Tag Archives: curtain motor

China Standard AC Electric Indoor Air Conditioner Motor with Capacitor for Air Curtain Machine vacuum pump oil near me

Product Description

Factory Price AC Electric Fan Motor with Capacitor for Air Curtain Machine

Product characteristic 
Type: Fan motor for indoor air conditioner
This motor has a contorl system with Hall Effect Aplication, according input volt singal, it can control motor speed. But must be supported by a PCB in your machine.
IF we doesn’t have this system, we can only connect with the wires according the diagram on right. The motor also can work.
The installation of motor is firm and reliable, the fastener is tight, and the running is stable, without block and abnormal noise.
The matched high-efficiency vane with various sizes and lenghths are provided.
 
Mechanical dimensions 

Electrical specification
 

Brand Name: OEM Model Number: ZG-YYSS-01 Type: Asynchronous Motor
Frequency: 50/60HZ Output Power: 12w Protect Feature: Waterproof
Phase: Single-phase AC Voltage: 220V-240V Place of Origin: China (Mainland)
Efficiency: IE 2 rust prevention: thermal protector color: cream
voltage: 220-240V phase: single-phase rated current: 0.7A
speed: 1500rpm insulation grade: B type: AC motor
output power: 100W input power: 155W

Packaging & Delivery
Specifications
Air conditioner motor 
1.Voltage/Current:220-240/0.13A-0.28A 
2.Frequency:50/60Hz 
3.Output power: 6W ~25W 
Speed:800R/M~1300R/M

ABOUT US

Ritscher group was set up in 2006.we always focus on micro-motors for household electrical appliance and industry appliance since setting up.currently we have 2 professional micro-motor factories in China  which severally located in HangZhou city and HangZhou city.it has an area of 25,000 square CHINAMFG plants and more than 300 employees, annual output  is 3 million pcs and has 5 million pcs annual producing capacity.after several years development,we had built a great reputation in the market and got more and more customers’  trust in the world. We  started from shaded pole motors  at beginning, up to now,our product  included of shaded pole motors,synchronous motors,stepping motors ,capacitor motors, BLDC motors, DC motors and compressors. Our product  are widely used for making refrigerators, freezers, micro-wave ovens, air warmers, air exhausters, ventilators,ovens, air filter, massage machines and many other equipments. As a realiable quality guaranty,Ritscher has complete R&D departement,QC department,producing department,purchase department etc. has perfect producing equipment like Aluminum diecasting, Zinc diecasting, Sheet metal stamping, Plastic injection molding etc. also test/ detection device like multiplex temp measuring device, performance parameter inspection device, Phenol peptide solution pinhole tester,Anechoic room etc.   Endeavoring to provide the best product and service to customers,we always do the most effort to become an outstanding manufacturer of micro motors. CHINAMFG is always willing to establish sincere business relationship with friends from all over the world. Welcome contact with us!   

Our company FAQ for you

(1) Q: What kind motors you can provide?
A:For now,we mainly provide Kitchen Hood Motor,DC Motor,Gear Motor,Fan Motor Refrigerator Motor,Hair Dryer Motor Blender Motor Mixer Motor,
Shade Pole Motor,Capacitor Motor,BLDC Motor PMDC Motor,Synchronous Motor,Stepping Motor etc.

(2) Q: Is it possible to visit your factory
A: Sure. But please kindly keep us posted a few days in advance. We need to check our
schedule to see if we are available then.

(3) Q: Can I get some samples
A: It depends. If only a few samples for personal use or replacement, I am afraid it will
be difficult for us to provide, because all of our motors are custom made and no stock
available if there is no further needs. If just sample testing before the official order and
our MOQ, price and other terms are acceptable, we’d love to provide samples.

(4) Q: Is there a MOQ for your motors?
A: Yes. The MOQ is between 1000~10,000pcs for different models after sample approval.
But it’s also okay for us to accept smaller lots like a few dozens, hundreds or thousands
For the initial 3 orders after sample approval.For samples, there is no MOQ requirement. But the less the better (like no more than 5pcs) on condition that the quantity is enough in case any changes needed after initial testing.
 

Application: Industrial
Speed: Variable Speed
Number of Stator: Single-Phase
Function: Driving, Control
Casing Protection: Protection Type
Number of Poles: 2
Samples:
US$ 0/Piece
1 Piece(Min.Order)

|

Customization:
Available

|

induction motor

What role do AC motors play in HVAC (heating, ventilation, and air conditioning) systems?

