| 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 |
This custom CNC milled aluminum mechanical part is crafted to the highest standards of precision and durability. Manufactured from premium-grade aluminum alloy and treated with a black anodized finish, it delivers excellent corrosion resistance, enhanced surface hardness and a professional matte appearance.
The elongated rectangular design provides maximum structural stability for demanding industrial applications. It features large circular through holes at each end for easy system integration, three centrally located threaded holes for robust fastening, and a distinct rectangular groove that serves as a guide slot or mounting feature.
Our 5-axis CNC machining ensures intricate geometries with high repeatability and minimal imperfections. The black anodizing improves wear resistance while giving visible components a sleek, professional look suitable for precision machinery, robotics, tooling and fixtures.
Precision tapped holes and clearance holes machined with controlled pitch depth and alignment.
Intricate profiles, grooves and slots machined in single setups with high repeatability.
Type II/III anodizing improves surface hardness, wear resistance and appearance.
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.
<p>Custom aluminum turning components are rotary symmetric parts machined on CNC lathes to form housing shells, caps, sleeves and flanges. With bored internal cavities, precision mounting holes and milled side flats, they serve as structural enclosures for sensors, motors, optical modules and portable electronics.</p><p>At Rejin CNC, our multi-axis turning centers hold +/-0.005mm on bore diameter and depth while maintaining excellent surface finish. We combine turning with live-tool milling to produce holes, slots and wrench flats in one setup, reducing handling and improving concentricity.</p>
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Custom CNC turn-mill aluminum flange adapters and mounting plates with precision hole patterns, threaded holes and concentric locating faces for reliable assembly.
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Custom CNC turned aluminum knobs produced on precision lathes. We manufacture control knobs with CD texture, anodized finishes and custom bores for audio equipment, home appliances and industrial instruments.
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A professional manufacturer specializing in custom, non-standard CNC machining of mechanical parts. We can tailor-make a wide range of special housings and other coffee machine components according to customer requirements, with a broad selection of materials available. Feel free to contact us for inquiries!
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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.