• EHD20 Exoskeleton Robot Ultra-High Speed ​​Torque Sensor Brushless Joint Module Motor
  • EHD20 Exoskeleton Robot Ultra-High Speed ​​Torque Sensor Brushless Joint Module Motor
  • EHD20 Exoskeleton Robot Ultra-High Speed ​​Torque Sensor Brushless Joint Module Motor
  • EHD20 Exoskeleton Robot Ultra-High Speed ​​Torque Sensor Brushless Joint Module Motor
  • EHD20 Exoskeleton Robot Ultra-High Speed ​​Torque Sensor Brushless Joint Module Motor
  • EHD20 Exoskeleton Robot Ultra-High Speed ​​Torque Sensor Brushless Joint Module Motor
  • EHD20 Exoskeleton Robot Ultra-High Speed ​​Torque Sensor Brushless Joint Module Motor
  • EHD20 Exoskeleton Robot Ultra-High Speed ​​Torque Sensor Brushless Joint Module Motor
  • EHD20 Exoskeleton Robot Ultra-High Speed ​​Torque Sensor Brushless Joint Module Motor
  • EHD20 Exoskeleton Robot Ultra-High Speed ​​Torque Sensor Brushless Joint Module Motor

EHD20 Exoskeleton Robot Ultra-High Speed ​​Torque Sensor Brushless Joint Module Motor

An integrated high-precision motion unit with integrated motor, reducer, and driver, supporting torque feedback to achieve flexible and precise control.

  • Rated torque N.m:50
  • Rated speed RPM:25
  • Rated current A:13
  • Encoder type and interface:Dual encoder/ABS-17bit
  • Repeat positioning accuracy Degree:<0.01

USD: 1400

ablity:Monthly Output1000

contact shop

Product Description

This joint module is equipped with a 100:1 high-precision reduction ratio, providing large torque output and precise positioning. It integrates a brushless motor and a high-efficiency harmonic reducer, has high rigidity, low backlash, and long life, and is suitable for high-precision, high-load scenarios such as industrial robots and automation equipment, and supports modular rapid integration.

Port Definition

Port Description

EtherCAT_OUT

EtherCAT output

EtherCAT_In

EtherCAT input

CAN_H

CAN_H network signal terminal

CAN_L

CAN_L network signal terminal

GND

Power supply negative pole

VCC

Power supply positive pole

BAT-

Multi-turn battery negative pole

BAT+

Multi-turn battery positive pole

RES-

Discharge resistor port

RES+

Discharge resistor port

 T+

Master sends control command to module

 T-

Module sends status feedback to master

 R+

Master reflects module status data

 R-

Module reflects master control command

Exploded View

The compact size integrated of this product includes FOC control board high-precision multi-turn absolute encoder, frameless torque motor, precision harmonic reducer and other main components.







          1. Motor back cover

          2. Contol board

          3. Encoder

          4. Stator casing

          5. Motor rotor

          6. Motor stator

          7. Harmonic drive

          8. Flex spline cover


Harmonic integrated articulated crossed roller bearing













The rollers are arranged crosswise at 90°, 

which enables them to withstand radial force, axial force and overturning moment, 

and have the characteristics of high precision, high stability, high load capacity and high rigidity.


Built-in Dual Absolute Value Encoder







Built-in dual absolute value encoders, full closed-loop control


The input and output terminals adopt 17-bit

absolute value encoders, with a repeat positioning

accuracy of less than 0.01 degrees. 

It can remember the power-off positions 

of single and multiple turns. 

It features full closed-loop control, compensates 

for transmission errors, and ensures high accuracy without wear.


Communication








Optional EtherCAT, CANopen, communication protocols.

 

Position,Speed, Current loop PID adjustable in real-time.


Product parameters

Parameters

Unit

EHD - 14

EHD-17

EHD-20

EHD-25

RH-32

Gear ratio

-

100

100

100

100

100

Input Voltage

V

48

48

48

48

48

No Load Speed

RPM

30

30

30

30

20

No Load Current

A

0.9

145

2.59

1.61

3.9

Rated Speed

RPM

25

25

25

25

18

Rated Torque

N.m

11

35

50

108

150

Rated Power

W

100

180

250

400

700

Rated Current

A

6.5

9

13

16

20

Peak Torque

N.m

28

54

80

157

229

Peak Current

A

16.25

13.86

20.8

23.2

33.44

Back - EMF Constant

Vdc/kgm

1.39

2.79

2.79

4.89

6.28

Torque Constant

N.m/A

0.02

0.04

0.04

0.07

0.09

Phase Resistance

Ω

0.62

0.7

0.36

0.155

0.08

Phase Inductance

mH

0.43

0.47

0.51

0.33

0.18

Pole Pair

-

10

10

10

10

10

3 Phase Connection

-

Y

Y

Y

Y

Y

Backlash

Arcsec

-

<20

<20

<20

<20

Encoder Type&Interface

-

Dual encoder/ABS - 17bit

Dualencoder/ABS-17bit

Dualencoder/ABS-17bit

Dualencoder/ABS-17bit

Dualencoder/ABS-17bit

Repeat Position Accuracy

Degree

0.01

<0.01

<0.01

<0.01

<0.01

Communication

-

CAN / EtherCAT

CAN  /EtherCAT

CAN /EtherCAT

CAN/ EtherCAT

CAN /EtherCAT

Insulation grade

-

F

F

F

F

F

Stall torque data

EHD-20

Torque

Temperature rise

Stalling time

Phase current

(N.m)

()

(s)

(Arms)

75

12

15

10.5

100

8

10

13.5

125

15

8

18

*1. Standard motors only support non-brake.

