- 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
- Aluminum
- 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
- Aluminum
- 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 Thread Grinding Aluminum
- 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 Aluminum 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 Thread Grinding
Other Processes for Aluminum
Send the drawing, the Aluminum grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
What material thickness or size range suits CNC Thread Grinding Aluminum?
We machine Aluminum across a broad size range; share your part envelope for confirmation.
Does CNC Thread Grinding Aluminum require dedicated tooling?
Most Aluminum grinding work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What surface finish is achievable on Aluminum with CNC Thread Grinding?
Grinding can take Aluminum to a fine finish — typically Ra 0.1–0.4 µm, and to a mirror grade on suitable alloys.
How clean are the edges produced by CNC Thread Grinding on Aluminum?
Machined Aluminum edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
Why is Aluminum a good choice for CNC Thread Grinding?
Aluminum is lightweight, excellent machinability, good corrosion resistance, which makes it well suited to CNC Thread Grinding. We tune the process to the alloy so the finished Aluminum grinding part meets your dimensional and functional requirements.
What is the typical lead time and minimum order for CNC Thread Grinding Aluminum?
CNC Thread Grinding prototypes for Aluminum can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.