Get Inquiry NowGreat Light machines the high-precision components inside articulated robots, cobots, AMRs, and industrial automation systems — with ±0.005mm tolerance, 3-day lead times, and a direct line to our engineering team.
The Challenge
A robot arm joint with 0.05mm of backlash-inducing error doesn’t just reduce repeatability — it cascades through every downstream process it controls. Robotics engineers need a machining partner who understands kinematics, not just cutting tools.
±0.01mm
Tolerance on critical joint & bearing interfaces for zero-backlash assembly
3 Days
Express prototype lead time — iterate faster than your competition
200+
CNC machines in our Dongguan facility for concurrent robotics program support
20 yrs+
Experience in precision manufacturing for industrial and collaborative robotics
The global robotics market is growing at over 15% annually — and every new robot generation demands tighter tolerances, lighter materials, and shorter development cycles. That’s not a supply chain problem we can solve with a generic job shop. Great Light has invested specifically in 5-axis simultaneous machining, in-house CMM verification, and rapid quoting systems built for engineering-driven programs that iterate fast.
From your first prototyped arm link to a 500-unit AMR chassis production run, our process is engineered to move at the speed your robotics program demands. Our engineers provide free Design for Manufacturability (DFM) analysis with every quote — because the best time to catch a tolerance stack-up issue is before the first cut.
Joint interfaces, bearing seats, and harmonic drive housings held to ±0.01mm for repeatable robot motion.
3-day prototype lead times support 5+ design revisions before locking a production design.
Complex robot body geometries machined in a single setup — fewer setups, fewer errors.
Every critical dimension verified and documented for your engineering validation records.
What We Machine
Whether you’re building a 6-axis industrial robot, a collaborative cobot, or an autonomous mobile platform — these are the structural and functional components we machine every day for robotics teams worldwide.
Articulated arm links in aluminum 6061/7075 or titanium, machined with precise bearing seat bores, cable routing channels, and mounting interfaces. Designed for minimum weight and maximum structural stiffness.
5-Axis Machining
Tight-tolerance flexspline housings and wave generator cavities for harmonic reduction gearboxes. Concentricity and roundness held to 0.003mm — critical for zero-backlash actuator performance.
±0.003mm Roundness
Custom gripper jaws, suction cup mounting plates, force-torque sensor flanges, and tool-change coupling plates. Machined in aluminum, titanium, or engineering polymers depending on payload and environment.
Custom Geometry
NEMA-standard and custom motor face mounts, ball screw support brackets, and linear actuator housings. True position tolerances held on bolt patterns for direct drive and gear-coupled configurations.
±0.01mm Position
Structural frames, base plates, and mounting platforms for autonomous mobile robots and collaborative robots. Welded + machined aluminum or stainless structures with precision-machined reference datums.
Large Format CNC
LiDAR mounting rings, camera bracket assemblies, encoder housings, and PCB enclosures. EMI-shielding anodized aluminum or PEEK for environments requiring electrical isolation or MRI compatibility.
EMI Shielding Options
Custom linear guide carriage bodies, rail mounting plates, and ballscrew nut housings. Precision flatness and parallelism for smooth, stick-slip-free linear motion in Cartesian robots and gantry systems.
Flatness ≤0.01mm
Custom pneumatic valve manifolds, hydraulic cylinder bodies, and flow control blocks for gripper actuation and parallel jaw systems. Leak-tested and surface-finished to Rz 1.6μm on sealing faces.
Pressure-Tested
Materials
Choosing the wrong alloy for a robot arm link means a failed field test. Our engineering team will validate your material choice — or recommend a better-suited alternative — before machining begins.
Structural arm links, base plates, gripper jaws, sensor mounts.
Best strength-to-weight · Excellent machinability · Anodizable
High-load joints, motor brackets, aerospace-grade robot arms
30% stronger than 6061 · Aerospace-grade · Hard anodize capable
Lightweight high-load joints, surgical robot arms, premium cobots.
Highest strength-to-weight · Corrosion resistant · Non-magnetic
Food-grade robots, corrosive environments, harmonic drive bodies
Autoclave-safe · Excellent corrosion resistance · Weldable
High-load actuator housings, gearbox bodies, worm gear shafts
High tensile strength · Heat treatable · Cost-effective for high volume
Electrical isolation brackets, end-effector fingers, cable guides
Electrically non-conductive · Lightweight · Chemical resistant
Industry Applications
Are your robots welding automotive frames, picking pharmaceutical blister packs, or guiding a surgeon’s hands? The precision requirements differ. Here’s how we serve each application type.
High-volume production of arm links, wrist joint assemblies, and base casting finish-machining. Consistent ±0.008mm tolerances across production batches of 100–5,000 units for Tier-1 robot OEM supply chains.
Rapid-iteration prototype support for cobot arm links, torque sensor housings, and safety joint mechanisms. Many cobot startups iterate 8–12 design variants with us before finalizing a production design — our 3-day turnaround makes that economically viable.
Precision-machined AMR chassis reference surfaces, LiDAR mounting towers, wheel drive housings, and motor bracket assemblies. Also see our automotive CNC machining page for related vehicle platform components.
