China wholesaler Cobot Robot Hand Joint Robot Arm Brushless DC Motor Robot Motor for CNC Machine a/c vacuum pump

Product Description

Cobot Robot Hand Joint Robot Arm Brushless DC Motor Robot Motor for CNC Machine

Product Description

OD 80mm Small size robot joint actuator servo motor is mainly used for Robot Arm, intergrated harmonic reducer, encoder, dc motor and driver. The robot joint servo motor could be used in robot arm joint directly, help build robot joints quickly.

  1. Isolate CANopen communication according to CiA301 V4.2.0 specification. Support SDO, TPDO, RPDO. Support speed mode, position mode (contour mode, interpolation mode). Support heartbeat production and consumption
  2. 15 bit absolute encoder, 1 lap pulse up to 32768.
  3. Multi-stage DD motor structure, large torque output.
  4. Harmonic reducer, motor, driver and encoder are integrated.
  5. Low noise, low vibration, high speed positioning, high reliability.
  6. FOC field oriented vector control, support position / speed closed loop.
  7. Can work at zero hysteresis given pulse state, following zero hysteresis.
  8. 16-bit electronic gear features.
  9. CANopen upper computer is provided, which can monitor motor state and modify parameters.
  10. Position mode, support pulse + direction signal, encoder to follow.
  11. Speed mode, support PWM duty cycle signal speed regulation
  12. It has the function of blocking rotation, over current protection and over voltage protection.
  13. Absolute value of low power consumption and multi-turn
  1. All-in-1 servo 485/CAN communication version can add multi-turn function.
  2. When the motor is powered, there is a charging circuit inside to charge the battery.
  3. When the motor is powered off, the battery current consumption is only 0.07mA.
  4. After the motor has no power supply, the motor shaft is driven to rotate to wake up the encoder and continue to memorize the position.
  5. Multi-turn memory range -60000 ~ 60000 laps.
  6. Simple setting of the origin, it can be set as the CHINAMFG at any position.
  7. Multiple zero return methods: communication zero return, automatic zero return on power-on, and zero point signal output.
  8. Error protection: battery power failure alarm.

Product Features

1. Support SDO TPDO RPDO

2. Provide CANopen host computer software which can monitor motor status and modify parameter
Position mode, support Pulse + Direction signal, encoder follow
Speed mode, support PWM duty cycle signal speed regulation
When the motor is powered, there is a charging circuit inside to charge the battery. After the motor is not powered, the motor shaft is driven to rotate to wake up the encoder and continue to memorize the position; the battery current consumption is only 0.07mA.

Product Parameters

  Parameter  M5730BE17B50L  M5730BE17B80L M5730BE17B100L
Overall parameter Motor rated voltage 36VDC±10% 36VDC±10% 36VDC±10%
Motor rated current 3.5A 3.5A 3.5A
Output torque after deceleration 34NM 35NM 51NM
Weight 1KG 1KG 1KG
Speed range after deceleration 0~30RPM 0~18RPM 0~15RPM
Reducer parameter Reduction ratio 50 80 100
Rated torque 21NM 29NM 31NM
Peak start-stop torque 44NM 56NM 70NM
Allowable maximum value of average load torque 34NM 35NM 51NM
Momentary allowable maximum torque 91NM 113NM 143NM
Backlash <20 arc seconds <20 arc seconds <20 arc seconds
Design life 8500hour 8500hour 8500hour
Motor parameter Torque 1NM 1NM 1NM
Rated speed 1500RPM 1500RPM 1500RPM
Maximum rotational speed 2000RPM 2000RPM 2000RPM
Power 100W 100W 100W
Resistance 0.86 0.86 0.86
Inductance 0.8mh 0.8mh 0.8mh
Rotary inertia 0.69×10-4 KG/M 2 0.69×10-4  KG/M 2 0.69×10-4  KG/M 2
Feedback signal Multi-loop absolute encoder (single-loop 15 bit multi-loop 9 bit)
Cooling mode Natural cooling
Position Control Mode Maximum input pulse frequency 500KHz
Pulse instruction mode Pulse + direction, A phase +B phase
Electronic gear ratio Set up ~65535 to 65535
Location sampling frequency 2KHZ
Protection function Overcurrent alarm
Communication interface Easycan (CAN communication, rate 1 M)
Environment Ambient temperature 0~40°
Max. permissible temperature of motor 85°
Humidity 5~95%




With modular design, compact joint module, its weight, size, installation mode, appearance lamp compared with the traditional products have done a considerable optimization, mainly used in cooperative robot and and light robot, can meet the miniaturization, lightweight, modular needs to a large extent. Can also be widely used in industrial robots, service robots, industrial automation equipment, lathe equipment and etc.

Product Details


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
US$ 478/Piece
1 Piece(Min.Order)


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Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

servo motor

How are servo motors used in CNC machines and other precision machining equipment?

Servo motors play a crucial role in CNC (Computer Numerical Control) machines and other precision machining equipment. They provide precise and dynamic control over the movement of various axes, enabling high-accuracy positioning, rapid speed changes, and smooth motion profiles. Here’s a detailed explanation of how servo motors are used in CNC machines and precision machining equipment:

1. Axis Control:

CNC machines typically have multiple axes, such as X, Y, and Z for linear movements, as well as rotary axes for rotational movements. Servo motors are employed to drive each axis, converting electrical signals from the CNC controller into mechanical motion. The position, velocity, and acceleration of the servo motors are precisely controlled to achieve accurate and repeatable positioning of the machine’s tool or workpiece.

