All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(2566 products available)
An electric motor stator coil is part of an electric motor. It consists of wire loops or windings positioned around the rotor. The stator creates an electromagnetic field that interacts with the rotor, causing it to turn and drive mechanical loads. Electric motor stator coils can be classified based on their design.
Solenoid Coils
Solenoid coils are an electric motor stator coil with windings forming a hollow cylinder. They represent a basic design. Current passing through the windings generates a magnetic field perpendicular to the axis. The magnetic field attracts or repels ferromagnetic objects when within the field.
Direct Drive Coils
Direct drive coils are an electric motor stator coil exposed directly to the rotor without any intervening component. This allows the maximum transfer of torque from the coil to the load being driven. Producing them is simpler than the other designs, but they are less efficient.
Multi-Pole Coils
Multi-pole coils stators contain several electromagnetic poles formed by winding coils around a soft iron core. They increase the number of magnetic poles in proximity to the rotor within the motor. This enhances torque production and improves efficiency. Multi-pole coil stators are commonly used in high-performance motors requiring high torque and efficiency.
Distributed Coils
Distributed coils stators have multiple coil groups spaced around the rotor. This allows for uniform magnetic field distribution. It also reduces cogging torque, which is the resistance felt when turning a motor with no power supplied to the windings. Distributed coils are commonly used in brushless DC motors and AC permanent magnet motors.
Chopper Coils
Chopper coils use a commutation method to switch the direction of the current through the coils. This allows for efficient torque production and smooth motor operation. The design is mostly used in small DC motors and stepper motors with precise motion control requirements.
Stator coils come in different specs, and electric motors typically use three-phase stator coils. Their voltage and power ratings vary depending on the specific electric motor application. Coils need constant maintenance, considering that the stator is mostly stationary, and the rotor rotates inside it. Even so, routine stator inspection is pretty essential because it can reveal a lot about the electric motor's health.
Service the electric motor stator coil by closely inspecting it for mechanical damage, common signs of burning, overheating, or discoloration. Other issues to watch out for include loose windings, cracked insulation, and debris build-up. When critically noticed, damage to the coil can easily lead to further harm to the entire electric motor stator. That's why it's important to regularly inspect it for damage, as it can also impact the motor's performance efficiency.
Applying compressed air, gently blow off any dirt or dust debris that may have settled in the coil. If there is any grease or oil spill, use a cleaning solvent or degreaser to wipe off the residuum. Maintain the coil temp according to the manufacturer's recommendations. If the stator coil needs repair, it should only be done by qualified professionals to ensure compliance with safety standards and regulations. If there are any major issues or damages in the assessment, the better option would be to replace the stator coil rather than the repair option.
Electric motors are key components in numerous industry applications primarily driven by their efficient energy conversion capabilities. As a result, they are found in many industries.
Industrial manufacturing:
An electric motor is used as a driving mechanism for cranes, conveyor belts and lifts in the logistics and warehousing industry. Automated lifting and palletizing equipment and sorting machinery all require electric motors as the driving force behind their functioning. Likewise, the electric motor is also the driving force behind the machines' jobs in the greenhouse growing industry. Fans, pumps, sprinklers, seeders and other equipment generally use electric motors.
Automotive:
The electric motor stator coil is a central piece of motor electric vehicles. So far, electric vehicles have required two motors: one for driving and the other for the vehicle's functional components. The latter includes doors, windows, headlights and other accessories.
Home appliances:
Applications in this sector include refrigerators, washing machines, water pumps and more. Electrical appliances are generally driven by electric motor stator coils.
Smartphones and laptops
Miniature stator coils are the driving force behind the multitude of motors used in smart gadgets. From the vibration function to the photography lens focus, electric motors play a vital role in achieving the full function of smart devices.
Renewable energy:
Wind power generation systems have requirements for electric motor coils. This is because the great winds spin the rotor blades of the power generation system, and the work of this spooling is all done by the electric motor coils. They transform the mechanical energy into electrical energy and feed it into the power grid to become an electrical element that increases the sources of power.
There are multiple ways to choose electric motor coils. The following tips will help find the right electric coils for various motor types.
Identify Application Needs
First, identify the needs of the motor applications. Determine the voltage and power requirements of the motor. Also, consider the motor's physical dimensions and impedance.
Cross-reference with Existing Stators
Check the existing stator coils to be replaced. Cross-reference the previous stator coil's specifications with the new stator's details to ensure compatibility.
Contact Motor Manufacturers
Reach out to the manufacturers of the electric motor in use or the one intended for use. Ask them to recommend suitable stator coils for optimal motor performance.
Wholesale Suppliers Catalogs
Go through the catalogs of wholesale suppliers and manufacturers. Check the various available stator coils. Take note of their features and specifications, and compare them to the motor's needs.
Make an informed choice of stator coils from the details in the catalogs.
Direct Contact with Suppliers
Consider reaching out to specific suppliers directly. Request information about their available stator coils and magnetic materials. Negotiate pricing if there is a need to buy in bulk.
Make an informed decision based on the suppliers' options. Ensure the selected stator coil will adequately fulfill motor needs.
Coil Construction
Select a stator coil construction that fits the intended motor application. Focus on the motor's efficiency, noise level, performance, and dimensions. Consider the benefits of each coil construction discussed above before making a choice.
For instance, choose distributed stator coils for motors that require high speeds. Meanwhile, low-speed motors will perform better if they have concentrated stator coils. Also, choose concentric coils for motors that need high efficiency.
Q1. Does the stator provide support for other components of an electric motor?
A1. Yes, the stator serves as the foundation of an electric motor. It provides support for other motor components, including the windings, pole parts, and rotor, which permit their correct alignment and functioning.
Q2. What type of stator does a DC motor have?
A2. A simple DC motor stator comprises a permanent magnet that forms two magnetic poles. More complex DC motors may have an electromagnet stator.
Q3. What are some common faults with stators?
A3. Some common stator faults include uneven wear, physical damage, electrical shorts, and partial failures.
Q4. What roles do the stator and rotor play in electricity generation?
A4. The rotor spins to create an electromagnetic field, which together with the magnetic field produced by the static coils of wire of the stator, generates electricity.
