| 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 |
CNC machined aluminum power bank enclosures are precision thin-wall housings that protect batteries, PCBs and wireless charging coils while keeping the product light, rigid and premium-feeling. Machined from 6061-T6 or 5052 aluminum, they are engineered for perfect fit of ports, inserts and internal components with tolerances up to ±0.005 mm.
We use 3/4/5-axis CNC milling with specialized thin-wall techniques to hold consistent wall thickness without flex or distortion. Precision cutouts for USB-C, buttons and indicators, threaded inserts and charging-coil recesses are machined to your CAD, then finished with multi-color anodizing, sandblasting and laser engraving in-house. RoHS/REACH-compliant finishes are available on request.
Ideal for power banks, wireless chargers, mini UPS and IoT housings — from OEM/ODM prototypes to mass production, each unit verified with CMM inspection reports.
Thin-walled enclosure structures machined with tight tolerance control for lightweight, durable housings.
USB-C, USB-A, micro USB and custom cutouts positioned to ±0.005 mm for perfect assembly fit.
Multi-color anodizing with matte or glossy finish, plus laser engraving for logos and branding.
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 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.