China Hot selling AC/DC 300kg Rolling Door Side Motors Roller Shutter Motor Price with Great quality

Product Description


Model Power(W) Max lifting capacity (kg) Output Torque(N.m) Rated Current (A) Large Sprocket Speed  (r/min) Continuous Working time      (min) Chain No
DJM300-1P 250 300 168 3.3 5.2 7-8 08B
DJM300-3P 180 300 168 1.2 5.2 7-8 08B
DJM500-1P 370 500 343 3.9 6.2 7-8 10A
DJM500-3P 250 500 343 1.3 6.2 7-8 10A
DJM600-1P 370 600 412 3.9 5.2 7-8 10A
DJM600-3P 250 600 412 1.2 5.2 7-8 10A
DJM800-1P 400 800 647 4.5 3.4 7-8 10A
DJM800-3P 300 800 647 2.0  3.4 7-8 10A
DJM1000-3P 400 1000 1102 2.3 6.5 7-8 12A
DJM1300-3P 600 1300 1372 3.0  6.5 7-8 12A
DJM1500-3P 600 1500 1610 3.2 5.7 7-8 16A
DJM2000-3P 750 2000 1610 4.1 5.7 7-8 16A
300KG-DC24V 200 300 168 14 4.7 7-8 08B
600KG-DC24V 220 600 412 16 4.7 7-8 10A
800KG-DC24V 300 800 647 18 4.7 7-8 10A


1. Rolling shutter opened and closed by the power-driven operation.

2. Limited switch can keep precise adjustment of door up and down.

3. Equipped with a backup battery, it works when the power off.

4. Overheat protection will start when overloaded.

5. Quite easy installation, low noise and small power consumption.  

6. It is with Reserved Power Function.

INSTALLATION SUGGESTION:

Installation Instructions

1. The roller shutter door motors should be installed exactly horizontally with precision.The roller
axle of the shutter should be homo centric and horizontal .
2. The roller shutter should be free of any obstructions.
3. The vertical hanging length of the chain must be adjusted within 3-6mm-adjustment should be
made before hanging the shutter CHINAMFG the roller axis.
4. It is strictly forbidden to pull on the motor down lead.
5. The switch box has to be installed on the dry wall and placed at a high of over 1.5 CHINAMFG high,
this is to ensure that children cannot operate the wall switch and remote controller.
6. The disabled and the people lacking of experience (including the children) are forbidden to
operate the shutter door motors,unless they are guarded by someone can respons for their safety
or reading the instructions carefully in advance.

PACKING:

Packaging & Shipping

 



Q: Are you a manufacture?
A: Yes, we have our own factory which have more than 200 workers who focus on producting electri rolling door motor for
10 years.

Q: How about your quality control?
A:Each motor with quality control (testing) before packing.IQC,IPQC,PQC,FQC,all are tested.One year quality warranty.

Q: What about Minimal order quantity?
A:No MOQ,one set of sample is available.Advice deliver by Express such as DHL,FEDEX, TNT. etc.

Q: Can you do OEM for me?
OEM order is welcome,please contact us with your requirements, we will offer you a reasonable price and make sample for
you asap.

Q: Can you supply me sample?
Yes,we would like to supply you a sample for your QC testing. And you just need to bear the sample cost and shipping fee.
But we would like to return the cost back if you have a real order to us in the future.

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After-sales Service: Lifetime Technique Support
Warranty: 12months
Driving Type: Electromechanical
Samples:
US$ 100/Set
1 Set(Min.Order)

|

Order Sample

Customization:
Available

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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.

dc motor

What is a DC motor, and how does it differ from other types of electric motors?

A DC (Direct Current) motor is an electric motor that converts electrical energy into mechanical motion. It operates based on the principle of electromagnetic induction and the interaction between current-carrying conductors and magnetic fields. DC motors are widely used in various applications due to their simplicity, controllability, and versatility. Here’s a detailed explanation of what a DC motor is and how it differs from other types of electric motors:

1. Basic Operation:

In a DC motor, electrical energy is supplied to the motor’s armature through a DC power source, typically a battery or a rectified power supply. The armature consists of multiple coils or windings that are evenly spaced around the motor’s rotor. The rotor is a cylindrical core with a shaft that rotates when the motor is energized. When current flows through the armature windings, it creates a magnetic field that interacts with the fixed magnetic field produced by the motor’s stator. This interaction generates a torque, causing the rotor to rotate.

