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China supplier 7mm Diameter Custom Torque Micro Electric DC Brush Vibration Motor vacuum pump adapter

Product Description


7A Series  φ7mm x L16.6   Precious Metal Brushes  

Motor Paramter Motor Model
Values at nominal voltage 7A2NA-
  1 Rated voltage V 3.4 3.7      
Free Load 2 No load speed rpm 49193 57168      
3 No load current mA 71 109      
At Max. Efficiency 4 Max. efficiency % 71.55% 71.80%      
5 Speed rpm 42617 49577      
6 Current mA 459 711      
7 Torque g.cm 2.78 3.71      
At Max. Output 8 Max. output W 2.63 4.1      
9 Speed rpm 24597 28584      
10 Current mA 1524 2375      
11 Torque g.cm 10.4 13.97      
At Stall 12 Stall current A 2.98 4.64      
13 Stall torque g.cm 20.8 27.94      
Motor Constants
  14 Teminal resistance Ω 0.9 0.52      
  15 Torque constant g.cm/A 7.158 6.166      
  16 Speed  constant rpm/V 13620 15823      
  17 Speed/Torque constant rpm/g.cm 2364.7 2046.1      

Motor Characteristic Typical Performance
Thermal parameters  

18 Ambient temperature -20~+65 ºC
19 Max. permissible winding temperature                                 85 ºC
Mechanical parameters
20 Max. penmissible No-load speed 55000 rpm
21 Max. axial load(dynamic) 0.15 N
Other parameters
22 Number of pole pairs 1  
23 Number of commutator segments 3~5  
24 Weight 2.6 g
1 Rotation direction, wire specification and performance parameters can be
made according to customer’s requirement.
2 Motor can be mounted with various shapes and sizes of eccentric weight which
is made of iron, brass or ferro-alloy to become vibration motor.
3 Dimension with “*” in the drawing can be adjusted according to customer’s requirement.
       1g=0.035oz    1inch=25.4mm    1g.cm=0.098mN.m     1oz=28.35g     1mm=0. 0571 inch     1mN.m=10.2g.cm

Company & Factory




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Application: Automation Equipment, Moving Machinery
Operating Speed: High Speed
Power Source: DC Motor
US$ 0/Piece
1 Piece(Min.Order)


Order Sample

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about shipping cost and estimated delivery time.
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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

electric motor

What factors should be considered when selecting the right electric motor for a task?

When selecting the right electric motor for a task, several factors need to be considered to ensure optimal performance and compatibility. Here’s a detailed overview of the factors that should be taken into account:

  1. Load Requirements: The first consideration is understanding the specific load requirements of the task. This includes factors such as the torque or force needed to drive the load, the speed range required, and any variations in load that may occur. By accurately assessing the load requirements, you can determine the appropriate motor type, size, and characteristics needed to handle the task effectively.
  2. Motor Type: Different motor types are suited for specific applications. Common motor types include AC induction motors, brushless DC motors, brushed DC motors, and stepper motors. Each type has its own advantages and limitations in terms of speed range, torque characteristics, efficiency, control requirements, and cost. Choosing the right motor type depends on the task’s specific requirements and the desired performance.
  3. Power Supply: Consider the available power supply for the motor. Determine whether the application requires AC or DC power and the voltage and frequency range of the power source. Ensure that the motor’s power requirements align with the available power supply to avoid compatibility issues.
  4. Efficiency and Energy Consumption: Efficiency is an important factor to consider, especially for applications where energy consumption is a concern. Higher motor efficiency translates to lower energy losses and reduced operating costs over the motor’s lifetime. Look for motors with high efficiency ratings to minimize energy consumption and improve overall system efficiency.
  5. Environmental Factors: Assess the environmental conditions in which the motor will operate. Consider factors such as temperature, humidity, dust, and vibration. Some motors are specifically designed to withstand harsh environmental conditions, while others may require additional protection or enclosures. Choosing a motor that is suitable for the intended environment will ensure reliable and long-lasting operation.
  6. Control and Feedback Requirements: Determine whether the application requires precise control over motor speed, position, or torque. Some tasks may benefit from closed-loop control systems that incorporate feedback devices like encoders or sensors to provide accurate motor control. Evaluate the control and feedback requirements of the task and select a motor that is compatible with the desired control mechanism.
  7. Physical Constraints: Consider any physical constraints or limitations that may impact motor selection. These constraints may include space restrictions, weight limitations, mounting options, and mechanical compatibility with other components or equipment. Ensure that the chosen motor can physically fit and integrate into the system without compromising performance or functionality.
  8. Cost and Budget: Finally, consider the budget and cost constraints associated with the motor selection. Evaluate the initial purchase cost of the motor as well as the long-term operating costs, including maintenance and energy consumption. Strive to strike a balance between performance and cost-effectiveness to ensure the best value for your specific application.

