Overview
The EYOU PHU11H-52 is a harmonic-drive robot actuator with a built-in driver, 48 VDC rated operation, dual 19-bit absolute encoders, and 51 or 101 reduction-ratio options. Choose a With Brake or Without Brake configuration to suit the application. The actuator supports EtherCAT and CANopen communication and is specified for robotics and automation scenarios including humanoid robots, robotic arms, exoskeletons, quadruped robots, AGV vehicles, and ARU robots.
Features
- Harmonic reducer with a split-body design that separates the motor and reducer.
- Built-in driver and dual absolute encoders: motor side 19-bit and reducer side 19-bit.
- EtherCAT and CANopen communication protocols; software-configurable protocol switching is indicated for the PHU series.
- Control modes: Profile Position (PP), Profile Velocity (PV), Profile Torque (PT), Cyclic Synchronous Position (CSP), Cyclic Synchronous Velocity (CSV), and others.
- Selectable 51 or 101 reduction ratios, which provide different speed and torque profiles.
- Selectable With Brake or Without Brake configuration; the With Brake option corresponds to an optional brake module.
Specifications
| Parameter | Value |
|---|---|
| Module model | PHU-11H-52 |
| Reducer type | Harmonic |
| Motor rated power | 46 W |
| Motor rated torque | 0.11 N·m |
| Motor peak torque | 0.33 N·m |
| Reduction ratio | 51 / 101 |
| Joint rated power — life constraint | 14 / 10 W |
| Rated torque at 2000 rpm input | 3.5 / 5 N·m |
| Average load torque at output | 5.5 / 8.9 N·m |
| Peak torque at output | 8.3 / 11 N·m |
| Maximum allowable external torque at output — instantaneous | 17 / 25 N·m |
| Backlash | ≤30 / ≤30 arcsec |
| Rated speed at output — life constraint | 39 / 20 rpm |
| Peak speed at output | 100 / 50 rpm |
| Brake (B/N) | B/N |
| Dimensions — outer diameter × axial | Φ52 × 70 mm |
| Weight — B/N | 0.44 / 0.40 kg |
| Hollow diameter | 8 mm |
| Housing appearance — process color | Black anodized (non-sandblasted) |
| Reducer appearance — process color | Outer ring blackened |
| Radial allowable load at output — dynamic/static | 130 N |
| Axial allowable load at output — dynamic/static | 130 N |
| Output bending moment | 16 N·m |
| Reducer torsional stiffness | 2250 / 2430 N·m/rad |
| Reducer input inertia — B | 13.248 / 13.248 kg·mm² |
| Equivalent joint output inertia — B | 34458 / 135143 kg·mm² |
| Rated operating voltage | 48 VDC |
| Operating voltage range | 24–48 VDC |
| Driver | Built-in |
| Encoder / bit | Dual absolute / motor side 19-bit & reducer side 19-bit |
| Driver interface — see terminal model description | Power (DC in, DC out), CAN FD (In, Out), EtherCAT (In, Out), STO (1, 2) (only for OD ≥60) |
| Communication protocol — see communication description | EtherCAT / CANopen |
| Control modes | Profile Position (PP), Profile Velocity (PV), Profile Torque (PT), Cyclic Synchronous Position (CSP), Cyclic Synchronous Velocity (CSV), etc. |
| Operating ambient temperature | -20–60 °C |
| Housing temperature rise | ≤60 °C |
| Noise | ≤60 dB |
| Life | >8000 h |
Applications
- Humanoid robots
- Robotic arms
- Exoskeletons
- Quadruped robots
- AGV vehicles
- ARU robots
- Industrial automation and heavy-duty robot applications
- Collaborative robotic arms
Documents and 3D Models
EYOU CANable — User Manual (PDF)
PHU11H 52 CAN EYOU — 3D Model (STEP)
PHU11H 52 ECAT EYOU — 3D Model (STEP)
EYOU PHU11H 52 Drawing — Drawing (PDF)
EYOU PHU RHU Series Joint CANopen EtherCAT Communication — Manual (PDF)
EYOU Robot Joint Catalog — Robot Joint Product Catalog (PDF)
EYOU RP Series EN V1.0 20260608 — User Manual (PDF)
EYOU UART Debug Module — User Manual (PDF)
Visual Details
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Application Examples



Options and Model Comparison

Features and Design

Interfaces and Connections

Additional Product Details
