China Professional NEMA17 Closed-Loop Hybrid Stepper Servo Motor with Encoder for Sewing Machine a/c vacuum pump

Product Description

I.CH Motion Hybrid Stepper Servo Motor HS421

General Specifications:

Speed: 0-3000RPM
Insulation Resistance: 100MIN,500VDC
Ambient Temperature: 0-55ºC
Encoder lines: 2500/1000

Mechnical Drawing:

Learwire Drawing:

Customized Product’s Picture:

Electrical Specification:

Series Model Rated Voltage  (V) L
Phase Current   (A) Phase
Holding Torque
Moment of Inertia   (g.cm2) Motor
( g)
HS421-05013A 4.16 51 1.3 3.2 5.5 50 77 530
HS421- 0571 1A 2.3 51 2.3 1.0 1.9 50 77 530
HS421- 0571 3A 4.94 67 1.3 3.8 8.5 56 115 670
HS421-5711A 3.22 67 2.3 1.4 3.1 70 115 670


Encoder 2500CPR     Length 26mm
Encoder 1000CPR Length 18mm

Matched Stepper Servo Driver:


1,Brand new 32-bit DSP

2,16 settings of microstep resolution

3,Servo control algorithm, accurate speed position control and good responsiveness

4,Minimize heat generation by adjusting current in real time based on load

5,Auto Setuped motor parameters

6,Step&Direction/CW&CCW pulse

7,1Mhz digital filter for high speed inputs

8,Self Test-the drive will perform a 2rev,3rps,CW/CCW move test


Parameters Min Typical MAX Unit
Supply voltage 24 75 VDC
Output current(Peak) 1.0 9.8 A
Control signal input current 6 10 15 mA
STEP/DIR Input Signal Voltage 4.0 5.0 28.0 VDC
Step Frequency 2 1M Hz
STEP Minimum Pulse Width High and Low 250 Ns
DIR Minimum Pulse Width 50 us
Drive initialization time 2 S


Heat Sinking Method Natural cooling or fan-forced cooling

Working environment

air conditions Avoid dust, oily mist and corrosive air
temperature 0 – 40°C (32 – 104°F)
humidity 90%RH( no condensation )
Shock 5.9mmax
Storage  temperature -10~70ºC
weight About 300g

Company Introduction:

As a manufacturer and Supplier, headquartered in HangZhou, I.CH is engaged in researching and developing

different types of Servo motor, except for Hybrid Stepper Servo Motor, we also produce Brushless DC Servo

MotorAGV Servo Motor etc.last but not least, we can design customized Servo Motor for Client’s need.



Customer’s visit:


Q: Can I visit your factory?

A: Yes, We are glad to see you, Because of chatting face to face, we can solve some questions which can’t answer on the internet.


If you have any problems, please contact us.

Related Products:


Speed: 0-3000rpm
Certification: ISO9001, CCC, CE
Tem.: 0-55
Encoder: 2500/1000PPS
Rated Speed: 0-3000rpm
Resistance: 100min 500VDC
US$ 80/Piece
1 Piece(Min.Order)




servo motor

Are there advancements or trends in servo motor technology that users should be aware of?

Yes, there have been significant advancements and emerging trends in servo motor technology that users should be aware of. These developments aim to enhance performance, improve efficiency, and provide new capabilities. Here are some noteworthy advancements and trends in servo motor technology:

1. Higher Power Density:

Advancements in servo motor design and manufacturing techniques have led to higher power densities. This means that modern servo motors can deliver more power in a smaller and lighter package. Higher power density allows for more compact and efficient machine designs, particularly in applications with limited space or weight restrictions.

2. Improved Efficiency:

Efficiency is a crucial aspect of servo motor technology. Manufacturers are continuously striving to improve motor efficiency to minimize energy consumption and reduce operating costs. Advanced motor designs, optimized winding configurations, and the use of high-quality materials contribute to higher efficiency levels, resulting in energy savings and lower heat generation.

3. Integration of Electronics and Control:

Integration of electronics and control functions directly into servo motors is becoming increasingly common. This trend eliminates the need for external motor controllers or drives, simplifies wiring and installation, and reduces overall system complexity. Integrated servo motors often include features such as on-board motion control, communication interfaces, and safety features.

4. Digitalization and Connectivity:

Servo motor technology is embracing digitalization and connectivity trends. Many modern servo motors come equipped with digital interfaces, such as Ethernet or fieldbus protocols, enabling seamless integration with industrial communication networks. This connectivity allows for real-time monitoring, diagnostics, and remote control of servo motors, facilitating condition monitoring, predictive maintenance, and system optimization.

5. Advanced Feedback Systems:

Feedback systems play a critical role in servo motor performance. Recent advancements in feedback technology have resulted in more accurate and higher-resolution encoders, resolvers, and sensors. These advanced feedback systems provide precise position and velocity information, enabling improved motion control, better accuracy, and enhanced dynamic response in servo motor applications.

6. Smart and Adaptive Control Algorithms:

Servo motor control algorithms have evolved to include smart and adaptive features. These algorithms can adapt to changing load conditions, compensate for disturbances, and optimize motor performance based on real-time feedback. Smart control algorithms contribute to smoother operation, increased stability, and improved tracking accuracy in various applications.

7. Safety and Functional Safety:

Safety is a paramount concern in industrial automation. Servo motor technology has incorporated safety features and functional safety standards to ensure the protection of personnel and equipment. Safety-rated servo motors often include features such as safe torque off (STO) functionality, safe motion control, and compliance with safety standards like ISO 13849 and IEC 61508.