By considering these factors, you can make an informed decision when selecting the right electric motor for a task. It is crucial to thoroughly analyze the requirements and match them with the motor’s specifications to achieve optimal performance, reliability, and efficiency.

electric motor

Can electric motors be used in renewable energy systems like wind turbines?

Yes, electric motors can be used in renewable energy systems like wind turbines. In fact, electric motors play a crucial role in converting the kinetic energy of the wind into electrical energy in wind turbines. Here’s a detailed explanation of how electric motors are utilized in wind turbines and their role in renewable energy systems:

Wind turbines are designed to capture the energy from the wind and convert it into electrical power. Electric motors are used in wind turbines to drive the rotation of the turbine blades and generate electricity through the following process:

  1. Wind Capture: The wind turbine blades are designed to efficiently capture the kinetic energy of the wind. As the wind blows, it causes the blades to rotate.
  2. Blade Rotation: The rotational motion of the turbine blades is achieved through electric motors known as pitch motors. Pitch motors adjust the angle or pitch of the blades to optimize their orientation relative to the wind direction. The electric motors drive the mechanical mechanism that rotates the blades, allowing them to capture the maximum energy from the wind.
  3. Power Generation: The rotation of the wind turbine blades drives the main shaft of the turbine, which is connected to an electric generator. The generator consists of another electric motor known as the generator motor or generator rotor. The rotational motion of the generator rotor within a magnetic field induces an electrical current in the generator’s stator windings, producing electricity.
  4. Power Conversion and Distribution: The electricity generated by the wind turbine’s generator motor is typically in the form of alternating current (AC). To make it compatible with the electrical grid or local power system, the AC power is converted to the appropriate voltage and frequency using power electronics such as inverters. These power electronics may also incorporate electric motors for various conversion and control functions.
  5. Integration with Renewable Energy Systems: Wind turbines, equipped with electric motors, are integrated into renewable energy systems to contribute to the generation of clean and sustainable power. Multiple wind turbines can be connected together to form wind farms, which collectively generate significant amounts of electricity. The electricity produced by wind turbines can be fed into the electrical grid, used to power local communities, or stored in energy storage systems for later use.

Electric motors in wind turbines enable the efficient conversion of wind energy into electrical energy, making wind power a viable and renewable energy source. The advancements in motor and generator technologies, along with control systems and power electronics, have enhanced the performance, reliability, and overall efficiency of wind turbines. Additionally, electric motors allow for precise control and adjustment of the turbine blades, optimizing the energy capture and minimizing the impact of varying wind conditions.

Overall, the use of electric motors in wind turbines is instrumental in harnessing the power of wind and contributing to the generation of clean and sustainable energy in renewable energy systems.

electric motor

What are the different types of electric motors available?