In HVAC (heating, ventilation, and air conditioning) systems, AC motors play a crucial role in various components and functions. These motors are responsible for powering fans, compressors, pumps, and other essential equipment within the HVAC system. Let’s explore the specific roles of AC motors in HVAC systems:

  • Air Handling Units (AHUs) and Ventilation Systems: AC motors drive the fans in AHUs and ventilation systems. These fans draw in fresh air, circulate air within the building, and exhaust stale air. The motors provide the necessary power to move air through the ductwork and distribute it evenly throughout the space. They play a key role in maintaining proper indoor air quality, controlling humidity, and ensuring adequate ventilation.
  • Chillers and Cooling Towers: HVAC systems that use chillers for cooling rely on AC motors to drive the compressor. The motor powers the compressor, which circulates refrigerant through the system, absorbing heat from the indoor environment and releasing it outside. AC motors are also used in cooling towers, which dissipate heat from the chiller system by evaporating water. The motors drive the fans that draw air through the cooling tower and enhance heat transfer.
  • Heat Pumps: AC motors are integral components of heat pump systems, which provide both heating and cooling. The motor drives the compressor in the heat pump, enabling the transfer of heat between the indoor and outdoor environments. During cooling mode, the motor circulates refrigerant to extract heat from indoors and release it outside. In heating mode, the motor reverses the refrigerant flow to extract heat from the outdoor air or ground and transfer it indoors.
  • Furnaces and Boilers: In heating systems, AC motors power the blowers or fans in furnaces and boilers. The motor drives the blower to distribute heated air or steam throughout the building. This helps maintain a comfortable indoor temperature and ensures efficient heat distribution in the space.
  • Pumps and Circulation Systems: HVAC systems often incorporate pumps for water circulation, such as in hydronic heating or chilled water systems. AC motors drive these pumps, providing the necessary pressure to circulate water or other heat transfer fluids through the system. The motors ensure efficient flow rates and contribute to the effective transfer of thermal energy.
  • Dampers and Actuators: AC motors are used in HVAC systems to control airflow and regulate the position of dampers and actuators. These motors enable the adjustment of airflow rates, temperature control, and zone-specific climate control. By modulating the motor speed or position, HVAC systems can achieve precise control of air distribution and temperature in different areas of a building.

AC motors in HVAC systems are designed to meet specific performance requirements, such as variable speed control, energy efficiency, and reliable operation under varying loads. Maintenance and regular inspection of these motors are essential to ensure optimal performance, energy efficiency, and longevity of the HVAC system.

In conclusion, AC motors play vital roles in HVAC systems by powering fans, compressors, pumps, and actuators. They enable proper air circulation, temperature control, and efficient transfer of heat, contributing to the overall comfort, air quality, and energy efficiency of buildings.

induction motor

How do AC motors contribute to the functioning of household appliances?

AC motors play a crucial role in the functioning of numerous household appliances by converting electrical energy into mechanical energy. These motors are used in a wide range of devices, powering various components and performing essential tasks. Let’s explore how AC motors contribute to the functioning of household appliances:

  • Kitchen Appliances: AC motors are found in various kitchen appliances, such as refrigerators, freezers, dishwashers, and blenders. In refrigerators and freezers, AC motors drive the compressor, which circulates the refrigerant and maintains the desired temperature. Dishwashers use AC motors to power the water pumps, spray arms, and the motorized detergent dispenser. Blenders utilize AC motors to rotate the blades and blend ingredients.
  • Laundry Appliances: AC motors are integral to laundry appliances like washing machines and clothes dryers. Washing machines rely on AC motors to power the agitator or the drum, facilitating the washing and spinning cycles. Clothes dryers use AC motors to rotate the drum and operate the blower fan, facilitating the drying process.
  • Vacuum Cleaners: Vacuum cleaners utilize AC motors to generate suction and drive the motorized brush or beater bar. These motors power the fan or impeller, creating the necessary airflow for effective cleaning.
  • Fans and Air Circulation: AC motors are employed in various types of fans, including ceiling fans, table fans, and pedestal fans. These motors drive the fan blades, producing airflow and facilitating air circulation to provide cooling or ventilation in rooms. Additionally, AC motors power exhaust fans used in kitchens, bathrooms, and range hoods to remove odors, smoke, or excess moisture.
  • Air Conditioning and Heating Systems: AC motors are critical components in air conditioning and heating systems. They power the compressor, condenser fan, and blower fan, which are responsible for circulating refrigerant, dissipating heat, and delivering conditioned air throughout the house. AC motors enable the regulation of temperature and humidity levels, ensuring comfort in residential spaces.
  • Garage Door Openers: AC motors are utilized in garage door openers to drive the mechanism responsible for opening and closing the garage door. These motors generate the necessary torque to lift or lower the door smoothly and efficiently.
  • Other Appliances: AC motors are also found in a variety of other household appliances. For instance, they power pumps in water heaters, swimming pool filters, and sump pumps. AC motors are used in dehumidifiers, humidifiers, and air purifiers to drive the fans and other internal components. They are also present in audiovisual equipment, such as DVD players, record players, and fans used for cooling electronics.