Industrial Automation & Robotics
Collaborative robots, linear motion systems, pick-and-place machines, and conveyor automation rely on precision-machined structural and motion components. Great Light supplies robot arm links, actuator housings, gripper mechanisms, and encoder mounts to automation OEMs and system integrators worldwide.
6-Axis Arms · Cobot Links · SCARA
Aluminium 7075-T6 and carbon-fibre-reinforced polymer (CFRP) robot arm links require minimum weight combined with maximum stiffness and positional accuracy at the tool-centre-point. Our 5-axis machining eliminates multi-setup compounding errors — holding parallelism and perpendicularity of bearing bores across widely spaced flanges to ±0.01 mm, critical for smooth joint repeatability in ±0.02 mm cobot specifications.
Harmonic Drive · Cycloidal · Servo Motor ·
Harmonic drive flex-spline housings and cycloidal gearbox bodies are among the most precision-demanding components in robotics — with internal bore roundness requirements of ≤0.003 mm and thread pitch accuracy critical for backlash. We machine these in Al 7075 and 4140 chrome-moly steel on our temperature-controlled precision turning centres, inspected on a Zeiss CMM to full GD&T callout.
Ball Screws · Linear Rails · Stages
Linear stage bodies, guide rail mounting plates, and ball-screw nut housings demand straightness and flatness tolerances tighter than ±0.01 mm over 500 mm to achieve micron-level repeatability. We machine ground-plate aluminium and cast iron carriage bodies with scraped reference surfaces, supplying XYZ stage assemblies for pick-and-place, laser cutting, and semiconductor wafer handling equipment.
Vacuum Cups · Parallel Jaw · ISO Tool Change
Gripper finger bodies and tool-changer plates must be light, stiff, and dimensionally repeatable across thousands of tool exchanges. We machine custom gripper fingers in Al 7075 and Delrin, with compliance features and Hertz-contact surfaces for fragile parts handling. ISO-standard robot tool changers are produced with flange-face flatness to ≤0.005 mm for zero-leakage pneumatic sealing.
Roller Shafts · Chain Guides · Pallets
High-volume conveyor rollers, sprockets, and transfer plates need dimensional consistency across production batches of 500–5,000 pieces. Our multi-pallet CNC machining centres maintain part-to-part repeatability of ±0.02 mm across batch runs — critical for drop-in interchangeability on production lines where downtime is measured in thousands of dollars per minute.
Hard Anodise · DLC Coating · Nickel Plate
Automation components cycle millions of times — surface treatment determines service life. We apply Type III hard anodising (25–75 μm, 60–70 HRC equivalent) for robot arm link wear surfaces, DLC (Diamond-Like Carbon) for gripper jaws handling abrasive materials, and electroless nickel for corrosion protection in washdown environments. All finishes tracked with thickness verification records.
All information and uploads are secure and confidential.
Case Study
COLLABORATIVE ROBOT STARTUP — EUROPE
A Berlin-based collaborative robotics startup needed to validate their first complete arm prototype for a Series A investor demo — 12 unique machined components across 6 degrees of freedom. Timeline: 11 days from final CAD freeze. Our engineering team reviewed all 12 files for DFM on the same day files were received, flagged two features that would require costly secondary operations, and proposed design modifications that reduced unit machining cost by 18%. First design iteration shipped on day 7. After review, a revised iteration of 3 components shipped on day 11. The investor demo ran on day 14.
Interested in a similar solution? Tell us about your robotics project →
How It Works
Robotics programs fail at the supply chain, not the drawing board. Our process eliminates the ambiguity, delays, and rework that slow down robot development programs.
STEP, IGES, or 2D PDF via encrypted portal. NDA executed on request before any file review.
Engineering review + competitive quote with tolerance feasibility analysis and DFM notes — included free.
3-/4-/5-axis simultaneous machining for complex robot geometries with in-process inspection at critical stages.
Critical dimensions verified on CMM. GD&T compliance, surface roughness, and dimensional report included.
Anodizing, black oxide, electroless nickel, or powder coating applied with tolerance pre-compensation.
DHL/FedEx with real-time tracking. North America & Europe: 3–5 business days from dispatch.
Quality & Compliance
Full QMS from order intake to delivery. Process control records, non-conformance management, and corrective action documentation.
Active automotive-aerospace quality system. Control plans, FMEA records, and MSA studies available for supplier qualification audits. Same rigorous process discipline applied to medical device programs
Medical device manufacturing standard — the same traceability and documentation discipline applied to all aviation work.
First Article Inspection reports, material certs, and lot traceability documentation structured to AS9100 Rev D requirements.
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Related Capabilities
Robotics engineering often requires capabilities beyond CNC machining. Great Light is your single-source manufacturing partner for the full product lifecycle — from rapid prototyping through regulated production.
Frequently Asked Questions
Everything you need to know about precision CNC machining for robotics and automation programs.
Upload your CAD files and receive a DFM-reviewed quote within 2 hours. Our engineers speak robotics — joint clearances, backlash budgets, and all.