2. Commutation:

DC motors employ a commutator and brushes for the conversion of electrical energy and the rotation of the rotor. The commutator consists of a segmented cylindrical ring attached to the rotor shaft, and the brushes are stationary conductive contacts that make contact with the commutator segments. As the rotor spins, the brushes maintain contact with the commutator segments, periodically reversing the direction of the current flow in the armature windings. This reversal of current flow in the armature windings ensures continuous rotation of the rotor in the same direction.

3. Types of DC Motors:

DC motors can be classified into different types based on their construction and the method of field excitation. The two main types are:

  • Brushed DC Motors: Brushed DC motors have a mechanical commutator and brushes to switch the current direction in the armature windings. These motors are relatively simple, cost-effective, and offer good torque characteristics. However, the commutator and brushes require regular maintenance and can generate electrical noise and brush wear debris.
  • Brushless DC Motors (BLDC): Brushless DC motors, also known as electronically commutated motors (ECMs), use electronic circuits and sensors to control the current flow in the motor windings. They eliminate the need for brushes and commutators, resulting in reduced maintenance and improved reliability. BLDC motors offer higher efficiency, smoother operation, and better speed control compared to brushed DC motors.

4. Speed Control:

DC motors provide excellent speed control capabilities. By adjusting the voltage applied to the motor, the speed of the DC motor can be regulated. Lowering the voltage reduces the motor’s speed, while increasing the voltage increases the speed. This feature makes DC motors suitable for applications that require precise speed control, such as robotics, conveyor systems, and electric vehicles.

5. Advantages and Disadvantages:

DC motors have several advantages, including:

  • Simple construction and easy maintenance (for brushed DC motors).
  • High starting torque.
  • Precise speed control.
  • Good controllability over a wide range of loads.

However, DC motors also have some limitations, such as:

  • Brushed DC motors require periodic maintenance and have limited brush life.
  • Brushed DC motors can generate electrical noise.
  • Brushless DC motors are often more expensive compared to brushed DC motors.

6. Differences from Other Electric Motors:

DC motors differ from other types of electric motors, such as AC (Alternating Current) motors, in several ways:

  • Power Source: DC motors require a DC power source, while AC motors operate from an AC power supply.
  • Speed Control: DC motors offer precise speed control by adjusting the applied voltage, whereas AC motors typically rely on frequency control for speed regulation.
  • Construction: DC motors use a commutator and brushes (in brushed DC motors) or electronic commutation (in brushless DC motors), while AC motors do not require commutation.
  • Starting Torque: DC motors typically provide higher starting torque compared to AC motors.

Overall, DC motors are versatile and widely used in various applications due to their controllability, speed regulation capabilities, and simplicity. The advancements inpower electronics and motor control technologies have further enhanced the performance and efficiency of DC motors, making them a popular choice in many industries.

dc motor

What is the significance of back EMF (electromotive force) in DC motor performance?

The significance of back EMF (electromotive force) in DC motor performance is crucial to understanding the behavior and operation of DC motors. Back EMF is an inherent characteristic of DC motors and plays a pivotal role in their efficiency, speed regulation, and overall performance. Here’s a detailed explanation of the significance of back EMF in DC motor performance:

When a DC motor operates, it generates a voltage known as back EMF or counter electromotive force. This voltage opposes the applied voltage and is caused by the rotation of the motor’s armature within the magnetic field. The back EMF is directly proportional to the rotational speed of the motor.

The significance of back EMF can be understood through the following aspects:

1. Speed Regulation:

Back EMF is crucial for regulating the speed of a DC motor. As the motor rotates faster, the back EMF increases, which reduces the effective voltage across the motor’s armature. Consequently, the armature current decreases, limiting the motor’s speed. This self-regulating characteristic helps maintain a relatively constant speed under varying load conditions. It allows the motor to deliver the required torque while preventing excessive speed that can potentially damage the motor or the driven equipment.

2. Efficiency:

Back EMF plays a significant role in the efficiency of a DC motor. When the motor is loaded and drawing current, the power supplied to the motor is the product of the armature current and the applied voltage. However, the electrical power converted into mechanical power is reduced by the power consumed by the back EMF. The back EMF represents the energy returned to the power supply as the motor generates its own voltage. By reducing the effective voltage across the motor, it helps minimize power losses due to electrical resistance and improves the overall efficiency of the motor.

3. Motor Protection:

The presence of back EMF also provides a level of protection to the motor. When a DC motor is operating and the load on the motor suddenly decreases, such as when the driven equipment is disconnected, the motor’s speed can increase rapidly. This increase in speed leads to a higher back EMF, which reduces the armature current and prevents excessive current flow. By limiting the current, the back EMF helps protect the motor from overloading and potential damage.