In summary, AC motors are essential components in household appliances, enabling their proper functioning and delivering the mechanical energy required for various tasks. From kitchen appliances to laundry machines, fans, air conditioning systems, and more, AC motors provide the necessary power and functionality to enhance our daily lives.

induction motor

Can you explain the basic working principle of an AC motor?

An AC motor operates based on the principles of electromagnetic induction. It converts electrical energy into mechanical energy through the interaction of magnetic fields. The basic working principle of an AC motor involves the following steps:

  1. The AC motor consists of two main components: the stator and the rotor. The stator is the stationary part of the motor and contains the stator windings. The rotor is the rotating part of the motor and is connected to a shaft.
  2. When an alternating current (AC) is supplied to the stator windings, it creates a changing magnetic field.
  3. The changing magnetic field induces a voltage in the rotor windings, which are either short-circuited conductive bars or coils.
  4. The induced voltage in the rotor windings creates a magnetic field in the rotor.
  5. The magnetic field of the rotor interacts with the rotating magnetic field of the stator, resulting in a torque force.
  6. The torque force causes the rotor to rotate, transferring mechanical energy to the connected shaft.
  7. The rotation of the rotor continues as long as the AC power supply is provided to the stator windings.

This basic working principle is applicable to various types of AC motors, including induction motors and synchronous motors. However, the specific construction and design of the motor may vary depending on the type and intended application.

China Standard AC Electric Indoor Air Conditioner Motor with Capacitor for Air Curtain Machine   vacuum pump oil near me		China Standard AC Electric Indoor Air Conditioner Motor with Capacitor for Air Curtain Machine   vacuum pump oil near me
editor by CX 2023-11-29

China 28mm 12V 24V High Torque PMDC Planetary Geared Motor for Curtain wholesaler

Product Description

A. Specification of 28mm 12V 24V High Torque PMDC Planetary Geared Motor for Curtain:

one. Voltage: 6V 9V 12V 24V
2. Velocity: 1-eighteen twelve ≤ sixty three twelve ≤ 90 45 twelve ≤ one hundred thirty 6000 ≤ 750 4500 one hundred and five four.seven 420 2600

B. Business Ability
 1. Production line

two. Examination tools:

three. Certificates:

4 Exhibitions And Customer Visit:

5. FAQ(Q=Query, A=Answer)

Q: What’s your main products?
A:We presently create Brushed Dc Motors, Brushed Dc gear Motors, Planetary Dc Equipment Motors, Brushless Dc Motors, Stepper motors and Ac Motors and so on. You can check the requirements for earlier mentioned motors on our website and you can electronic mail us to suggest needed motors per your specification as well.

Q:How to decide on a suitable motor?
A:If you have motor images or drawings to display us, or you have comprehensive specs like voltage, velocity, torque, motor size, working mode of the motor, necessary life time and sound amount and so on, you should do not hesitate to allow us know, then we can suggest appropriate motor per your request accordingly.

Q: Do you have tailored support for your standard motors?
A:Yes, we can customize for each your request for the voltage, velocity, torque and shaft measurement/shape. If you need to have extra wires/cables soldered on the terminal or need to have to insert connectors, or capacitors or EMC we can make it way too.

Q:Do you have individual style service for motors?
A:Sure, we would like to style motors individually for our buyers, but it could need some CZPT cost and layout charge. 

