China high quality 12V Roller Shutter DC Motor Tubular Motor for Blinds with high quality

Product Description


Product Description

item No. JCD28
Rated Torque(N.M) 2
Rated Speed(rpm) 20/24/28
Rated Voltage(V) 12
Rated Power(W) 18
Rated Current(A) 1.5
Weight(Kg) 0.51
Length(mm) 368


Company Profile


Q:What is the shipping port?
A:ZheJiang or HangZhou Port.

Q:How can I get the quotation?
A:You need to send up information, we will let our regional sales to contact with you, and the details you should to give: email
address, telephone number, material, size, input, Load capacity, quantity, color, speed or frequency, etc.

Q:May I have a sample order before bulk one?
A:Of course, we can provide a sample for you.

Q:Do you get the relevant certifications?
A:Yes, so far, we have got certification of CE,TUV, UL, PSE, KC, SAA, ROSH,ISO9001:2015,ISO14001:2015,OHSAS18001:2007 and so on. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Application: Power Tools
Operating Speed: Low Speed
Excitation Mode: Excited
Function: Control
Casing Protection: Closed Type
Number of Poles: 2
US$ 59/Piece
1 Piece(Min.Order)




dc motor

How does the speed control of a DC motor work, and what methods are commonly employed?

The speed control of a DC (Direct Current) motor is essential for achieving precise control over its rotational speed. Various methods can be employed to regulate the speed of a DC motor, depending on the specific application requirements. Here’s a detailed explanation of how speed control of a DC motor works and the commonly employed methods:

1. Voltage Control:

One of the simplest methods to control the speed of a DC motor is by varying the applied voltage. By adjusting the voltage supplied to the motor, the electromotive force (EMF) induced in the armature windings can be controlled. According to the principle of electromagnetic induction, the speed of the motor is inversely proportional to the applied voltage. Therefore, reducing the voltage decreases the speed, while increasing the voltage increases the speed. This method is commonly used in applications where a simple and inexpensive speed control mechanism is required.

2. Armature Resistance Control:

Another method to control the speed of a DC motor is by varying the armature resistance. By inserting an external resistance in series with the armature windings, the total resistance in the circuit increases. This increase in resistance reduces the armature current, thereby reducing the motor’s speed. Conversely, reducing the resistance increases the armature current and the motor’s speed. However, this method results in significant power loss and reduced motor efficiency due to the dissipation of excess energy as heat in the external resistance.

3. Field Flux Control:

Speed control can also be achieved by controlling the magnetic field strength of the motor’s stator. By altering the field flux, the interaction between the armature current and the magnetic field changes, affecting the motor’s speed. This method can be accomplished by adjusting the field current through the field windings using a field rheostat or by employing a separate power supply for the field windings. By increasing or decreasing the field flux, the speed of the motor can be adjusted accordingly. This method offers good speed regulation and efficiency but requires additional control circuitry.

4. Pulse Width Modulation (PWM):

Pulse Width Modulation is a widely used technique for speed control in DC motors. It involves rapidly switching the applied voltage on and off at a high frequency. The duty cycle, which represents the percentage of time the voltage is on, is varied to control the effective voltage applied to the motor. By adjusting the duty cycle, the average voltage across the motor is modified, thereby controlling its speed. PWM provides precise speed control, high efficiency, and low power dissipation. It is commonly employed in applications such as robotics, industrial automation, and electric vehicles.

5. Closed-Loop Control:

In closed-loop control systems, feedback from the motor’s speed or other relevant parameters is used to regulate the speed. Sensors such as encoders or tachometers measure the motor’s actual speed, which is compared to the desired speed. The difference, known as the error signal, is fed into a control algorithm that adjusts the motor’s input voltage or other control parameters to minimize the error and maintain the desired speed. Closed-loop control provides excellent speed regulation and accuracy, making it suitable for applications that require precise speed control, such as robotics and CNC machines.

These methods of speed control provide flexibility and adaptability to various applications, allowing DC motors to be effectively utilized in a wide range of industries and systems.

dc motor

Are there specific types of DC motors designed for different industries or applications?

Yes, there are specific types of DC (Direct Current) motors that are designed and optimized for various industries and applications. DC motors offer a wide range of performance characteristics, allowing them to be tailored to specific requirements. Here’s a detailed explanation of the types of DC motors designed for different industries or applications:

1. Brushed DC Motors:

Brushed DC motors are commonly used in applications that require simple and cost-effective motor solutions. They are suitable for applications with lower efficiency requirements and where maintenance considerations are manageable. Some common industries and applications that use brushed DC motors include:

  • Automotive: Power window mechanisms, windshield wipers, cooling fans, and seat adjustment systems.
  • Consumer Electronics: Household appliances, toys, power tools, and personal care devices.
  • Industrial Machinery: Conveyors, pumps, fans, and machine tools.