There are various types of electric motors available, each designed for specific applications and operating principles. These motors differ in their construction, power sources, and performance characteristics. Here is an overview of some common types of electric motors:

  1. DC Motors: DC (Direct Current) motors are widely used and come in different configurations. The most common types include brushed DC motors and brushless DC motors. Brushed DC motors use brushes and a commutator to switch the direction of current in the rotor, while brushless DC motors use electronic commutation. DC motors offer good speed control and torque characteristics, making them suitable for applications like robotics, electric vehicles, and small appliances.
  2. AC Motors: AC (Alternating Current) motors are classified into several types, including induction motors, synchronous motors, and universal motors. Induction motors are popular for their simplicity and reliability. They operate based on electromagnetic induction and are commonly used in industrial and residential applications. Synchronous motors operate at a constant speed and are often used in applications that require precise control, such as industrial machinery and synchronous clocks. Universal motors are designed to operate on both AC and DC power sources and are commonly found in household appliances like vacuum cleaners and power tools.
  3. Stepper Motors: Stepper motors are designed to move in discrete steps or increments, making them suitable for applications that require precise positioning. They are often used in robotics, 3D printers, CNC machines, and other automated systems. Stepper motors are available in various configurations, including permanent magnet stepper motors, variable reluctance stepper motors, and hybrid stepper motors.
  4. Servo Motors: Servo motors are a type of motor that combines a DC motor with a feedback control mechanism. They are known for their precise control over position, velocity, and acceleration. Servo motors are commonly used in robotics, industrial automation, and applications that require accurate motion control, such as robotic arms, RC vehicles, and camera gimbals.
  5. Linear Motors: Linear motors are designed to produce linear motion instead of rotational motion. They operate on similar principles as rotary motors but with a different mechanical arrangement. Linear motors find applications in high-speed transportation systems, cutting machines, and other systems that require linear motion without the need for mechanical conversion from rotary to linear motion.
  6. Haptic Motors: Haptic motors, also known as vibration motors, are small motors used to create tactile feedback or vibrations in electronic devices. They are commonly found in smartphones, game controllers, wearable devices, and other gadgets that require haptic feedback to enhance the user experience.

These are just a few examples of the different types of electric motors available. Each type has its own advantages, limitations, and specific applications. The selection of an electric motor depends on factors such as the required torque, speed, control, efficiency, and the specific needs of the application at hand.

China supplier 7mm Diameter Custom Torque Micro Electric DC Brush Vibration Motor   vacuum pump adapter	China supplier 7mm Diameter Custom Torque Micro Electric DC Brush Vibration Motor   vacuum pump adapter
editor by CX 2024-05-15

China wholesaler Full Series NEMA 11 14 17 23 24 34 42 Outboard Boat Servo DC Electric Hybrid Micro Gear Stepper Motor/Step/Stepping Motor with Reducer, Encoder vacuum pump distributors

Product Description

57 Closed-loop Stepper Motor

 We are a company specializing in the R&D, production and sales of brushless motors, stepper motors, DC motors.  Through technical innovation and customization, we help you create outstanding application systems and provide flexible solutions for various industrial automation situations.

Product Description

57 Closed-loop Stepper Motor:

Projects Specifications
Temperature Rise under 80K
Resistance Accuracy ±10%
Inductance Accuracy ±20%
Ambient Temperature Range -10~ + 50°C
Ambient Humidity Range 20%RH – 90%RH
Insulation Resistance 100MΩMin.@500VDC
Insulation Class Class B 130°
Step Angle Accuracy ±5%
Shaft Radial Play 0.06Max.(450g-load)
Shaft Axial Runout 0.08Max.(450g-load)

57 Closed-loop Stepper Motor Parameters:

Model Current Resistance Inductance Rotational Inertia Holding torque Body Length Weight
A Ω mH g.cm2 N.M mm kg
57BHS78-D0821 3 0.7 3.6 200 1.2 78 0.9
57BHS98-D0821 4 1 4.4 480 2 98 1.35
57BHS122-D0821 4 1.2 1.1 550 2.8 122 1.85
57BHS134-D0821 4 1.5 2.8 600 3.2 134 1.95

Note: The above are standard parameters. Motor can be customized, brake ready, can be equipped with reducer, encoder and other devices.

Detailed Photos

57 Closed-loop Stepper Motor Photos:

Our Service:
1). General Service:

Quick Reply

All enquiry or email be replied in 12 hours, no delay for your business.

Professional Team

Questions about products will be replied professionally, exactly, best advice to you.

Short Lead time

Sample or small order sent in 7-15 days, bulk or customized order about 30 days.