*2. Standard motors support CAN bus and EtherCAT.

*3. Standard motors do not have waterproof function. If you need IP54, please contact sales before ordering.

*4. This product also supports 50:1 reduction ratio. Please contact sales to confirm delivery time before ordering.

*5. Rated torque test method: Under ambient temperature of 24 degrees Celsius (no other heat dissipation method), the motor torque reaches temperature balance under the condition of 60 degrees temperature rise and can work for a long time. The rated torque value of the motor.


Dimensions


Application

The joint module is a high-performance mechatronic drive unit that integrates a high-torque brushless motor, a precision reducer, and an intelligent control system. It is suitable for robot joints, automation equipment, industrial robotic arms, and other scenarios. Its 50N·m rated torque and 13A current output can meet medium and high load requirements, while also having high precision, low noise, and long life. The modular design supports rapid installation and maintenance, and is widely used in collaborative robots, medical equipment, logistics sorting, and intelligent manufacturing, significantly improving the dynamic response and energy efficiency of the equipment.

Service

1. Does it support waterproof and dustproof? What is the protection level?

Yes, our joint modules can be customized with waterproof and dustproof functions according to customer needs. 

The standard version is not waterproof for indoor applications, and can be equipped with IP54 protection, which is suitable for certain outdoor 

or humid environments. If you have higher protection requirements (such as IP67), you can contact us for customization.


2. Does it support customized reduction ratio?

Yes. We can provide customized solutions with different reduction ratios according to your application requirements.

The conventional reduction ratio range covers: 10:1 ~ 200:1, and the best combination can be matched according to load, speed, and torque requirements.


3. What is the difference between the single encoder and dual encoder versions?

The single encoder version monitors the rotation of the motor end and is suitable for general precision requirements;

 the dual encoder version monitors the motor end and the output end at the same time, which can effectively compensate 

for the backlash and elastic error, and is suitable for high-precision control and high safety requirements (such as collaborative robots, medical equipment).


4. What communication interfaces can the joint module support?

The standard version supports analog control (current/voltage command) or pulse command control;

According to the needs, it can be optionally equipped with support for industrial bus protocols

such as CANopen, EtherCAT, Modbus-RTU, etc. (customization is required).


5. Does it support integrated drive and control? Can it be directly connected to the controller?

We provide optional integrated drive and control joint modules with built-in motor drivers and position servo controllers.

Users can directly control through the bus or pulse interface without external independent drivers, simplifying wiring and system integration.


6. Are there standard 3D model files available for download?

Yes. We provide 3D model files in STEP format for all models, which facilitates customers to quickly integrate mechanical design.

If you need to obtain it, please contact our sales staff to obtain the download link or data package.


7. What is the operating temperature range?

The standard operating temperature range is: -10°C ~ +50°C.

If you need to resist low or high temperature applications (such as cold storage, hot working environment), 

you can customize special temperature control solutions.


8. Can the joint module be designed hollow? Can it be wired?

Some models are designed with hollow shafts, and the center aperture can be used for wiring, air pipes, water pipes, etc., 

which is convenient for realizing the functional layout of complex end effector.

For specific center aperture sizes, please refer to the model selection table or consult customer service.


9. How long is the standard delivery period and customized delivery period?

Standard model delivery period: usually 7-14 working days.

The delivery period for customized requirements (such as, reduction ratio customization, communication protocol customization, etc.) 

depends on specific requirements, generally 5-10 weeks.


10. How long is the warranty period? How about after-sales service?

All joint module products provide a 12-month warranty period (under normal use).

We provide remote technical support, fault diagnosis guidance, and fast spare parts supply services.

Paid repair and maintenance services are also available outside the warranty period.


Packing list

 

                         A. Power cable *2

                        B. CAN bus communication cable *2/Bleeding resistor cable *1/Multi-turn battery cable *1

                        C. 120Ω terminal resistor *1

                        D. EtherCAT communication cable *2


Recommended products

Rotary Gearbox Actuator Low Noise High Torque Precision Hollow Rotating Platform Electric Rotating Platform Manufacturer

Can be used in pipeline machinery / laser equipment / robotics / automated production / packaging machinery

collect:0

M4215 with harmonic reducer servo motor Integrated Robot Joint Module 0.8KG for mobile robot for welding robot

Applicable to Industrial Automation / Medical Robots / Robot Dogs / Multi-axis Robots / Picking Robots / Mobile Robots / Intelligent Humanoid Robots / Rotating Platform

collect:0

EHD32 150nm robot joint harmonic reduction servo motor

150Nm high torque, 18r/min low speed high precision rotation, suitable for robot joint modules

collect:0

CANopen Servo Motor M4210 Integrated Harmonic Drive Reducer Robot Joint Actuator for Robot Arm

Can be used for medical robots / rehabilitation assistance robots / surgical robots / laboratory automation equipment / medical automatic handling platforms / exoskeleton robots

collect:0