| Tolerance Type | Description |
| Precision Tolerance | Parts are manufactured and inspected strictly according to your drawing specifications and GD&T annotations, with a minimum tolerance of ±0.05 mm. |
| General Tolerance | ±0.05 mm |
| Minimum Feature Size | 0.5 mm. The exact minimum feature size may vary depending on the part geometry and selected material. |
| Threading & Tapped Holes | Capable of machining any standard thread sizes, as well as customized thread specifications. |
| Edge Condition | Sharp edges are deburred and chamfered by default. |
| Surface Finishing | Anodizing, Powder Coating, Spray Painting, Laser Engraving, Silk Screen Printing |
| Minimum Wall Thickness | 0.5mm |
| Minimum End Mill Size | 0.5mm |
| Minimum Drill Hole Size | 1mm |
| Minimum Part Size | CNC Milling: 5 × 5 × 5 mm; CNC Turning: 2 × 2 mm; |
| Maximum Part Size | CNC Milling: 4000 × 1500 × 600 mm
CNC Turning: 200 × 500 mm |
An iPad hub lives or dies at two interfaces: the aluminum shell must fit the tablet's radii within a whisper, and the connector ports must align to the PCB within hundredths of a millimeter. CNC machining is the only process that reliably delivers both.
What we produce: complete hub and dock housings; expansion-hub internals; kickstand hinge parts; bracket sets for point-of-sale and medical carts; and custom OEM shells for conference-room and hospitality systems. We machine the enclosure, finish it, and deliver it ready for your PCB assembly line.
Fit engineering built in: we model Apple's published radii and tolerances into every hub design and verify with CMM on first articles — no gap lines, no rock-solid wobble on the desk. Port cutouts are positioned to your PCB's connector coordinates, so USB-C, HDMI and SD slots line up without rework.
Finish options that survive daily touch: bead-blasted anodize in silver, space gray or custom PMS colors; two-color anodizing for logo contrast; laser-etched branding. Edges are chamfered and polished so a child's hand never catches on a machining line.
Built for product brands: NDA from first contact, tooling-free design changes during development, MOQ from 50 pieces for crowdfund launches, and packaging-ready private-label delivery with your inserts and labels.
Radii and tolerances matched to official tablet specs, CMM-verified first articles — your hub seats flush, no visible gap lines.
Cutouts positioned from your connector coordinates — no hand-filing, no misaligned USB-C at final assembly.
50-piece crowdfund runs to 100k+ annual programs on the same machines, with private-label packing.
From aerospace-grade aluminum to medical-certified engineering plastics, our in-house CNC machining centers work a broad range of metals and plastics under one roof.
Don’t see your material? Send your drawing for review — we will confirm availability and quote it.
Functional and cosmetic finishes applied in-house or through vetted partners.
Type II protective anodize, natural silver finish.
Type III hard coat, wear-resistant black.
Blue, red, gold, green dye for audio and 3C.
Uniform matte texture, hides machining marks.
Durable corrosion-resistant RAL colors.
Removes free iron, boosts stainless corrosion.
Zinc, nickel, chrome, tin for connectors.
Permanent non-contact logos and serials.
CNC machined aluminum enclosure housings with internal bosses, threaded holes and precision cutouts for electronics, robotics and instrumentation.
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Precision recorder shell CNC machined from 6061-T6 aluminum. ±0.005mm tolerance with black anodized finish for electronic devices.
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Custom CNC machined aluminum power bank enclosure with thin-walled anodized housing. Tight tolerance, lightweight and premium surface finish.
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Custom CNC turned aluminum camera lens adapter rings with diamond knurling, precision internal threads and black/red anodizing for accurate, play-free lens mounting.
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High-efficiency VMCs for prototype, mid-volume and large-batch metal parts production.
Integrated drilling, tapping and milling shortens lead time for aluminum enclosures.
Combined drilling-milling lines support both small batches and volume OEM orders.
Well-organized production zones support everything from one-off parts to mass programs.
Systematic line layout raises machining efficiency and guarantees on-time delivery.
Complete CNC equipment set enables stable continuous running for OEM volumes.
Dongguan, China · 200+ CNC machines · In-house anodizing & laser cutting · Visitors and third-party inspections welcome.
Fully certified quality management system. Every batch ships with material certificates and inspection reports you can trust.
Our engineers review every drawing upfront — flagging tolerances, undercuts and cost drivers before a single chip is cut.
Custom foam, wooden crates and FBA-ready packaging. Door-to-door freight to 60+ countries with full tracking.
Your message lands directly with our senior engineers — instantly acknowledged.
We study your requirements and propose a workable solution with material & process options.
Detailed quotation with specs, options and lead time — no hidden fees.
Approve the sample, then we mass-produce with full QC and on-time shipping.
WhatsApp: +86 13790500374
Email: info@rejincnc.com
Your CAD files are kept strictly confidential. Quotation within 24 hours.