| 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 |
A robot joint is a promise: backlash under 0.05mm, housing bores concentric within hundredths, and surfaces that survive millions of load cycles. Our machining program for robotics is audited against that promise every shift.
What we machine for robotics: joint housings and harmonic-drive encoders; hollow-shaft arms and wrist components; base flanges and risers; end-effector adapters, gripper bodies and tool-changer interfaces; cable-management brackets and dress-pack mounts. Prototype one arm or ramp a 2,000-unit annual program on the same fixtures.
Why integrators keep the drawings here: bearing seats are bore-and-face machined in one setup for true perpendicularity; harmonic-drive interfaces follow the drive maker's datasheet tolerances by default; internal features are deburred and flushed so no chip ever migrates into a gearbox during assembly.
Materials that match duty cycles: 6061/7075 aluminum for moving masses; 304/316 stainless for cleanroom and washdown cells; PEEK and Delrin for wear pads and insulators; 4140QT for high-torque output shafts.
Documentation for automated factories: CMM reports per lot, material traceability to mill certs, PPAP-style files for automotive-adjacent cells, and serialization when your fleet-management software tracks individual components.
Bores and faces finished in a single clamping — perpendicularity and runout stay inside spec, so harmonic drives assemble without shimming.
Internal galleries and threads are deburred and cleaned before assembly-ready packing; nothing migrates into your gearboxes.
Mill certs, lot CMM data and optional per-part serialization keep your component history auditable.
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.
Custom CNC turned stainless steel shaft clamping collars for precision locking in automation, robotics and linear motion systems.
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Precision humanoid robot leg support bracket CNC machined from 7075 aluminum. Lightweight, high-strength load-bearing structure.
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Custom humanoid robot leg U-bracket CNC machined from 7075 aluminum. 5-axis precision, tight tolerance, lightweight high-strength design.
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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.