Overview
The EYOU PHA11H-101-C is a harmonic-drive robotic joint actuator with a 101 reduction ratio, built-in driver, and CANopen communication. It operates from 24–48 VDC and uses dual absolute 16-bit encoders on the motor and reducer sides. Its 52 × 55.5 mm form factor, 0.375 kg weight, and 6 mm hollow diameter support integration into humanoid robots, robotic arms, exoskeletons, quadruped robots, AGV vehicles, and ARU robots.
Features
- Harmonic reducer with a 101 reduction ratio.
- Built-in driver with CANFD input/output and CANopen communication.
- Dual absolute encoders: 16-bit motor side and 16-bit reducer side.
- Supports Profile Position (PP), Profile Velocity (PV), Profile Torque (PT), Cyclic Synchronous Position (CSP), Cyclic Synchronous Velocity (CSV), and other control modes.
- Matte black anodized housing and blackened reducer outer ring.
Specifications
| Parameter | Value |
|---|---|
| Module Model | PHA11 |
| Reducer Type | Harmonic |
| Motor Rated Power | 37.7 W |
| Motor Rated Torque | 0.12 N·m |
| Motor Peak Torque | 0.36 N·m |
| Reduction Ratio | 101 |
| Joint Rated Power — Life Constraint | 10 W |
| Rated Torque at 2000 rpm Input | 5 N·m |
| Average Load Torque at Output | 8.9 N·m |
| Peak Torque at Output | 11 N·m |
| Max. Allowable External Torque at Output (Instantaneous) | 25 N·m |
| Backlash | ≤30 arcsec |
| Rated Speed at Output — Life Constraint | 20 rpm |
| Peak Speed at Output | 36 rpm |
| Brake (B/N) | N |
| Dimensions (Outer Diameter × Axial) | Φ52 × 55.5 mm |
| Weight | 0.375 kg |
| Hollow Diameter | 6 mm |
| Housing Appearance (Process Color) | Matte Black Anodized |
| Reducer Appearance (Process Color) | Outer Ring Blackened |
| Radial (Dynamic/Static) Allowable Load at Output | 130 N |
| Axial (Dynamic/Static) Allowable Load at Output | 130 N |
| Output Bending Moment | 16 N·m |
| Reducer Torsional Stiffness | 2430 N·m/rad |
| Reducer Input Inertia | 11 kg·mm² |
| Equivalent Joint Output Inertia | 112211 kg·mm² |
| Rated Operating Voltage | 48 VDC |
| Operating Voltage Range | 24–48 VDC |
| Driver | Built-in |
| Encoder/Bit | Dual Absolute / Motor side 16-bit & Reducer side 16-bit |
| Driver Interface (see terminal model description) | Power (DC in, DC out), CANFD (In, Out) |
| Communication Protocol (see communication description) | 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
Resources
- EYOU CANable — User Manual (PDF)
- EYOU PHA11 — 3D Model (STP)
- EYOU PHA11H 101 C1 Drawing — Drawing (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

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