Payment Choice

T/T, Western Union,, L/C, etc, easy for your business.

Before shipment

Take photos, send to customers for confirmation. Only confirmed, can be shipped out.

Language Choice

Besides English, you can use your own language by email, then we can translate it.

2). Customization Service:

Motor specification(no-load speed , voltage, torque , diameter, noise, life, testing) and shaft length can be tailor-made according to customer’s requirements.

Other Product Parameters

20 Series screw stepper Motor 1.8°(8H series) 

Model Current Resistance Inductance Rotational Inertia Holding torque| Body Length Weight
  A o mH g.cm2 N.M mm kg
20HS28-0504TS 0.5 14.3 8.o 1.6 0.018 28 0.05
2oHs30-0504Ts 0.5 11.5 1.7 1.8 0.02 30 0.06
20Hs33-0604TS 0.6 6.5 2.2 20 0.571 33 0.07
20Hs38-0604TS 0.6 10 5.5 3.2 0.044 38 0.08

28 Series screw stepper Motor 1.8°(11H series) 

Model Current Resistance Inductance Rotational Inertia Holding torque| Body Length Weight
  A o mH g.cm2 N.M mm kg
28HS32-0704Ts 0.7 5.6 3.4 9 o.09 32 0.11
28HS40-1004TS 1.o 4.1 3.1 11 0.13 40 0.13
28HS45-1004TS 1 3.8 3.3 12 0.15 45 0.14
28HS51-1004Ts 1 4.3 3.9 18 0.18 51 0.2

42HS Series step motor/stepping motor/stepper motor 1.8°(17H Series )

Model Current Resistance Inductance Rotational Inertia Holding torque Body Length Weight
  A o mH g.cm2 N.M mm kg
42HS34-1504 1.5 2.1 4.2 35 0.25 34 0.22
42HS40-1704 1.7 1.65 4.o 54 0.45 40 0.28
42HS48-1704 1.7 1.65 4.1 68 0.55 48 0.35
42HS60-1704 1.7 3 6 80 0.7 60 0.48

 42 Series screw stepper Motor 1.8°(17H series)

Model Current Resistance Inductance Rotational Inertia Holding torque| Body Length Weight
  A 2 mH g.cm2 N.M mm kg
42HS34-1504TS 1.5 2.1 4.2 35 0.25 34 0.22
42HS40-1704TS 1.7 1.65 4 54 0.45 40 0.28
42HS48-1704TS 1.7 1.65 4.1 68 0.55 48 0.35
42HS60-1704TS 1.7 3 6 80 0.70 60 0.48

 57 Series Stepper Motor 1.8°(23H series) 

Model Current Resistance Inductance Rotational Inertia Holding torque Body Length Weight
  A o mH g.cm2 N.M mm kg
57HS56-3004 3 0.7 3.6 200 1.2 56 0.7
57Hs76-4004 4 1.0 4.4 480 2 76 1.15
57Hs100-4004 4 1.2 1.1 550 2.8 100 1.65
57HS112-4004 4 1.5 2.8 600 3.2 112 1.75

 86 Series Stepper Motor 1.8°(34H series) 

Model Current Resistance Inductance Rotational Inertia Holding torque| Body Length Weight
  A o mH g.cm2 N.M mm kg
86Hs80-5004 5 0.65 7 1600 4.5 76 2.4
86HS10o-6004 6 0.50 11.6 2200 6.5 100 3.2
86HS118-6004 6 0.60 3.4 3200 8.5 118 4
86HS150-6004 6 0.7 6.3 4800 12 150 5.5

Application Area

Product Recommendation


Stepper motor Brushless motor Synchronous motor


Company Profile

HangZhou Sino-pan Electric Co., Ltd. is an export-oriented enterprise. Located in Xihu (West Lake) Dis. District, HangZhou City, ZheJiang Province, China. After years of operation, the scale of our enterprise has continued to expand. Gradually grow into a group company. At present, our company mainly produces automotive bulbs (such as halogen bulbs and automotive LED bulbs/as well as household LEDs and commercial LEDs), motors (brushless motors/stepping motors/synchronous motors/asynchronous motors). At the same time, we are also appointed by many clients as purchasing and quality inspection agents in China.