Q:Can I have samples for screening 1st?
A:Of course, definitely you can. Right after confirmed the essential motor specs, we will estimate and provide a proforma bill for samples, after we get the payment, we will get a PASS from our account section to continue samples appropriately.

Q:How do you make sure motor good quality?
A:We have our own inspection processes: for incoming components, we have signed sample and drawing to make certain competent incoming materials for creation method, we have tour inspection in the method and ultimate inspection to make certain competent items just before shipping.

Q:What is actually your guide time?
A:Generally talking, our regular common solution will want twenty five-30days, a bit more time for customized items. But we are very adaptable on the lead time, it will relies upon on the particular orders

Q:What is your payment phrase?
A:For all our new clients, we will want 40% deposite, sixty% compensated just before shipment.

Q:When will you reply soon after got my inquiries?
A:We will reaction within 24 several hours once get your inquires.

Q:How can I trust you to make certain my funds is safe?
A:We are certified by the 3rd social gathering SGS and we have exported to in excess of eighty five nations around the world up to June.2017. You can check out our popularity with our current customers in your region (if our customers do not head), or you can purchase by means of alibaba to get trade assurance from alibaba to make sure your money is risk-free.

Q:What is the minimal purchase amount?
A:Our bare minimum purchase quantity is dependent on distinct motor types, please e-mail us to verify. Also, we typically do not accept personalized use motor orders. 

Q:What is actually your shipping technique for motors?
A:For samples and deals less than 100kg, we normally propose categorical delivery For large offers, we usually advise air shipping or sea transport. But it all depends on our customers’ wants.

Q:What certifications do you have?
A:We at the moment have CE and ROSH certifications.

Q:Can you send me your cost checklist?
A:Given that we have hundreds of various merchandise, and value may differ per various technical specs, we are not CZPT to offer a price checklist. But we can estimate inside 24 hrs once obtained your inquirues to make positive you can get the price in time.

Q:Can I visit your organization?
A:Of course, welcome to visit our business, but please let us know at minimum 2 weeks in progress to assist us make certain no other meetings throughout the working day you pay a visit to us. Thanks!

Weclome make contact with with us if have any concerns about this motor or other goods!

Application: Universal
Operating Speed: Low Speed
Function: Driving
Casing Protection: Protection Type
Structure and Working Principle: Brush
Certification: Ce,RoHS

###

Samples:
US$ 15/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Gearbox data for PG28M395-12V
Number of stages 1 stages 2 stages 3 stages 4 stages 5 stages
reduction reduction reduction reduction reduction
Reduction ratio 4, 4.75 16, 19, 22.5 64, 76,

90, 107

256, 304, 361,

428, 509

1024, 1216, 1444,

1715, 2036, 2418

Gearbox length(mm) 22 27.1 32.2 37.3 42.4
Max. running torque 2kgf. cm 3kgf. cm 4kgf. cm 6kgf. cm 10kgf. cm
Max. gear breaking torque 6kgf. cm 9kgf. cm 12kgf. cm 18kgf. cm 30kgf. cm
Gearing efficiency 90% 81% 73% 65% 59%

###

MOTOR DATA
MOTOR MODEL Rated No load Load Stall
Vol. Current Speed Current Speed Torque Power Torque Current
V mA r/min mA r/min gf. cm W gf. cm mA
RS-395123000 12 ≤ 60 3000 ≤ 250 2200 65 1.4 260 800
RS-395124500 12 ≤ 90 4500 ≤ 430 3300 80 2.6 320 1400
RS-395126000 12 ≤ 130 6000 ≤ 750 4500 105 4.7 420 2600
Application: Universal
Operating Speed: Low Speed
Function: Driving
Casing Protection: Protection Type
Structure and Working Principle: Brush
Certification: Ce,RoHS

###

Samples:
US$ 15/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Gearbox data for PG28M395-12V
Number of stages 1 stages 2 stages 3 stages 4 stages 5 stages
reduction reduction reduction reduction reduction
Reduction ratio 4, 4.75 16, 19, 22.5 64, 76,

90, 107

256, 304, 361,

428, 509

1024, 1216, 1444,

1715, 2036, 2418

Gearbox length(mm) 22 27.1 32.2 37.3 42.4
Max. running torque 2kgf. cm 3kgf. cm 4kgf. cm 6kgf. cm 10kgf. cm
Max. gear breaking torque 6kgf. cm 9kgf. cm 12kgf. cm 18kgf. cm 30kgf. cm
Gearing efficiency 90% 81% 73% 65% 59%

