
YF-RBT · YF-RBT-EX120-KNEE
120 mm High-Torque Exoskeleton Actuator
High-torque joint actuator for lower-limb exoskeletons and heavy robotic legs, with a quasi-direct-drive ratio that preserves backdrivability and impact tolerance.
Key features
- Low reduction ratio keeps the joint backdrivable
- Integrated torque sensing at the output
- Impact-tolerant for walking and terrain loads
- Sealed housing for outdoor operation
Technical Data
Specifications — YF-RBT-EX120-KNEE
Rated values measured at 25 °C ambient on the type-test bench. Configuration-dependent values are confirmed on the drawing issued with your quotation.
| Parameter | Value |
|---|---|
| Rated Voltage | 48 V DC |
| Rated Power | 350 W |
| Rated Torque | 120 N·m |
| Peak Torque | 300 N·m |
| Output Speed | 28 rpm |
| Gear Ratio | 9:1 |
| Backlash | ≤ 4 arcmin |
| Torque Sensor | Integrated, ±300 N·m |
| Interface | CAN 2.0B |
| Protection Class | IP65 |
| Weight | 3.10 kg |
Rated Voltage
48 V DC
Rated Power
350 W
Rated Torque
120 N·m
Peak Torque
300 N·m
Output Speed
28 rpm
Gear Ratio
9:1
Backlash
≤ 4 arcmin
Torque Sensor
Integrated, ±300 N·m
Interface
CAN 2.0B
Protection Class
IP65
Weight
3.10 kg
Drawings & Documents
Engineering data
Dimensional drawings, torque–speed curves and test documentation are released against your enquiry. Request the current revision from your account engineer.

Product Enquiry
Ask about YF-RBT-EX120-KNEE
Include your supply voltage, load torque, output speed, duty cycle and annual volume. We reply with a technical proposal, drawing and indicative price within one working day.
- Sales direct
- +86 139 6166 3985
- sales@yifandrive.com
- Sample lead time
- 7–10 working days