We provide you with high-quality, fast, efficient and inexpensive automotive lighting, motors and auxiliary electrical services. Zhongpan welcomes your patronage with a sHangZhou, and we will provide you with a variety of satisfactory products and a full range of consulting services. We firmly believe that the cooperation with us will be infinitely better! Strive to create a stronger tomorrow for our customers!


Packaging & Shipping



Q1. Can I provide sample orders for your products?
A: Of course, you can check our quality before ordering. If you have any requirements, please contact us.

Q2. What is your delivery time?
A: It depends on the order quantity. Usually, it takes about 3-7 days after receiving the small deposit. Bulk ordering takes 10-20 days.

Q3. What kind of customers and what kind of companies do you work with?
A: We have 20 years of export experience and serve more than 100 customers, such as retailers, wholesalers, and online store owners.

Q4. Is it possible to put our logo on your product or product packaging?
A: Of course, we have a factory, welcome to customize your brand, LOGO, color, product manual, packaging, etc. 

Q5: Can you OEM for me?
A: We accept all OEM orders, just contact us and give me your design. We will provide you with a reasonable price and make samples for you as soon as possible. 

Q6: What are your payment terms?
A: According to T/T, LC AT SIGHT, 30% deposit in advance, and the balance 70% before shipment.



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Application: Industrial, Machine Tool, Universal
Speed: Variable Speed
Number of Stator: 2 Phase, 3 Phase, 4phase


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Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

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

electric motor

What maintenance practices are essential for prolonging the lifespan of an electric motor?

Maintaining electric motors is crucial for prolonging their lifespan and ensuring optimal performance. Proper maintenance practices help prevent failures, minimize downtime, and maximize the efficiency and reliability of electric motors. Here’s a detailed explanation of essential maintenance practices for prolonging the lifespan of an electric motor:

  1. Regular Inspections: Conduct regular visual inspections of the motor to identify any signs of wear, damage, or loose connections. Inspect the motor’s external components, such as the housing, bearings, cooling fans, and cables. Look for any unusual noise, vibration, or overheating during operation, as these can indicate potential issues that require attention.
  2. Lubrication: Proper lubrication is vital for the smooth operation and longevity of electric motors. Follow the manufacturer’s guidelines for lubrication intervals and use the recommended lubricants. Apply lubrication to bearings, shafts, and other moving parts as specified. Over-lubrication or using incompatible lubricants can cause overheating and premature wear, so it’s essential to follow the recommended practices.
  3. Cleaning: Keep the motor clean and free from dirt, dust, and debris that can accumulate over time. Regularly clean the motor’s exterior using a soft brush or compressed air. Ensure that cooling vents and fans are clear of any obstructions to maintain proper airflow and prevent overheating. Cleanliness helps prevent insulation damage and improves heat dissipation.
  4. Alignment and Balance: Misalignment or imbalance in the motor’s shaft and coupling can lead to excessive vibrations and premature wear. Regularly check and correct any misalignment or imbalance issues using precision alignment tools. Proper alignment and balance reduce stress on bearings and extend their lifespan, contributing to the overall longevity of the motor.
  5. Temperature Monitoring: Monitor the motor’s temperature during operation using temperature sensors or thermal imaging techniques. Excessive heat can damage insulation, bearings, and other components. If the motor consistently operates at high temperatures, investigate the cause and take corrective actions, such as improving ventilation, reducing loads, or addressing any cooling system issues.
  6. Electrical Connections: Inspect and tighten electrical connections regularly to ensure secure and reliable connections. Loose or corroded connections can lead to voltage drops, increased resistance, and overheating. Check terminal blocks, wiring, and motor leads for any signs of damage or degradation. Properly torquing electrical connections and addressing any issues promptly helps maintain electrical integrity.
  7. Vibration Analysis: Perform regular vibration analysis to detect any abnormal vibration patterns that could indicate underlying issues. Vibration analysis tools and techniques can help identify unbalanced rotors, misalignment, bearing wear, or other mechanical problems. Addressing vibration issues early can prevent further damage and improve motor performance and longevity.
  8. Periodic Testing and Maintenance: Conduct periodic testing and maintenance based on the manufacturer’s recommendations and industry best practices. This may include insulation resistance testing, winding resistance testing, bearing lubrication checks, and other diagnostic tests. Such tests help identify potential problems before they escalate and allow for timely maintenance and repairs.
  9. Training and Documentation: Ensure that maintenance personnel are properly trained in electric motor maintenance practices. Provide training on inspection techniques, lubrication procedures, alignment methods, and other essential maintenance tasks. Maintain comprehensive documentation of maintenance activities, including inspection reports, maintenance schedules, and repair records.

