China Custom Brake Model 48VDC Rotary Robot Joint BLDC Servo Motor 500W Robot Joint Servo Actuator Motor with Great quality

Product Description

Small size Harmonic Drive Robot Joint DC Motor 48V Robot Joint Module Exoskeleton Motor

Product Description


The outer diameter of this series of joint modules ranges from 40mm to 170mm, with exquisite design and compact structure. The small size includes FOC control board, high-precision multi-turn absolute encoder, frameless torque motor, precision harmonic reducer and other main components , saving customers the labor and time cost of selecting, designing, purchasing, and assembling hundreds of mechanical and electronic components.

Product Features

The smallest size is only 40mm, and the weight is 0.13kg

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

Low-power encoder with only 46 μA standby current.

Product Parameters

Model TD-70-90-PRO-XX TD-70-90-PRO-XXB
Ratio 50/80/100/120 50/80/100/120
Start-stop CHINAMFG torque (N.m) 69/91/102/108 69/91/102/108
Instantaneous maximum torque (N.m) 121/158/182/182 121/158/182/182
Rated torque (N.m) 42/58/91/61 42/58/91/61
Output CHINAMFG Speed (RPM) 80/65/40/35 80/65/40/35
Rated speed (RPM) 61/38/30/24 61/38/30/24
Motor power (W) 500 500
Supply voltage (V) 24-48 24-48
Rated current (A) 8.4 8.4
Peak current(A) 24 24
Encoder Resolution (Bit) 17 17
Backlash (arcsec) 20/20/10/10 20/20/10/10
communication bus CAN CAN
Length(mm) 72.6 96.6
Weight(kg) 1.25 1.67


Packaging & Shipping


This kind of robot joint modules can be used in robots, humanoid robots, and exoskeletons, helping us to quickly build robot arms and greatly shorten the development cycle.

Company Profile

HangZhou CHINAMFG Mechanical&Electrical Equipment Co., Ltd. is a professional manufacturer of Robotic Joint Module. Our factory dedicates to the research of robot joint motor since 2571s, more than 10 years’ experience makes our product quality rank in the leading position in China. Wth an annual output of 80,000 sets of various products for the market, with high precision and stable performance, our robotic joint modules are welcomed by customers from India, Thailand, Iran, South Korea, Russian Federation, Sweden, Ireland, Poland, USA, France and so on.

After Sales Service

1. We accept small order of Joint module;
2. Sample order of Joint module delivery time is in 9 days, mass quantity order lead time is 9-15 days;
3. We can accept payment via paypal, T/T and L/C;
4.Quality assurance of our Joint module is 1 year, and we can provide you professional technical support;

5. We provide free software wand training how to use the products. Engineers are available for technical support.



Q: Are you trading company or manufacturer?
A: We are manufacturer and trading company.

Q: Can I have a sample order?
A: Yes, we welcome sample order to test and check quality.

Q: How long is your delivery time?
A: Due to the complex process, production takes 8-10 working days. For customized goods, please check with us before order.

Q. How do you ship the goods and how long does it take to arrive?
A: Usually by express, like DHL, UPS, FedEx, EMS or TNT; By air and sea are also available.Express takes 3-15 days to arrive.

Q: What is your terms of payment?
A: We accept Trade Assurance Order, TT, Paypal, West Union and L/C.

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Application: Industial Robot
Operating Speed: Adjust Speed
Excitation Mode: Excited
Function: Driving
Casing Protection: Closed Type
Number of Poles: 2
US$ 976/Piece
1 Piece(Min.Order)


servo motor

Where can individuals find reliable resources for learning more about servo motors and their applications?

Individuals interested in learning more about servo motors and their applications can access a variety of reliable resources. These resources provide valuable information, technical knowledge, and practical insights. Here are some places where individuals can find reliable resources for expanding their understanding of servo motors:

1. Manufacturer Websites:

Leading servo motor manufacturers often provide detailed documentation, technical specifications, application notes, and white papers on their websites. These resources offer in-depth information about their products, technologies, and best practices for servo motor applications. Users can visit the websites of prominent manufacturers to access reliable and up-to-date information.

