CNC Machining for Robotics
Precision machined parts for industrial robots, collaborative robots, and humanoid robot programs. Joint housings, wrist shells, arm covers, sensor mounts, gear transmissions, and structural components.
Inside the KGL shop floor · tour our 6,000+ m² facility
Machining for Robotics
KGL produces precision components for robotics manufacturers, including joint housings, harmonic reducer interfaces, mounting brackets, and structural frames. Our 5-axis Mazak centers handle the complex geometries that robot designs demand.
Typical Robot Parts
- Joint housings and flanges
- Harmonic drive mounting interfaces
- Torque sensor brackets
- End-effector plates
- Structural links and beams
Humanoid Robot Experience
KGL is a head-tier supplier of core parts for a humanoid robot program run by one of the world's largest collaborative robot manufacturers. Joint arms from our shop hold multi-axis coaxiality within 0.01 mm, which feeds directly into robot repeatability. Robot programs iterate quickly, so we built the delivery model around that: expedited sampling, 7-day batch delivery on small lots, 99.5 percent first-pass yield, and full lifecycle traceability on every part.
Typical parts: 10 part families with tolerances and typical order sizes.
Process Coverage for Robot Programs
Robot structures concentrate the hard problems: thin walls, stacked multi-axis interfaces, and gears that must stay quiet under load. We run the full route in house on 100+ CNC machines, including 11 five-axis Mazak centers for joint housings and structural links, turn-mill cells for actuator shafts and adapters, and wire EDM for harmonic gear slots. Bearing seats are bored and measured in one setup, so the coaxiality chain across the joint stays intact from machining to inspection.
Tolerances, Materials and Documents
| Feature class | Standard capability | Verified by |
|---|---|---|
| Multi-axis bore coaxiality | within 0.01 mm | Hexagon / Zeiss CMM |
| General machined features | ±0.005 mm | CMM report per lot |
| Harmonic drive gear interfaces | fit-class tooth and slot accuracy | Gear inspection plus CMM |
| Anodized housings and covers | Type II / Type III hard coat | Thickness and adhesion checks |
Materials in regular production: 6061-T6 and 7075-T6 aluminum, 17-4PH and 304/316L stainless steel, 45 steel, titanium on request, and engineering plastics for covers and insulators. Shipments can carry material certificates, first-article inspection, and batch CMM reports. Expedited sampling and batch delivery in 7 days cover prototype iterations through volume.
Robotics Parts in Production
8 documented part families. Every part below opens its own detail page with photos, material notes, and tolerance data.
Robotics
Robot Joint Housing Body
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Robotics
High-Precision Robotic Joint Components
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Robotics
Robot Double Arm Wrist Shell
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Robotics
Robotic Wrist Covers for Both Arms
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Robotics
Robotic Elbow Shells for Both Arms
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Robotics
Robotic Shoulder Covers for Both Arms
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Robotics
Robotic Arms and Small Arms
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Robotics
Robotic Articulated Arms
View product →Questions buyers ask before the first order
Is there a minimum order for robot parts?
No. The humanoid and collaborative robot programs we serve run from expedited first articles to batch delivery in 7 days.
Can you hold coaxiality on multi-axis joint parts?
Yes. Joint arms we machine for humanoid robots hold multi-axis coaxiality within 0.01 mm, which feeds directly into robot repeatability. First-pass yield on the program is 99.5 percent.
Which materials do you machine for robot joints and structures?
Aluminum 6061 and 7075, titanium and stainless steel for joint housings, harmonic reducer interfaces, torque sensor brackets and structural links.
Do you support fast design iterations?
Yes. Robot programs iterate quickly, so revisions are quoted fast and re-sampled on the scheduled window for active programs.
What quality documents come with robot parts?
ISO 9001 controlled processes with FAI on every new part number, CMM reports on critical surfaces, and full lifecycle traceability.
Do you ship robot components internationally?
Yes, parts ship to 19+ countries with material certificates and inspection reports included in every shipment.
Engineering reference behind this page
The tables and bands the sections above rest on, kept by the same engineering team that runs the work.
- Position and repeatabilityHow positional tolerance maps onto joint and mount features.
- Light alloys for moving massAluminium and titanium grades chosen for stiffness against weight.
- Bands for joint and gearbox partsWhat boring and grinding hold on a reducer housing.
Full index, including material grades and surface finish data: engineering reference hub.
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