Modules for embodied AI robots
Joint modules, actuators and dexterous hands from six leading Chinese manufacturers — one partner for selection, pricing, export paperwork and worldwide delivery.
Get a quoteBrowse product linesCompare joint modules across four brands by torque band →
Product lines
Joint modules split by reducer type — harmonic for the limbs, planetary for the axes that get hit — plus the hands and gloves that go on the end. Need to compare brands? Open the four-brand joint module comparison.
High reduction in one stage, near-zero backlash, highest torque density. Tongchuan, Crabnova and EYOU.
02Shock-tolerant and cheaper at the same size. EYOU RP humanoid and PP small-frame lines.
03Multi-DOF end-effectors with tactile sensing and force control, from utility hands to research flagships.
04Hand tracking and force feedback for teleoperation and demonstration datasets.
Actuator lines
Harmonic and planetary rotary actuators from five factories, plus the Linkerbot hand and glove ecosystem. Numbers below are the rated spans we supply — full tables on each brand page.
Six frames, three ratios each. ≤60 arcsec transmission accuracy, ≤10 arcsec repeatability.
View models →Five sub-series: Lite, base DNN, waist FBN, RBV3 with brake + torque sensor, and the RMV3 industrial line up to Φ170.
View models →Widest torque span of any line we carry; ±0.5% FS force control at 8 kHz on PHU and RHU.
View models →24–80 V wide input from a Φ30 frame; PRO-S is the shortened, lighter variant. Figures pending a catalogue re-check.
View models →Best price-per-N·m — the default pick for hands, wrists and student builds.
View models →Not sure which line fits a joint? Send us torque, envelope and protocol — we shortlist across all five, not just one. Compare every model on one page →
Featured modules
Representative modules across our six factories. Full ranges and specs on each brand page.
83 N·m rated / 351 N·m peak output · 81 / 101 / 121:1 · 1.85 kg
High-ratio harmonic · brake + torque sensor
84 N·m rated / 351 N·m instantaneous max · 101:1 · 2.35 kg
Compact rotary actuators for arm axes
Miniature brushless joints for hands
Humanoid platform hand · tactile options
Beyond the catalog
The manufacturers listed on this site are the ones we hold standing relationships with — the lines we know well enough to publish full parameter tables for. That is a floor, not a ceiling. If a part exists in China's robotics supply chain, we can quote it, and we can put it on the same purchase order as everything else.
Other harmonic, planetary and quasi-direct-drive makers, frameless motors and drivers, torque sensors, brakes and encoders.
Brackets, flanges, adapters and structural components to drawing — prototype batch or production run.
Cable assemblies, connectors, distribution boards, motor controllers and power stages.
One purchase order, one point of contact, one consolidated shipment — even when the parts come from four different factories.
Why EmboParts
Going factory to factory means five languages, five minimum order quantities, five payment terms and five versions of the truth. We quote across all of them at once, on the same terms, so you compare instead of negotiate.
Every factory names torque differently — rated at 2000 rpm, allowable average load, start–stop peak, instantaneous max. We normalise them onto a single scale before we quote, so two very different numbers never look like the same one.
You talk to people who read datasheets, size joints and debug EtherCAT. We work in English and Chinese, and we take your questions straight to the factory's own engineers — no distributor queue in between.
Export paperwork, customs, duties and import compliance, and several factories consolidated into one shipment. Prototype quantities are normal for us.
What we do
Each one removes a specific pain point in sourcing robot modules from overseas factories.
Component selection and spec review. Torque, speed and payload calculations, plus compatibility assessment against your existing stack.
Several factories, one shipment. Export paperwork, customs, duties and import compliance, tracked express worldwide — plus sample stock in California for North American buyers.
Mechanical mounting, wiring, and protocol setup (EtherCAT, CAN / CAN FD), plus control software and API integration.
You claim with us, not with a factory you have never spoken to. Diagnostics, troubleshooting and an express replacement unit program.
Custom brackets and flanges, modified torque or speed specs, special cable lengths, joint development with factory engineers.
Insights
Selection guides, comparison tables and integration notes from the modules we work with every day.
FAQ
Yes — prototype quantities are normal for us. Tell us the quantity and we quote per project, samples and production together.
EtherCAT for high axis counts and synchronised motion; CAN or CAN FD (MIT mode) for prototypes and lower axis counts. Most lines offer both.
Factory orders are typically 4–6 weeks, dispatched worldwide with tracked express. North American buyers can also draw on sample stock in California. We handle export paperwork, customs, duties and import compliance.
Yes. The brands here are the ones we hold standing relationships with, not a limit. Other module makers, machined parts, harnesses and electronics — one PO, one point of contact, one consolidated shipment.
Contact
Send your build requirements — we reply within one business day with a shortlist and pricing.
Opens your mail client with these details pre-filled — attach drawings or a spec sheet and send. We reply within one business day, or email sales@emboparts.com directly.