One-Stop Custom Robot Joint Motor Manufacturer
MAINTEX, with 20 years of motor R&D and manufacturing experience, focuses on customized integrated planetary robot joint motors for quadruped and humanoid robots. We support full customization on size, voltage, torque and logo, and our 70 R&D engineers provide free 2D & 3D drawings within 72 hours. Controlled by 80 QA staff and fully certified with international standards, we ensure consistent product stability and punctual delivery, delivering reliable one-stop manufacturing services for global clients.
Integrated Planetary Robot Joint Motors
Plug-and-play robotic joint module with built-in drive, encoder and planetary gearbox for quadruped robot prototype development.
High torque impact-resistant robot joint actuator for medium quadruped robot hip & knee leg joints.
- Model: ZD6012-PA2-20
- Rated Voltage: 24V
- Rated Torque: 10N·m | Peak Torque: 30N·m
- Rated Speed: 80rpm
- Protection Grade: IP65
- Weight: 500g
Lightweight high-speed legged robot joint for small quadruped ankle and auxiliary joints.
- Model: ZD6012-PA1-10
- Rated Voltage: 24V
- Rated Torque: 6N·m | Peak Torque: 18.65N·m
- Rated Speed: 170rpm
- Protection Grade: IP65
- Weight: 460g
Why Choose MAINTEX Integrated Planetary Robot Joint Motors
Our two robot joint motor models share consistent electromagnetic design and unified mounting size. Differentiated speed & torque output covers light fast movement and heavy load impact scenarios for legged robots.
Battery-friendly design lowers robot project R&D cost.
Identical resistance & inductance, shared drive firmware for two models.
High torque density, locked at standard 70mm uniform outer diameter.
Stable -20℃~125℃ operation without extra protective outer casing.
Capture real load angle, remove backlash, zero homing after power loss.
Single-stage high efficiency; two-stage stronger torque magnification.
Standard dimension supports direct replacement of mainstream joints.
Light single-stage & rigid long two-stage to fit different space limits.
How Do We Guarantee Low Backlash & Robot Joint Performance?
We run six complete inspection procedures for every MAINTEX low-backlash planetary robot joint motor. Raw gears, encoders, and magnetic steel are strictly sorted and matched at the initial stage. Semi-finished motors undergo electromagnetic performance testing, and gear pre-tightening is applied to minimize backlash before IP65 sealing sampling. Each unit passes a 2-hour full-load aging test. Unique serial numbers are assigned to record all test data for single-stage and two-stage models, ensuring full life-cycle traceability and reliable 24-hour continuous operation.
Custom Modifications & Optional Upgrades For Robot Joint Actuators
We supply various practical upgrades for MAINTEX robot joint motors applied in quadruped and humanoid robots. Optional parts include power-off brakes, hollow wiring flanges, anti-corrosion housing and dual encoders. We can adjust voltage to 12V/48V, laser mark customer logos, remake mounting structures and develop exclusive firmware with private communication protocols.
Resource
Download full specs, dimensions and performance data of integrated robot actuator kits.
Watch production and quality inspection workflows of single & two-stage planetary joint modules.
Download official CE, RoHS, REACH certification documents of robot joint torque actuators for project approval.
Robot Joint Motor Production & Quality Control
MAINTEX owns a 45,000 ㎡ standardized factory with 1,200+ employees and 225 independent patents. Adopting high-precision testing equipment from Germany Zeiss and Japan Osaka, every batch of robot joint motors is fully inspected and delivered with complete original test reports. We provide real-time production photos, videos and online factory meetings to track every production procedure, achieving full process transparency and traceability. We support 8D failure analysis, serving over 3,000 global projects and exporting to more than 100 countries.
Robot Joint Motor Application Solutions
The ZD6012-PA1-10 single-stage planetary robot joint motor is a lightweight integrated actuator tailored for small quadruped legged robots. Weighing only 460g and delivering 170rpm high-speed output, it lowers leg inertia significantly. Its slim 59.4mm structure fits compact leg layouts, enabling flexible walking, steering and obstacle crossing for small robot prototypes.
The ZD6012-PA2-20 two-stage planetary robot joint actuator offers stable 10N·m rated torque and 30N·m peak torque. Optimized for medium quadruped legged robot hips, it handles frequent squatting, standing, jumping and weight-bearing movements. The reinforced two-stage planetary structure provides higher rigidity and excellent impact resistance for daily gait cycling.
As a core power unit for quadruped robot knees, the ZD6012-PA2-20 planetary robot joint motor features stable low-speed output and strong overload resistance. With IP65 full sealed housing, this legged robot actuator maintains steady performance during long-term cyclic gait movements in dusty, humid outdoor test scenarios.
Featuring unified 24VDC power supply and consistent electromagnetic performance, our single-stage and two-stage planetary robot joint motors support shared control firmware. Reliable batch consistency under ±3% deviation, complete 2D/3D drawings and test data greatly simplify R&D and debugging for quadruped legged robot prototype projects.
More About Our Robot Joint Motor
- Robot Joint Motor Specification Table
- Gallery
| Model | Rated Voltage (V) | Rated speed (rpm) | Rated Torque (N ·m) | Peak Torque (N ·m) | EMF constant (Vrms/krpm) | wire resistance (Ω) | Wire Inductance (mH) | Pole Pairs (p) | Operating Temperature | Protection Grade | Reduction Ratio | Cabling Type | External Cabling | weight（g) | OD （mm） | height （mm) |
| ZD6012-PA2-20 | 24 | 80 | 10 | 30 | 6.41 | 0.54 | 0.34 | 7 | ≤125°C | IP65 | 20.125 | External Cabling | Single Encoder | 500g | 70 | 77.3 |
| ZD6012-PA1-10 | 24 | 170 | 6 | 18.65 | 6.41 | 0.54 | 0.34 | 7 | ≤125°C | IP65 | 10.36 | Encoder Configu ration | Single Encoder | 460g | 70 | 59.4 |
Testimonials
We had large planetary gear backlash over 5 arcmin and laggy human-robot interaction on our quadruped robot. MAINTEX preloaded gear design cuts backlash under 1 arcmin, compliant force control make movement smooth and meet ISO/TS15066 very well.
Lukas MüllerGermanyWe were worried about high mold costs and slow production for small batches. But they didn’t make new molds, just adjusted winding and stack thickness, which saved us a lot. They also have a dedicated production line and guarantee on delivery. No more delays, no huge upfront costs. Great for our R&D projects.
Ethan WilsonUnited StatesThe planetary joint module has excellent thermal control with less than 40K temperature rise. Its smart driver monitors 12 parameters and supports fast remote troubleshooting, perfect for 24h continuous working.
Javier TorresSpain
PA1 single-stage robot joint is better for lightweight, high-speed small quadruped robot locomotion, while PA2 two-stage robot joint fits heavy-load, impact-resistant hip & knee joint scenarios. We provide free torque safety factor calculation to help you select the right model for your robot project.
The whole series uses wide-temperature synthetic grease that starts normally at -20℃ with no obvious torque decay. It is suitable for cold storage robots and outdoor inspection robots without extra heating devices, ensuring stable gait movement.
We support neutral no-label and custom laser LOGO services for quadruped and humanoid robot joints. An NDA can be signed, and we will not provide the same solution to competitors in your field to protect your R&D achievements.
Our integrated planetary joint modules support CANopen and RS485 communication protocols, which can be easily connected to mainstream robot controllers. We also provide test command libraries for faster robot system integration and development.
1-unit sample orders are warmly accepted for robot prototype testing. The sample shipping cost can be fully deducted from your subsequent bulk orders, effectively lowering your robot R&D and verification cost.