2. Brushless DC Motors:

Brushless DC motors are known for their higher efficiency, greater reliability, and precise control capabilities. They are widely used in industries and applications that demand higher performance and advanced control features. Some specific industries and applications that utilize brushless DC motors include:

  • Automotive: Electric power steering systems, electric vehicles, hybrid vehicles, and HVAC systems.
  • Aerospace and Defense: Actuators, robotics, unmanned aerial vehicles (UAVs), and missile systems.
  • Medical and Laboratory Equipment: Centrifuges, pumps, robotics, and diagnostic devices.
  • Industrial Automation: CNC machines, robotics, automated guided vehicles (AGVs), and precision motion control systems.
  • Renewable Energy: Wind turbine generators, solar tracking systems, and energy storage systems.

3. High-Torque DC Motors:

High-torque DC motors are designed to provide substantial torque output at low speeds. They are commonly used in applications that require heavy lifting or high starting torque. Industries and applications that often utilize high-torque DC motors include:

  • Material Handling: Cranes, hoists, winches, lifts, and elevators.
  • Construction and Mining: Excavators, bulldozers, drilling rigs, and conveyor systems.
  • Automotive: Electric vehicles, electric powertrains, and traction control systems.
  • Marine and Shipbuilding: Thrusters, winches, and anchor handling systems.

4. Low-Voltage DC Motors:

Low-voltage DC motors are designed to operate at lower voltages, typically below 24 volts. They are commonly used in battery-powered applications and systems where safety or specific voltage requirements exist. Some industries and applications that utilize low-voltage DC motors include:

  • Automotive: Automotive accessories, window actuators, and door locks.
  • Robotics and Hobbyist Projects: DIY robots, RC vehicles, and model trains.
  • Solar Power Systems: Solar tracking systems, solar panel actuators, and solar-powered water pumps.
  • Home Automation: Automated blinds, curtains, and smart home devices.

These are just a few examples of the types of DC motors designed for different industries and applications. The versatility and adaptability of DC motors make them suitable for a wide range of uses, and manufacturers often offer customized motor solutions to meet specific requirements.

dc motor

What are the environmental implications of using DC motors, particularly in green technologies?

DC (Direct Current) motors offer several environmental benefits when used in green technologies. Their characteristics and operational advantages contribute to reducing environmental impact compared to other motor types. Here’s a detailed explanation of the environmental implications of using DC motors, particularly in green technologies:

1. Energy Efficiency:

DC motors are known for their high energy efficiency. Compared to AC (Alternating Current) motors, DC motors generally have lower energy losses and can convert a larger proportion of electrical input power into mechanical output power. This increased efficiency results in reduced energy consumption, leading to lower greenhouse gas emissions and decreased reliance on fossil fuels for electricity generation.

2. Renewable Energy Integration:

DC motors are well-suited for integration with renewable energy sources. Many green technologies, such as solar photovoltaic systems and wind turbines, produce DC power. By utilizing DC motors directly in these systems, the need for power conversion from DC to AC can be minimized, reducing energy losses associated with conversion processes. This integration improves the overall system efficiency and contributes to a more sustainable energy infrastructure.

3. Battery-Powered Applications:

DC motors are commonly used in battery-powered applications, such as electric vehicles and portable devices. The efficiency of DC motors ensures optimal utilization of the limited energy stored in batteries, resulting in extended battery life and reduced energy waste. By utilizing DC motors in these applications, the environmental impact of fossil fuel consumption for transportation and energy storage is reduced.

4. Reduced Emissions:

DC motors, especially brushless DC motors, produce fewer emissions compared to internal combustion engines or motors that rely on fossil fuels. By using DC motors in green technologies, such as electric vehicles or electrically powered equipment, the emission of greenhouse gases and air pollutants associated with traditional combustion engines is significantly reduced. This contributes to improved air quality and a reduction in overall carbon footprint.

5. Noise Reduction:

DC motors generally operate with lower noise levels compared to some other motor types. The absence of brushes in brushless DC motors and the smoother operation of DC motor designs contribute to reduced noise emissions. This is particularly beneficial in green technologies like electric vehicles or renewable energy systems, where quieter operation enhances user comfort and minimizes noise pollution in residential or urban areas.

6. Recycling and End-of-Life Considerations:

DC motors, like many electrical devices, can be recycled at the end of their operational life. The materials used in DC motors, such as copper, aluminum, and various magnets, can be recovered and reused, reducing the demand for new raw materials and minimizing waste. Proper recycling and disposal practices ensure that the environmental impact of DC motors is further mitigated.

The use of DC motors in green technologies offers several environmental benefits, including increased energy efficiency, integration with renewable energy sources, reduced emissions, noise reduction, and the potential for recycling and end-of-life considerations. These characteristics make DC motors a favorable choice for sustainable and environmentally conscious applications, contributing to the transition to a greener and more sustainable future.

China high quality 12V Roller Shutter DC Motor Tubular Motor for Blinds   with high quality China high quality 12V Roller Shutter DC Motor Tubular Motor for Blinds   with high quality
editor by CX 2024-05-16


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