By implementing these maintenance practices, motor owners can significantly prolong the lifespan of electric motors. Regular inspections, proper lubrication, cleaning, alignment, temperature monitoring, electrical connection maintenance, vibration analysis, periodic testing, and training contribute to the motor’s reliability, efficiency, and overall longevity.

electric motor

How do electric motors handle variations in voltage and frequency?

Electric motors are designed to handle variations in voltage and frequency to ensure proper operation and performance. The ability of electric motors to adapt to different voltage and frequency conditions depends on their design characteristics and the presence of additional control devices. Here’s a detailed explanation of how electric motors handle variations in voltage and frequency:

  1. Voltage Variations: Electric motors can handle certain variations in voltage without significant issues. The motor’s design factors in a voltage tolerance range to accommodate fluctuations in the power supply. However, excessive voltage variations beyond the motor’s tolerance can affect its performance and lead to problems such as overheating, increased energy consumption, and premature failure. To mitigate the impact of voltage variations, electric motors may incorporate the following features:
    • Voltage Regulation: Some electric motors, especially those used in industrial applications, may include voltage regulation mechanisms. These mechanisms help stabilize the motor’s voltage, compensating for slight voltage fluctuations and maintaining a relatively steady supply.
    • Voltage Protection Devices: Motor control circuits often incorporate protective devices such as voltage surge suppressors and voltage regulators. These devices help prevent voltage spikes and transient voltage variations from reaching the motor, safeguarding it against potential damage.
    • Voltage Monitoring: In certain applications, voltage monitoring systems may be employed to continuously monitor the motor’s supply voltage. If voltage variations exceed acceptable limits, the monitoring system can trigger alarms or take corrective actions, such as shutting down the motor to prevent damage.
  2. Frequency Variations: Electric motors are designed to operate at a specific frequency, typically 50 or 60 Hz, depending on the region. However, variations in the power system frequency can occur due to factors such as grid conditions or the use of frequency converters. Electric motors handle frequency variations in the following ways:
    • Constant Speed Motors: Most standard electric motors are designed for operation at a fixed speed corresponding to the rated frequency. When the frequency deviates from the rated value, the motor’s rotational speed changes proportionally. This can affect the motor’s performance, especially in applications where precise speed control is required.
    • Variable Frequency Drives (VFDs): Variable frequency drives are electronic devices that control the speed of an electric motor by varying the supplied frequency and voltage. VFDs allow electric motors to operate at different speeds and handle frequency variations effectively. By adjusting the frequency and voltage output, VFDs enable precise control of motor speed and torque, making them ideal for applications where speed control and energy efficiency are critical.
    • Inverter Duty Motors: Inverter duty motors are specifically designed to handle the frequency variations encountered when operated with VFDs. These motors feature improved insulation systems and robust designs to withstand the harmonic distortions and voltage spikes associated with VFD operation.
  3. Motor Protection: Electric motors may incorporate protective features to safeguard against adverse effects caused by voltage and frequency variations. These protection mechanisms include:
    • Thermal Protection: Motors often include built-in thermal protection devices such as thermal switches or sensors. These devices monitor the motor’s temperature and can automatically shut it down if it exceeds safe limits due to voltage or frequency variations that lead to excessive heating.
    • Overload Protection: Overload protection devices, such as overload relays, are employed to detect excessive currents drawn by the motor. If voltage or frequency variations cause the motor to draw abnormal currents, the overload protection device can interrupt the power supply to prevent damage.
    • Voltage/Frequency Monitoring: Advanced motor control systems may incorporate voltage and frequency monitoring capabilities. These systems continuously measure and analyze the motor’s supply voltage and frequency, providing real-time feedback on any deviations. If voltage or frequency variations exceed predetermined thresholds, the monitoring system can activate protective actions or trigger alarms for further investigation.