2. Feedback and Closed-Loop Control:

Servo motors in CNC machines are equipped with feedback devices, such as encoders or resolvers, to provide real-time information about the motor’s actual position. This feedback is used in a closed-loop control system, where the CNC controller continuously compares the desired position with the actual position and adjusts the motor’s control signals accordingly. This closed-loop control ensures accurate positioning and compensates for any errors, such as mechanical backlash or load variations.

3. Rapid and Precise Speed Changes:

Servo motors offer excellent dynamic response, allowing CNC machines to achieve rapid and precise speed changes during machining operations. By adjusting the control signals to the servo motors, the CNC controller can smoothly accelerate or decelerate the machine’s axes, resulting in efficient machining processes and reduced cycle times.

4. Contouring and Path Tracing:

CNC machines often perform complex machining tasks, such as contouring or following intricate paths. Servo motors enable precise path tracing by accurately controlling the position and velocity of the machine’s tool along the programmed path. This capability is crucial for producing intricate shapes, smooth curves, and intricate details with high precision.

5. Spindle Control:

In addition to axis control, servo motors are also used to control the spindle in CNC machines. The spindle motor, typically a servo motor, rotates the cutting tool or workpiece at the desired speed. Servo control ensures precise speed and torque control, allowing for optimal cutting conditions and surface finish quality.

6. Tool Changers and Automatic Tool Compensation:

CNC machines often feature automatic tool changers to switch between different cutting tools during machining operations. Servo motors are utilized to precisely position the tool changer mechanism, enabling quick and accurate tool changes. Additionally, servo motors can be used for automatic tool compensation, adjusting the tool’s position or orientation to compensate for wear, tool length variations, or tool offsets.

7. Synchronized Motion and Multi-Axis Coordination:

Servo motors enable synchronized motion and coordination between multiple axes in CNC machines. By precisely controlling the servo motors on different axes, complex machining operations involving simultaneous movements can be achieved. This capability is vital for tasks such as 3D contouring, thread cutting, and multi-axis machining.

In summary, servo motors are integral components of CNC machines and precision machining equipment. They provide accurate and dynamic control over the machine’s axes, enabling high-precision positioning, rapid speed changes, contouring, spindle control, tool changers, and multi-axis coordination. The combination of servo motor technology and CNC control systems allows for precise, efficient, and versatile machining operations in various industries.

servo motor

How is the size of a servo motor determined based on application requirements?

The size of a servo motor is an important consideration when selecting a motor for a specific application. The size of the motor is determined based on various factors related to the application requirements. Let’s explore how the size of a servo motor is determined:

1. Torque Requirements:

One of the primary factors in determining the size of a servo motor is the torque requirements of the application. The motor should be able to generate sufficient torque to handle the load and overcome any resistance or friction in the system. The required torque depends on factors such as the weight of the load, the distance from the motor’s axis of rotation, and any additional forces acting on the system. By analyzing the torque requirements, one can select a servo motor with an appropriate size and torque rating to meet the application’s needs.

2. Speed and Acceleration Requirements:

The desired speed and acceleration capabilities of the application also influence the size of the servo motor. Different applications have varying speed and acceleration requirements, and the motor needs to be capable of achieving the desired performance. Higher speeds and accelerations may require larger motors with more powerful components to handle the increased forces and stresses. By considering the required speed and acceleration, one can determine the size of the motor that can meet these demands.

3. Inertia and Load Inertia Ratio:

The inertia of the load and the inertia ratio between the load and the servo motor are important considerations in sizing the motor. Inertia refers to the resistance of an object to changes in its rotational motion. If the load has a high inertia, it requires a servo motor with sufficient size and torque to accelerate and decelerate the load effectively. The inertia ratio, which is the ratio of the load inertia to the motor inertia, affects the motor’s ability to control the load’s motion accurately. A proper balance between the load and motor inertia is necessary to achieve optimal performance and stability in the system.

4. Duty Cycle and Continuous Operation:

The duty cycle and continuous operation requirements of the application also impact the motor size selection. Duty cycle refers to the ratio of the motor’s operating time to the total cycle time. Applications with high-duty cycles or continuous operation may require larger motors that can handle sustained operation without overheating or performance degradation. It is important to consider the motor’s continuous torque rating and thermal characteristics to ensure it can operate reliably under the given duty cycle requirements.

5. Physical Space Constraints:

The physical space available for installing the servo motor is another factor to consider. The motor’s dimensions should fit within the available space, considering factors such as motor length, diameter, and any mounting requirements. It is essential to ensure that the chosen motor can be easily integrated into the system without interfering with other components or causing space constraints.

6. Weight Limitations:

The weight limitations of the application may influence the motor size selection. If there are weight restrictions, such as in mobile or lightweight applications, it is necessary to choose a servo motor that is compact and lightweight while still providing the required performance. Lighter servo motors can help optimize the overall weight and balance of the system.

7. Cost Considerations:

Cost is also a factor to consider when determining the size of a servo motor. Larger motors with higher torque and performance capabilities tend to be more expensive. It is important to strike a balance between the required performance and the cost constraints of the application. Analyzing the cost-effectiveness and overall value of the motor in relation to the application requirements is essential.

By considering these factors, one can determine the appropriate size of a servo motor that can meet the specific application requirements. It is advisable to consult with manufacturers or experts in the field to ensure the chosen motor size aligns with the application needs and provides optimal performance and reliability.

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 wholesaler Cobot Robot Hand Joint Robot Arm Brushless DC Motor Robot Motor for CNC Machine   a/c vacuum pump		China wholesaler Cobot Robot Hand Joint Robot Arm Brushless DC Motor Robot Motor for CNC Machine   a/c vacuum pump
editor by CX 2023-12-26