###

MOTOR DATA
MOTOR MODEL Rated No load Load Stall
Vol. Current Speed Current Speed Torque Power Torque Current
V mA r/min mA r/min gf. cm W gf. cm mA
RS-395123000 12 ≤ 60 3000 ≤ 250 2200 65 1.4 260 800
RS-395124500 12 ≤ 90 4500 ≤ 430 3300 80 2.6 320 1400
RS-395126000 12 ≤ 130 6000 ≤ 750 4500 105 4.7 420 2600

Benefits of a Planetary Motor

Besides being one of the most efficient forms of a drive, a Planetary Motor also offers a great number of other benefits. These features enable it to create a vast range of gear reductions, as well as generate higher torques and torque density. Let’s take a closer look at the benefits this mechanism has to offer. To understand what makes it so appealing, we’ll explore the different types of planetary systems.
Motor

Solar gear

The solar gear on a planetary motor has two distinct advantages. It produces less noise and heat than a helical gear. Its compact footprint also minimizes noise. It can operate at high speeds without sacrificing efficiency. However, it must be maintained with constant care to operate efficiently. Solar gears can be easily damaged by water and other debris. Solar gears on planetary motors may need to be replaced over time.
A planetary gearbox is composed of a sun gear and two or more planetary ring and spur gears. The sun gear is the primary gear and is driven by the input shaft. The other two gears mesh with the sun gear and engage the stationary ring gear. The three gears are held together by a carrier, which sets the spacing. The output shaft then turns the planetary gears. This creates an output shaft that rotates.
Another advantage of planetary gears is that they can transfer higher torques while being compact. These advantages have led to the creation of solar gears. They can reduce the amount of energy consumed and produce more power. They also provide a longer service life. They are an excellent choice for solar-powered vehicles. But they must be installed by a certified solar energy company. And there are other advantages as well. When you install a solar gear on a planetary motor, the energy produced by the sun will be converted to useful energy.
A solar gear on a planetary motor uses a solar gear to transmit torque from the sun to the planet. This system works on the principle that the sun gear rotates at the same rate as the planet gears. The sun gear has a common design modulus of -Ns/Np. Hence, a 24-tooth sun gear equals a 3-1/2 planet gear ratio. When you consider the efficiency of solar gears on planetary motors, you will be able to determine whether the solar gears are more efficient.

Sun gear

The mechanical arrangement of a planetary motor comprises of two components: a ring gear and a sun gear. The ring gear is fixed to the motor’s output shaft, while the sun gear rolls around and orbits around it. The ring gear and sun gear are linked by a planetary carrier, and the torque they produce is distributed across their teeth. The planetary structure arrangement also reduces backlash, and is critical to achieve a quick start and stop cycle.
When the two planetary gears rotate independently, the sun gear will rotate counterclockwise and the ring-gear will turn in the same direction. The ring-gear assembly is mounted in a carrier. The carrier gear and sun gear are connected to each other by a shaft. The planetary gears and sun gear rotate around each other on the ring-gear carrier to reduce the speed of the output shaft. The planetary gear system can be multiplied or staged to obtain a higher reduction ratio.
A planetary gear motor mimics the planetary rotation system. The input shaft turns a central gear, known as the sun gear, while the planetary gears rotate around a stationary sun gear. The motor’s compact design allows it to be easily mounted to a vehicle, and its low weight makes it ideal for small vehicles. In addition to being highly efficient, a planetary gear motor also offers many other benefits.
A planetary gearbox uses a sun gear to provide torque to the other gears. The planet pinions mesh with an internal tooth ring gear to generate rotation. The carrier also acts as a hub between the input gear and output shaft. The output shaft combines these two components, giving a higher torque. There are three types of planetary gearboxes: the sun gear and a wheel drive planetary gearbox.
Motor