2. Industry Associations and Organizations:

Industry associations and organizations related to automation, robotics, or specific industries often offer educational materials and resources on servo motors. They may provide technical publications, webinars, seminars, and training programs focused on servo motor technology and applications. Examples of such organizations include the International Society of Automation (ISA), the Robotics Industries Association (RIA), and the Society of Automotive Engineers (SAE).

3. Books and Technical Publications:

Books dedicated to servo motor technology, control systems, and industrial automation can provide comprehensive knowledge on the subject. Some recommended titles include “Servo Motors and Industrial Control Theory” by Riazollah Firoozian, “Electric Motors and Drives: Fundamentals, Types, and Applications” by Austin Hughes and Bill Drury, and “Servo Motors and Motion Control: An Introduction” by Albert F. Seabury. Technical publications and journals such as IEEE Transactions on Industrial Electronics and Control Engineering Practice also offer valuable insights and research findings.

4. Online Courses and Training Platforms:

Various online learning platforms offer courses and training programs focused on servo motors and their applications. Websites like Udemy, Coursera, and LinkedIn Learning provide access to video-based courses taught by industry experts. These courses cover topics such as servo motor fundamentals, motion control, programming, and troubleshooting. By enrolling in these courses, individuals can acquire structured knowledge and practical skills related to servo motors.

5. Technical Forums and Discussion Groups:

Participating in technical forums and discussion groups can be an effective way to learn from industry professionals and enthusiasts. Websites like Stack Exchange, Reddit, and engineering-focused forums host discussions on servo motors, where individuals can ask questions, share experiences, and gain insights from the community. It’s important to verify the credibility of the information shared in such forums and rely on responses from trusted contributors.

6. Trade Shows and Conferences:

Attending trade shows, exhibitions, and conferences related to automation, robotics, or specific industries can provide opportunities to learn about servo motors. These events often feature presentations, workshops, and demonstrations by industry experts and manufacturers. Participants can gain hands-on experience, interact with professionals, and stay updated with the latest advancements in servo motor technology.

By leveraging these reliable resources, individuals can deepen their knowledge and understanding of servo motors and their applications. It is advisable to consult multiple sources and cross-reference information to ensure a comprehensive understanding of the subject.

servo motor

What factors should be considered when selecting a servo motor for a specific application?

When selecting a servo motor for a specific application, several factors need to be considered. These factors help ensure that the chosen servo motor meets the requirements and performs optimally in the intended application. Here are some key factors to consider:

1. Torque and Power Requirements:

One of the primary considerations is the torque and power requirements of the application. The servo motor should be able to generate sufficient torque to handle the load and overcome any resistance or friction in the system. Additionally, the power rating of the motor should match the power supply available in the application. It is essential to evaluate the torque-speed characteristics of the servo motor to ensure it can deliver the required performance.

2. Speed and Acceleration:

The required speed and acceleration capabilities of the servo motor should align with the application’s needs. Different applications have varying speed and acceleration requirements, and the servo motor should be able to meet these demands. It is crucial to consider both the maximum speed that the motor can achieve and the time it takes to accelerate or decelerate to specific speeds. Evaluating the servo motor’s speed-torque characteristics and acceleration capabilities is necessary for selecting the right motor.

3. Positioning Accuracy and Repeatability:

The desired positioning accuracy and repeatability of the application play a significant role in servo motor selection. If precise positioning is crucial, a servo motor with high accuracy and low positioning errors should be chosen. The feedback mechanism, such as encoders or resolvers, should provide the required resolution to achieve the desired accuracy. Repeatability, the ability to consistently reach the same position, should also be considered, especially in applications where repetitive movements are necessary.

4. Environmental Conditions:

The environmental conditions in which the servo motor will operate should be taken into account. Factors such as temperature extremes, humidity, dust, and vibration can affect the motor’s performance and lifespan. In harsh environments, it may be necessary to choose a servo motor with appropriate protection ratings, such as IP (Ingress Protection) ratings, to ensure reliable operation and longevity.

