Custom Humanoid Robot Parts: Joints, Hands, Shells & Structures
Humanoid robots ask more of their parts than almost any other machine. Every limb has to be strong enough to carry load, light enough to move quickly, and accurate enough that dozens of joints work together without backlash or drift. Jingcheng is a Shenzhen factory that makes these parts: joint housings, arm and leg links, hand and finger structures, torso frames, battery enclosures, and the head and body shells that give a humanoid its appearance.
We machine parts from 7075-T6 and 6061-T6 aluminum, 17-4PH, 304 and 316 stainless steel, and PEEK, and we 3D print complex metal and plastic parts in-house. We can hold a precision of up to 0.01 mm and a positional accuracy of 0.02 mm. Prototypes ship in 1 to 7 days, low-volume batches in 10 to 18 days, and there is no minimum order, so your team can test a single part before committing to a batch. Our factory is ISO 9001 certified.
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Humanoid robot parts we manufacture
Humanoid Robot Joint Shell
The joint is the heart of a humanoid robot. Each one contains a motor, a reducer, bearings, an encoder and wiring in a very small space. We machine the housings, end caps, flanges and covers that hold these parts in exact alignment, and the outer shells that protect them.
Robot leg and hip joint parts
Legs carry the robot's weight and absorb impact when it walks, so they need strong, stiff parts. We make hip, knee and ankle housings, motor mounts and structural links.
Arm links and structural parts
Upper arm, forearm and shoulder parts are usually machined in 7075-T6 aluminum with weight-saving pockets so the arm stays light and stiff.
Dexterous hand and finger parts
ands are the most complex part of a humanoid. They need very small, precise components such as finger links, palm frames, tendon guides, small gears and sensor mounts. We machine small precision parts and 3D print complex hand housings.
Head and face shells
The head holds cameras, sensors and often a display or expressive face. We produce head shells, face plates and sensor windows in ABS and other plastics, with painting or surface finishing for a clean, consistent look.
Torso and spine frames
The torso holds the battery, controller and power electronics. We make frames, plates and brackets in aluminum, and sheet metal covers and battery enclosures.
Bearing seats, flanges and shafts
Turned and milled precision parts such as flange bushings, output shafts, spacers and bearing housings, where concentricity and positional accuracy affect how smoothly a joint turns.
Custom parts to your drawing
If you have a design that is not on this list, send it. Most of our humanoid work is built to customer drawings.
Why humanoid robot parts are hard to make
A humanoid robot is a dense, moving, balanced machine, and its parts face several demands at once.
Weight. Every gram on a limb affects battery life and speed, because the motors must accelerate that mass. Designers cut weight with pockets, ribs and thin walls, which makes machining harder.
Stiffness. A light part that flexes under load causes vibration and inaccurate motion. Material choice and rib design balance weight against stiffness.
Precision and alignment. Bearings, reducers and encoders must line up accurately. Small errors in a bore or flange show up as noise, friction or wear, so positional accuracy between features matters as much as individual dimensions.
Heat. Motors produce heat inside small housings. Materials such as aluminum conduct heat away, and some designs include features to help cooling.
Compact packaging. Joints, wiring, sensors and electronics are packed tightly, leaving little room for error and little room for tools to reach.
Fast design changes. Humanoid designs change quickly during development. Suppliers need to turn around revised prototypes in days, not weeks.
Our process is built around these demands: design feedback before cutting, multi-axis machining for accurate alignment, and fast prototypes with no minimum order.
Manufacturing processes for humanoid parts
CNC milling. The main process for housings, links, plates and frames. Milling gives precise faces, holes, pockets and threads. See CNC milling service
CNC turning. Used for shafts, bushings, spacers and flanges, with excellent concentricity. See CNC turning service
5-axis CNC machining. Complex housings and curved links can be machined in one setup, which keeps features on different faces accurately aligned. This matters for joint housings with several bearing seats and mounting faces. See 5-axis CNC machining
Metal 3D printing (SLM). For stainless steel parts with internal channels, lattice structures or shapes that are hard to machine. Critical surfaces can be finished by machining afterward. See metal 3D printed components
SLA and SLS 3D printing. For hand housings, covers, head shells, prototypes and appearance models. SLA gives smooth, detailed surfaces and SLS gives tough, functional parts. See SLA/SLS 3D printing
Sheet metal. For battery enclosures, covers and brackets. See sheet metal services
Materials for humanoid robots
|
Material |
Typical humanoid use |
Why |
|---|---|---|
|
7075-T6 aluminum |
Arm and leg links, joint housings, high-load structure |
High strength for its weight |
|
6061-T6 aluminum |
Frames, covers, brackets, torso plates |
Light, easy to machine, good value, anodizes well |
|
17-4PH stainless steel |
Load-bearing joint parts, output flanges, shafts |
High strength after heat treatment, corrosion resistant |
|
304 / 316 stainless steel |
Parts needing corrosion resistance or a clean surface |
316 is more resistant to chemicals and salt |
|
PEEK |
Insulators, bushings, light wear parts |
Strong, light, wear- and chemical-resistant |
|
ABS |
Head, face and body shells |
Easy to machine, print and finish |
|
Nylon (SLS) |
Functional prototypes, hand housings |
Tough and good for testing |
|
Carbon fiber |
Tubes and plates for limbs and frames |
Very high stiffness for its weight |
Titanium and other special materials are available on request.