Planetary gear

A planetary motor gear works by distributing rotational force along a separating plate and a cylindrical shaft. A shock-absorbing device is included between the separating plate and cylindrical shaft. This depressed portion prevents abrasion wear and foreign particles from entering the device. The separating plate and shaft are positioned coaxially. In this arrangement, the input shaft and output shaft are rotated relative to one another. The rotatable disc absorbs the impact.
Another benefit of a planetary motor gear is its efficiency. Planetary motor gears are highly efficient at transferring power, with 97% of the input energy being transferred to the output. They can also have high gear ratios, and offer low noise and backlash. This design also allows the planetary gearbox to work with electric motors. In addition, planetary gears also have a long service life. The efficiency of planetary gears is due in part to the large number of teeth.
Other benefits of a planetary motor gear include the ease of changing ratios, as well as the reduced safety stock. Unlike other gears, planetary gears don’t require special tools for changing ratios. They are used in numerous industries, and share parts across multiple sizes. This means that they are cost-effective to produce and require less safety stock. They can withstand high shock and wear, and are also compact. If you’re looking for a planetary motor gear, you’ve come to the right place.
The axial end surface of a planetary gear can be worn down by abrasion with a separating plate. In addition, foreign particles may enter the planetary gear device. These particles can damage the gears or even cause noise. As a result, you should check planetary gears for damage and wear. If you’re looking for a gear, make sure it has been thoroughly tested and installed by a professional.

Planetary gearbox

A planetary motor and gearbox are a common combination of electric and mechanical power sources. They share the load of rotation between multiple gear teeth to increase the torque capacity. This design is also more rigid, with low backlash that can be as low as one or two arc minutes. The advantages of a planetary gearmotor over a conventional electric motor include compact size, high efficiency, and less risk of gear failure. Planetary gear motors are also more reliable and durable than conventional electric motors.
A planetary gearbox is designed for a single stage of reduction, or a multiple-stage unit can be built with several individual cartridges. Gear ratios may also be selected according to user preference, either to face mount the output stage or to use a 5mm hex shaft. For multi-stage planetary gearboxes, there are a variety of different options available. These include high-efficiency planetary gearboxes that achieve a 98% efficiency at single reduction. In addition, they are noiseless, and reduce heat loss.
A planetary gearbox may be used to increase torque in a robot or other automated system. There are different types of planetary gear sets available, including gearboxes with sliding or rolling sections. When choosing a planetary gearset, consider the environment and other factors such as backlash, torque, and ratio. There are many advantages to a planetary gearbox and the benefits and drawbacks associated with it.
Planetary gearboxes are similar to those in a solar system. They feature a central sun gear in the middle, two or more outer gears, and a ring gear at the output. The planetary gears rotate in a ring-like structure around a stationary sun gear. When the gears are engaged, they are connected by a carrier that is fixed to the machine’s shaft.
Motor

Planetary gear motor

Planetary gear motors reduce the rotational speed of an armature by one or more times. The reduction ratio depends on the structure of the planetary gear device. The planetary gear device has an output shaft and an armature shaft. A separating plate separates the two. The output shaft moves in a circular pattern to turn the pinion 3. When the pinion rotates to the engagement position, it is engaged with the ring gear 4. The ring gear then transmits the rotational torque to the armature shaft. The result is that the engine cranks up.
Planetary gear motors are cylindrical in shape and are available in various power levels. They are typically made of steel or brass and contain multiple gears that share the load. These motors can handle massive power transfers. The planetary gear drive, on the other hand, requires more components, such as a sun’s gear and multiple planetary gears. Consequently, it may not be suitable for all types of applications. Therefore, the planetary gear drive is generally used for more complex machines.
Brush dusts from the electric motor may enter the planetary gear device and cause it to malfunction. In addition, abrasion wear on the separating plate can affect the gear engagement of the planetary gear device. If this occurs, the gears will not engage properly and may make noise. In order to prevent such a situation from occurring, it is important to regularly inspect planetary gear motors and their abrasion-resistant separating plates.
Planetary gear motors come in many different power levels and sizes. These motors are usually cylindrical in shape and are made of steel, brass, plastic, or a combination of both materials. A planetary gear motor can be used in applications where space is an issue. This motor also allows for low gearings in small spaces. The planetary gearing allows for large amounts of power transfer. The output shaft size is dependent on the gear ratio and the motor speed.

China 28mm 12V 24V High Torque PMDC Planetary Geared Motor for Curtain     wholesaler China 28mm 12V 24V High Torque PMDC Planetary Geared Motor for Curtain     wholesaler
editor by czh 2023-01-29