In summary, electric motors handle variations in voltage and frequency through design considerations, additional control devices, and protective mechanisms. Voltage variations are managed through voltage regulation, protective devices, and monitoring systems. Frequency variations can be accommodated by using variable frequency drives (VFDs) or employing inverter duty motors. Motor protection features, such as thermal protection and overload relays, help safeguard the motor against adverse effects caused by voltage and frequency variations. These measures ensure the reliable and efficient operation of electric motors under different voltage and frequency conditions.

electric motor

Can you explain the basic principles of electric motor operation?

An electric motor operates based on several fundamental principles of electromagnetism and electromagnetic induction. These principles govern the conversion of electrical energy into mechanical energy, enabling the motor to generate rotational motion. Here’s a detailed explanation of the basic principles of electric motor operation:

  1. Magnetic Fields: Electric motors utilize magnetic fields to create the forces necessary for rotation. The motor consists of two main components: the stator and the rotor. The stator contains coils of wire wound around a core and is responsible for generating a magnetic field. The rotor, which is connected to the motor’s output shaft, has magnets or electromagnets that produce their own magnetic fields.
  2. Magnetic Field Interaction: When an electric current flows through the coils in the stator, it generates a magnetic field. This magnetic field interacts with the magnetic field produced by the rotor. The interaction between these two magnetic fields results in a rotational force, known as torque, that causes the rotor to rotate.
  3. Electromagnetic Induction: Electric motors can also operate on the principle of electromagnetic induction. In these motors, alternating current (AC) is supplied to the stator coils. The alternating current produces a changing magnetic field that induces a voltage in the rotor. This induced voltage then generates a current in the rotor, which creates its own magnetic field. The interaction between the stator’s magnetic field and the rotor’s magnetic field leads to rotation.
  4. Commutation: In certain types of electric motors, such as brushed DC motors, commutation is employed. Commutation refers to the process of reversing the direction of the current in the rotor’s electromagnets to maintain continuous rotation. This is achieved using a component called a commutator, which periodically switches the direction of the current as the rotor rotates. By reversing the current at the right time, the commutator ensures that the magnetic fields of the stator and the rotor remain properly aligned, resulting in continuous rotation.
  5. Output Shaft: The rotational motion generated by the interaction of magnetic fields is transferred to the motor’s output shaft. The output shaft is connected to the load or the device that needs to be driven, such as a fan, a pump, or a conveyor belt. As the motor rotates, the mechanical energy produced is transmitted through the output shaft, enabling the motor to perform useful work.

In summary, the basic principles of electric motor operation involve the generation and interaction of magnetic fields. By supplying an electric current to the stator and utilizing magnets or electromagnets in the rotor, electric motors create magnetic fields that interact to produce rotational motion. Additionally, the principle of electromagnetic induction allows for the conversion of alternating current into mechanical motion. Commutation, in certain motor types, ensures continuous rotation by reversing the current in the rotor’s electromagnets. The resulting rotational motion is then transferred to the motor’s output shaft to perform mechanical work.

China wholesaler Full Series NEMA 11 14 17 23 24 34 42 Outboard Boat Servo DC Electric Hybrid Micro Gear Stepper Motor/Step/Stepping Motor with Reducer, Encoder   vacuum pump distributorsChina wholesaler Full Series NEMA 11 14 17 23 24 34 42 Outboard Boat Servo DC Electric Hybrid Micro Gear Stepper Motor/Step/Stepping Motor with Reducer, Encoder   vacuum pump distributors
editor by CX 2024-04-04