It’s important for users to stay informed about these advancements and trends in servo motor technology. By understanding the latest developments, users can make informed decisions when selecting and implementing servo motors, leading to improved performance, efficiency, and reliability in their applications.

servo motor

How does the accuracy of a servo motor impact the precision of a system it operates in?

The accuracy of a servo motor has a significant impact on the precision of the system in which it operates. Here’s how the accuracy of a servo motor influences the precision of the system:

1. Positioning Control:

The accuracy of a servo motor directly affects the precision of positioning control in a system. A servo motor with high accuracy can accurately and consistently reach and maintain the desired position. This precision in positioning control is crucial in applications where precise movements, such as in robotics or manufacturing processes, are required. If the servo motor lacks accuracy, it may introduce position errors, leading to reduced precision in the system’s overall operation.

2. Repeatability:

Repeatability refers to the ability of a system to consistently achieve the same position or motion repeatedly. The accuracy of a servo motor plays a vital role in achieving high repeatability. A servo motor with high accuracy will consistently return to the same position when commanded to do so. This level of repeatability is essential in applications where consistent and precise movements are necessary, such as in assembly lines or pick-and-place operations. A lack of accuracy in the servo motor can result in variations in position from one cycle to another, reducing the overall precision of the system.

3. Error Compensation:

The accuracy of a servo motor is crucial for error compensation in a system. In many applications, external factors, such as variations in load or environmental conditions, can introduce errors in the system’s operation. An accurate servo motor can help compensate for these errors by precisely adjusting its position or motion based on feedback from sensors. This error compensation capability contributes to maintaining the precision of the system, as the servo motor can continuously adjust to minimize any deviations from the desired position or trajectory.

4. System Stability:

The accuracy of the servo motor also impacts the stability of the system. A servo motor with high accuracy can achieve stable movements and maintain control over the system’s dynamics. It can respond accurately to control signals, preventing overshoot, oscillations, or erratic behaviors that can degrade system precision. On the other hand, a servo motor with lower accuracy may introduce instability or erratic movements, compromising the overall precision of the system.

5. System Calibration and Calibration:

An accurate servo motor simplifies the calibration and fine-tuning process of a system. When a system requires calibration, an accurate servo motor provides a reliable reference point for adjustments. The precise and consistent movements of the servo motor make it easier to calibrate other components or subsystems in the system, ensuring that the entire system operates with the desired precision. If the servo motor lacks accuracy, it can be challenging to calibrate the system effectively, resulting in reduced precision in the system’s operation.

In summary, the accuracy of a servo motor has a direct impact on the precision of the system it operates in. An accurate servo motor enables precise positioning control, high repeatability, effective error compensation, system stability, and simplified calibration processes. These factors collectively contribute to achieving the desired precision in the system’s operation. Therefore, selecting a servo motor with the appropriate level of accuracy is crucial for ensuring the overall precision and performance of the system.

servo motor

In which industries are servo motors commonly used, and what applications do they serve?

Servo motors are widely used across various industries due to their precise control capabilities and ability to deliver high torque at different speeds. Here are some industries where servo motors are commonly employed, along with their applications:

1. Robotics:

Servo motors are extensively used in robotics to control the movement of robotic limbs and joints. They enable precise positioning and accurate control, allowing robots to perform tasks with high accuracy and repeatability. Servo motors are also employed in humanoid robots, industrial manipulators, and collaborative robots (cobots).

2. Manufacturing and Automation:

In manufacturing and automation industries, servo motors are used in various applications such as conveyor systems, pick-and-place machines, packaging equipment, and assembly lines. Servo motors provide precise control over the movement of components, ensuring accurate positioning, fast response times, and high throughput.

3. CNC Machining:

Servo motors play a vital role in computer numerical control (CNC) machines, where they control the movement of axes (e.g., X, Y, and Z). These motors enable precise and smooth motion, allowing CNC machines to accurately shape and cut materials such as metal, wood, and plastics. Servo motors are also used in CNC routers, milling machines, lathes, and laser cutting equipment.

4. Aerospace and Aviation:

Servo motors find applications in the aerospace and aviation industries, particularly in flight control systems. They are used to control the movement of aircraft surfaces, such as ailerons, elevators, rudders, and flaps. Servo motors ensure precise and responsive control, contributing to the stability and maneuverability of aircraft.

5. Medical Devices:

In the medical field, servo motors are used in various devices and equipment. They are employed in robotic surgery systems, prosthetics, exoskeletons, infusion pumps, diagnostic equipment, and laboratory automation. Servo motors enable precise and controlled movements required for surgical procedures, rehabilitation, and diagnostic tests.

6. Automotive:

Servo motors have several applications in the automotive industry. They are used in electric power steering systems, throttle control, braking systems, and active suspension systems. Servo motors provide accurate control over steering, acceleration, and braking, enhancing vehicle safety and performance.

7. Entertainment and Motion Control:

Servo motors are widely used in the entertainment industry for animatronics, special effects, and motion control systems. They enable realistic movements of animatronic characters, robotic props, and camera rigs in film, television, and theme park attractions. Servo motors also find applications in motion simulators, gaming peripherals, and virtual reality systems.

In addition to these industries, servo motors are utilized in various other fields, including industrial automation, renewable energy systems, textile machinery, printing and packaging, and scientific research.

Overall, servo motors are versatile components that find widespread use in industries requiring precise motion control, accurate positioning, and high torque output. Their applications span across robotics, manufacturing, CNC machining, aerospace, medical devices, automotive, entertainment, and numerous other sectors.

China Professional NEMA17 Closed-Loop Hybrid Stepper Servo Motor with Encoder for Sewing Machine   a/c vacuum pump		China Professional NEMA17 Closed-Loop Hybrid Stepper Servo Motor with Encoder for Sewing Machine   a/c vacuum pump
editor by CX 2023-10-20