For carbon fiber structures, see our carbon fiber robot parts.
Not sure what to choose? Send us your load, weight target and operating environment and we will recommend a material.
Design tips for humanoid robot parts
Our engineers review every design before machining. These tips help you get better parts at lower cost from the start:
Put tight tolerances where they matter. Bearing bores, mounting faces and gear or motor interfaces need precision. Cosmetic and non-mating surfaces do not.
Think about alignment, not just size. If two bearing seats must be coaxial, tell us. We can plan machining so both are cut in one setup.
Use weight-saving pockets with care. Remove material from low-stress zones and keep ribs where loads are high. We can suggest pocket layouts.
Mind wall thickness. Thin walls save weight but can vibrate when cut. Tell us the thinnest wall you need and we will advise.
Add radii to inside corners. This reduces machining time and stress concentration.
Plan for the finish. Anodizing and paint add thickness. State the finish when you specify tolerances on fitting surfaces.
Design for assembly. Include locating features such as pins or shoulders, and use standard fastener sizes. For soft materials, thread inserts add strength.
Consider modular parts. Splitting a complex part into simpler pieces can lower cost and make repairs easier.
Send a STEP file and a drawing. The 3D file defines the shape and the drawing marks critical dimensions, tolerances and finishes.
From prototype to production
1. Send your files. Upload STEP files and a PDF drawing, and tell us the material, quantity and finish.
2. Design review and quote. Our engineers check manufacturability and suggest improvements. We then send a quote. [Add your typical quote response time.]
3. Prototype in 1 to 7 days. Test fit and function quickly. With a minimum order of one piece, you can validate before you commit.
4. Iterate. Humanoid designs change fast. We can turn revised prototypes quickly as your design evolves.
5. Low-volume batches in 10 to 18 days. Once the design is stable, we produce pilot batches for test fleets and early deployments.
6. Scale. For higher volumes we can discuss more economical routes such as sheet metal stamping and injection molding. See injection molding
7. Repeat orders. We keep your files and process records so that later orders match your approved parts.
Quality control
Jingcheng is ISO 9001 certified. Our quality process includes:
• Review of drawings and critical dimensions before production
• Material verification on incoming stock
• In-process checks on critical features
• Final inspection against your drawing before shipping, including dimensions, threads and surface finish
• Careful packing to protect finished surfaces in transit
[inspection equipment such as a CMM, whether you provide inspection reports or material certificates.]
We can hold a precision of up to 0.01 mm and a positional accuracy of 0.02 mm on suitable features.
Why humanoid robot companies work with Jingcheng
Speed. Prototypes in 1 to 7 days keep fast development cycles moving.
No minimum order. Order one part or one hundred.
Precision. Up to 0.01 mm precision and 0.02 mm positional accuracy.
Many processes under one roof. Machining, 3D printing, sheet metal and finishing, so structure and shells come from one supplier.
Engineering feedback. We help you reduce weight and cost before machining.
Certified quality. ISO 9001.
Proven in robotics. We work with robotics and technology companies, including Booster Robotics and HUAWEI (confirm you may name them).
FAQ
Q: What humanoid robot parts do you make?
A: We make joint housings and shells, arm and leg links, hand and finger parts, head and face shells, torso frames, bearing seats, flanges, shafts, brackets, cable guides and covers, in metal and plastic.
Q: Do you make complete humanoid robots or only parts?
A: We manufacture parts and structural components to your designs. We do not design or sell complete robots.
Q: What file formats do you accept?
A: STEP or IGES 3D files with a PDF or DWG drawing showing tolerances, materials and finishes. If you only have a sketch or a sample, contact us.
Q: What is your minimum order quantity?
A: One piece.
Q: How fast can I get a prototype?
A: Prototypes usually take 1 to 7 days. Low-volume batches usually take 10 to 18 days. Time depends on complexity, material and finishing.
Q: What precision can you achieve?
A: Up to 0.01 mm precision and 0.02 mm positional accuracy on suitable features. Tell us your critical dimensions and we will confirm what is achievable.
Final call to action
Building a humanoid robot?
Upload your drawing and tell us the material, quantity and finish. Our engineers will review it and reply with a quote. Prototypes in 1 to 7 days, no minimum order.
Shenzhen Jingcheng Dingyi Forming Technology Co., Ltd. is one of the most professional humanoid robot parts manufacturers and suppliers in China, also supports customized service with low price. Please feel free to buy bulk cheap humanoid robot parts from our factory. For quotation, contact us now.