5. Control System Compatibility:

The compatibility of the servo motor with the control system used in the application is crucial. The motor should be compatible with the control signals and communication protocols employed in the system. This includes considerations such as voltage compatibility, control signal types (analog, digital, pulse), and communication interfaces (such as Ethernet, CAN, or Modbus). Ensuring compatibility will facilitate seamless integration and efficient control of the servo motor within the application.

6. Size and Weight Constraints:

The physical size and weight limitations of the application should be considered when selecting a servo motor. The motor’s dimensions should fit within the available space, and its weight should not exceed the application’s weight capacity. Compact and lightweight servo motors may be preferred in applications where space is limited or weight is a critical factor.

7. Cost Considerations:

The cost of the servo motor and its overall value for the application should be evaluated. It is essential to consider the initial purchase cost as well as the long-term maintenance and operational costs. While cost is a factor, it should not be the sole determining factor, as compromising on quality or performance may lead to suboptimal results.

By considering these factors, one can make an informed decision when selecting a servo motor for a specific application. It is recommended to consult with manufacturers or experts in the field to ensure the chosen servo motor meets the application’s requirements and provides reliable and efficient performance.

servo motor

Can servo motors be used in robotics, and if so, how are they implemented?

Yes, servo motors are commonly used in robotics due to their precise control capabilities and suitability for a wide range of robotic applications. When implementing servo motors in robotics, several factors need to be considered. Here’s an overview of how servo motors are used and implemented in robotics:

1. Joint Actuation:

Servo motors are often used to actuate the joints of robotic systems. Each joint in a robot typically requires a motor to control its movement. Servo motors provide the necessary torque and angular control to accurately position the joint. They can rotate between specific angles, allowing the robot to achieve the desired configuration and perform precise movements.

2. Position Control:

Servo motors excel at position control, which is essential for robotics applications. They can accurately maintain a specific position and respond quickly to control signals. By incorporating servo motors in robotic joints, precise positioning control can be achieved, enabling the robot to perform tasks with accuracy and repeatability.

3. Closed-Loop Control:

Implementing servo motors in robotics involves utilizing closed-loop control systems. Feedback sensors, such as encoders or resolvers, are attached to the servo motors to provide real-time feedback on the motor’s position. This feedback is used to continuously adjust the motor’s behavior and ensure accurate positioning. Closed-loop control allows the robot to compensate for any errors or disturbances and maintain precise control over its movements.

4. Control Architecture:

In robotics, servo motors are typically controlled using a combination of hardware and software. The control architecture encompasses the control algorithms, microcontrollers or embedded systems, and communication interfaces. The control system receives input signals, such as desired joint positions or trajectories, and generates control signals to drive the servo motors. The control algorithms, such as PID control, are used to calculate the appropriate adjustments based on the feedback information from the sensors.

5. Kinematics and Dynamics:

When implementing servo motors in robotics, the kinematics and dynamics of the robot must be considered. The kinematics deals with the study of the robot’s motion and position, while the dynamics focuses on the forces and torques involved in the robot’s movement. Servo motors need to be properly sized and selected based on the robot’s kinematic and dynamic requirements to ensure optimal performance and stability.

6. Integration and Programming:

Servo motors in robotics need to be integrated into the overall robot system. This involves mechanical mounting and coupling the motors to the robot’s joints, connecting the feedback sensors, and integrating the control system. Additionally, programming or configuring the control software is necessary to define the desired movements and control parameters for the servo motors. This programming can be done using robot-specific programming languages or software frameworks.

By utilizing servo motors in robotics and implementing them effectively, robots can achieve precise and controlled movements. Servo motors enable accurate positioning, fast response times, and closed-loop control, resulting in robots that can perform tasks with high accuracy, repeatability, and versatility. Whether it’s a humanoid robot, industrial manipulator, or collaborative robot (cobot), servo motors play a vital role in their actuation and control.

China Custom Brake Model 48VDC Rotary Robot Joint BLDC Servo Motor 500W Robot Joint Servo Actuator Motor   with Great quality China Custom Brake Model 48VDC Rotary Robot Joint BLDC Servo Motor 500W Robot Joint Servo Actuator Motor   with Great quality
editor by CX 2024-02-05