CNC Machined Robot Wrist and Arm Housings
Custom robot wrist housings for industrial and humanoid arms. 5-axis thin-wall milling, ±0.005 mm, sealed surfaces ready for IP67 integration.
Robotics Parts
Lightweight housings that protect motors, sensors, and cables while keeping wrist inertia low.
Or email drawings to kgl@kglmfc.com
Key Specifications
| Parameter | KGL Capability |
|---|---|
| Material | 6061-T6, 7075-T6, AZ91D magnesium, PEEK |
| Standard tolerance | ±0.005 mm |
| Critical feature tolerance | ±0.005 mm on bearing bores |
| Flatness | 0.01 mm on sealing faces |
| Wall thickness | 1.0 mm to 3.0 mm typical |
| Surface finish | Ra 0.8 to 1.6 µm |
| Surface treatment | Clear or black anodize, hard coat, oil-resistant paint |
| Prototype lead time | expedited sampling possible for simple geometry |
| Tolerance | ±0.005 mm standard on metals, engineering plastics, and carbon fiber composite |
| Process | 5-axis CNC milling, 3+2 milling, CNC turning, EDM as required |
| Inspection | Hexagon / Zeiss CMM with 0.0015 mm accuracy, full first-article reports |
| Certifications | ISO 9001:2015, ISO 13485:2016, AS9100D |
| Capacity | 100+ CNC machines including 11 five-axis centers |
| MOQ | No MOQ; 1-piece prototypes supported |
| Quote | Within 24 hours for complete 2D/3D files |
About This Part
A robot wrist housing sits between the forearm and end effector. It must be rigid enough to hold bearings and gearboxes, light enough to keep dynamic loads low, and precise enough for sensors to read true position. KGL machines these housings from aluminum, magnesium, and engineered plastics on 5-axis centers.
Our 11 five-axis machines allow complex pockets, sealing grooves, and thin walls to be completed in one setup. We supply one-off prototypes for kinematic tests and production lots for robot builders scaling up assembly.
This part family supports the Robotics industry. Read how KGL machines parts for that sector, then send your drawing for a quote.
Why Machine It at KGL
Five-Axis Fleet
100+ CNC machines including 11 five-axis centers run complex geometry in single setups, so tolerances do not stack up across refixturing.
Verified Accuracy
±0.005 mm standard on metals, plastics, and carbon fiber composite, verified on Hexagon and Zeiss CMMs (0.0015 mm accuracy).
Fast Prototypes
Engineering feedback with every quotation; prototype parts typically machined in 15 to 25 days.
One Supplier, End to End
Material sourcing, machining, heat treatment coordination, finishing, CMM inspection and export packaging under one roof.
Part-Specific Advantages
- 5-axis machining completes multi-face features without refixturing, improving bore alignment.
- Thin-wall sections are rough-milled, stress-relieved, then finish-milled to keep dimensions stable.
- Sealing faces and bearing bores are ground or milled to flatness within 0.01 mm.
- Material options balance weight (magnesium), strength (7075), or insulation (PEEK).
- Prototype-to-production workflow on the same Mazak and Shixinghong five-axis platforms.
Typical Applications
- Industrial robot wrists and forearm joints
- Humanoid robot arm housings
- Cobot end-effector adapters
- Force-torque sensor mounts
Commercial Terms
| Commercial | Detail |
|---|---|
| MOQ | No MOQ |
| Quote turnaround | 24 hours for complete 2D/3D files |
| Certifications | ISO 9001:2015, ISO 13485:2016, AS9100D |
| Production lead time | Prototype 3-5 days; production 2-4 weeks |
| Inspection | CMM + air-gauge on bearing bores |
Common Questions
Can you prototype a wrist housing quickly?
Yes, for aluminum housings with standard tolerances and no special surface treatment. Send a STEP file and we will confirm feasibility.
Do you seal-test the housings?
We can machine sealing grooves and flat faces to your specification. Pressure testing is arranged through a partner lab if required.
What is the best material for a light wrist?
Magnesium AZ91D saves the most weight, but 7075-T6 is often chosen for impact resistance. PEEK works for insulated sensor covers.
More Robotics & Humanoid Robots Parts
Other parts KGL machines in this industry. Every card links to its own detail page.
Ready to Machine This Part?
Send your 2D/3D drawings and get a quote within 24 hours. No MOQ for prototypes and small lots.
Request a Quote