4. Voltage Regulation:

Back EMF affects the voltage regulation in a DC motor. When the motor is operating, the back EMF opposes the applied voltage. As the motor load increases, the voltage drop across the armature resistance and other internal losses also increase. The back EMF helps compensate for these voltage drops, ensuring that the motor receives an adequate voltage to maintain its performance and torque output.

5. Control and Dynamic Response:

Back EMF provides valuable information for motor control and dynamic response. By measuring the back EMF voltage, the rotational speed of the motor can be estimated, allowing for precise speed control and feedback. This information is crucial for applications that require accurate speed regulation, such as robotics or industrial automation.

In summary, the significance of back EMF in DC motor performance cannot be overstated. It influences speed regulation, efficiency, motor protection, voltage regulation, and control capabilities. By understanding and utilizing the inherent characteristics of back EMF, engineers can design and optimize DC motor systems for various applications, ensuring reliable and efficient operation.

dc motor

Are there safety considerations or maintenance practices associated with DC motors?

Yes, there are safety considerations and maintenance practices associated with DC (Direct Current) motors. DC motors, like any other electrical equipment, require proper handling, maintenance, and adherence to safety guidelines to ensure safe operation and longevity. Here’s a detailed explanation of the safety considerations and maintenance practices associated with DC motors:

Safety Considerations:

Electrical Hazards: DC motors operate with high voltages and currents, posing electrical hazards. It is essential to follow proper electrical safety practices, such as wearing appropriate personal protective equipment (PPE) and ensuring that electrical connections are secure and insulated. Proper grounding and isolation techniques should be employed to prevent electrical shocks and accidents.

Lockout/Tagout: DC motors, especially in industrial settings, may require maintenance or repair work. It is crucial to implement lockout/tagout procedures to isolate the motor from its power source before performing any maintenance or servicing activities. This ensures that the motor cannot be accidentally energized during work, preventing potential injuries or accidents.

Overheating and Ventilation: DC motors can generate heat during operation. Adequate ventilation and cooling measures should be implemented to prevent overheating, as excessive heat can lead to motor damage or fire hazards. Proper airflow and ventilation around the motor should be maintained, and any obstructions or debris should be cleared.

Mechanical Hazards: DC motors often have rotating parts and shafts. Safety guards or enclosures should be installed to prevent accidental contact with moving components, mitigating the risk of injuries. Operators and maintenance personnel should be trained to handle motors safely and avoid placing their hands or clothing near rotating parts while the motor is running.

Maintenance Practices:

Cleaning and Inspection: Regular cleaning and inspection of DC motors are essential for their proper functioning. Accumulated dirt, dust, or debris should be removed from the motor’s exterior and internal components. Visual inspections should be carried out to check for any signs of wear, damage, loose connections, or overheating. Bearings, if applicable, should be inspected and lubricated as per the manufacturer’s recommendations.

Brush Maintenance: DC motors that use brushes for commutation require regular inspection and maintenance of the brushes. The brushes should be checked for wear, proper alignment, and smooth operation. Worn-out brushes should be replaced to ensure efficient motor performance. Brush holders and springs should also be inspected and cleaned as necessary.

Electrical Connections: The electrical connections of DC motors should be periodically checked to ensure they are tight, secure, and free from corrosion. Loose or damaged connections can lead to voltage drops, overheating, and poor motor performance. Any issues with the connections should be addressed promptly to maintain safe and reliable operation.

Insulation Testing: Insulation resistance testing should be performed periodically to assess the condition of the motor’s insulation system. This helps identify any insulation breakdown or degradation, which can lead to electrical faults or motor failures. Insulation resistance testing should be conducted following appropriate safety procedures and using suitable testing equipment.

Alignment and Balance: Proper alignment and balance of DC motors are crucial for their smooth operation and longevity. Misalignment or imbalance can result in increased vibrations, excessive wear on bearings, and reduced motor efficiency. Regular checks and adjustments should be made to ensure the motor is correctly aligned and balanced as per the manufacturer’s specifications.

Manufacturer’s Recommendations: It is important to refer to the manufacturer’s guidelines and recommendations for specific maintenance practices and intervals. Each DC motor model may have unique requirements, and following the manufacturer’s instructions ensures that maintenance is carried out correctly and in accordance with the motor’s design and specifications.

By adhering to safety considerations and implementing proper maintenance practices, DC motors can operate safely, reliably, and efficiently throughout their service life.

China Hot selling AC/DC 300kg Rolling Door Side Motors Roller Shutter Motor Price   with Great quality China Hot selling AC/DC 300kg Rolling Door Side Motors Roller Shutter Motor Price   with Great quality
editor by CX 2024-04-13

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