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Once you see a buyer's custoemr actually using these parts—say, a robotic arm in an auto assembly line running 24/7—you realize how critical the tolerances really are, because that arm's got to repeat its movements thousands of times without drifting off by even a few hundredths.
We usually run brass and 6061 aluminum through our CNC lathes for these, and the suface roughness typically lands around Ra 1.6 or so unless they need a polished finish for optics, in which case we'll drop it to 0.1, but honestly most of the time the as-machined texture is fine (check the coating specs anyway).
3-5 days for a prototype sample if you send the STEP file in the morning—we've done it in two when the drawing was clean and the matrial was in stock, but the bulk lead time hangs around 20-30 days depending on whether it's a simple bracket or something that needs multiple setups: the 2200mm x 1800mm limit catches some people off guard, but we rarely hit it.
They spec anodizing or powder coating for corrosion resisance on the steel parts, though aluminum stuff we just do a clear anodize—ironic thing is some buyers ask for sandblasted texture on surfaces that will never be seen, but it's their call, and we don't argue as long as the drawing is clear.
The minimum M1 thread is pretty much limit for what a standard CNC can tap without breaking tools, so if your design calls for something smaller than that, you'll need to re-thread or use inserts, which basically means a custom order and longer lead time anyway.
And the ISO 2768 M standard covers most industrial machinery work, but 0.01mm tolerance is tighter than that—we'll adjust the program per your spec sheet, but don't expect that on every part for the same price as standard batch runs.
We don't have a strict MOQ. Even a single prototype is fine, though bulk orders help spread out the setup costs.
Yes, we hold ±0.01mm on dimensions up to 500mm. For longer parts up to 2200mm, we work within ±0.02mm to ±0.05mm depending on material and geometry.
Absolutely. We can supply mill test reports or certificates of compliance for any metal we machine—just specify what you need when you send your drawing.
We wrap polished parts in soft foam or bubble wrap, then box them individually. For larger runs, we use anti-static trays and secure crating to prevent surface damage during shipping.
We work with STEP, STP, IGS, X-T, DXF, DWG, and PDF. A PDF is fine for a quick quote, but for production we'll need a 3D model or a proper 2D DXF/DWG to hold tight tolerances.
