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We Manufacture And Tailor All Sizes Top-Level 3 Phase Electric Motor

We produce electric motor 0.1 ~400Kw, 2/4/6/8/10 Poles,  220/ 380/ 440/ 660/ 690 Volt, both 50 and 60Hz, also can customize due to your unique requirement and drawing. Quality is guaranteed, contact us freely NOW.

Electric Motor Manufacturer

Electric motor factory

Electric motor is a device that converts electrical energy into mechanical energy through the interaction of magnetic fields. It operates based on the principle of electromagnetic induction, where a current-carrying conductor experiences a force when placed in a magnetic field.

“Speedway” manufactures electric motor since 2015, has Y,YE, IE, YD, MS, YVP, YCT, YC, YL series,etc, focus on exporting to more than 70 different countries and areas, we know your market and how to solve your issue.

With a focus on technological advancement and customer satisfaction, China Speedway Group continues to evolve and expand its offerings in the electric motor industry.

How 3 phase AC Induction Motor Work?

Electric Motor Structure

Electric Motor Structure

Electric Motor Classification

#1.DC Motors

1) Brushed DC Motor

Use brushes and a commutator to switch the current direction in the armature windings, resulting in continuous rotation.

DC means “Direct-Current”.

2) Brushless DC Motor (BLDC)

Also known as electronically commutated motors, these motors use electronic controllers to switch the stator windings, eliminating the need for brushes.

Induction motor 1

#2. AC Motors

1) Asynchronous motor

The most common type of AC (Alternating-Current) motor where the rotor is driven by electromagnetic induction without any electrical connections to it.

1.1) Single-Phase Asynchronous motor

 Used in smaller applications and require a starting mechanism.

1.2) Three-Phase Asynchronous motor

 Efficient and robust motors used in industrial applications.

Induction motor 2

2) Synchronous Motor

These motors rotate at a speed synchronized with the frequency of the AC supply. They can be synchronous reluctance motors or permanent magnet synchronous motors.

#3. Special Motors

1) Stepper Motor

Used in precise motion control applications, stepper motors move in discrete steps.

2) Servo Motor

Can precisely control angular or linear position, velocity, and acceleration.

3) Linear Motor

These motors produce linear motion directly without the need for rotary-to-linear conversion mechanisms.

4) Hermetic Motor

Sealed motors used in applications where prevention of external contamination is critical, such as refrigeration compressors.

(3 Phase) Electric Motor Troubleshooting

Motor Fails to Start1. Faulty power supply1. Check power source and connections.
2. Faulty motor windings2. Test windings for continuity or shorts.
3. Overload or thermal protection engaged3. Allow motor to cool, reset thermal overload if necessary.
Motor Overheating1. High ambient temperature1. Improve ventilation around motor.
2. Overload or excessive duty cycle2. Reduce load or verify motor is appropriately sized.
3. Insufficient cooling3. Clean air vents, ensure fan is functioning.
Motor Runs but No Output1. Mechanical failure (e.g: broken rotor, damaged couplings)1. Inspect mechanical components, replace as needed.
2. Open electrical connections2. Check and tighten all electrical connections.
3. Faulty starting components (capacitor, switch)3. Test and replace faulty components.
Motor Runs at Inconsistent Speed1. Voltage fluctuations1. Stabilize voltage supply with regulators or UPS.
2. Faulty speed control devices (VFDs, controllers)2. Inspect and calibrate speed control devices.
3. Mechanical load variations3. Check load conditions and adjust as needed.
Motor Produces Unusual Noises1. Loose or worn mechanical parts1. Tighten or replace loose/worn parts (e.g: belts, couplings).
2. Broken rotor bars or stator laminations2. Inspect rotor and stator for damage, repair or replace if needed.
3. Cavitation in pumps (if applicable)3. Check fluid levels and pump operation.
Motor Vibrates Excessively1. Improper mounting or foundation1. Ensure motor is securely mounted on a stable foundation.
2. Rotor imbalance2. Balance the rotor or replace damaged components.
3. Worn or damaged bearings3. Inspect and replace worn bearings.
4. Electrical issues (e.g: phase imbalance)4. Check for balanced electrical phases.
Motor Frequent Tripping1. Overload or short circuit conditions1. Test motor windings for shorts and verify load conditions.
2. Faulty protective devices (overload relays, circuit breakers)2. Inspect and calibrate protective devices.
3. External factors (e.g., power surges, lightning strikes)3. Install surge protectors or lightning arresters.
Motor Exhibits Electrical Sparks1. Worn brushes or commutator1. Replace brushes or refurbish commutator.
2. Contamination or moisture in electrical components2. Clean and dry affected components thoroughly.
Motor Experiences Frequent Bearing Failures1. Improper lubrication1. Ensure bearings are adequately lubricated as per manufacturer’s guidelines.
2. Contamination (dust, moisture)2. Protect motor from contaminants; use seals if necessary.
3. Misalignment or excessive vibration3. Check alignment and balance; correct as needed.
Motor Brushes Wear Out Quickly1. Excessive current flow through brushes1. Check motor load and voltage; ensure they are within specifications. Replace brushes with correct type and size.
2. Poor brush contact with commutator2. Clean or replace brushes; ensure proper seating and tension.
3. Contaminants or debris on commutator3. Clean commutator surface thoroughly.
Motor Stalls or Loses Torque Under Load1. Insufficient power supply voltage or current1. Check voltage levels under load conditions; address any issues with power supply.
2. High mechanical load beyond motor rating2. Evaluate load conditions and ensure motor is appropriately sized.
3. Worn or damaged bearings3. Replace worn bearings; inspect for shaft misalignment.
Motor Corrosion or Rust1. Exposure to moisture or corrosive environments1. Protect motor with suitable coatings or enclosures.
2. Improper storage or maintenance practices2. Store motor in dry, controlled environment; conduct regular maintenance.
Motor Develops Excessive Shaft Play1. Worn bearings or bushings1. Replace worn bearings or bushings with correct replacements.
2. Shaft misalignment2. Check and correct shaft alignment using precision tools.
3. Excessive axial or radial loads3. Verify loads on shaft; consider redesigning support structure.
Motor Shaft Seizes or Locks Up1. Lack of lubrication or using incorrect lubricant1. Ensure proper lubrication with recommended oil or grease.
2. Excessive dirt or debris within motor2. Clean motor interior; protect against contaminants.
3. Overheating due to excessive load or ambient temperature3. Reduce load; improve cooling around motor.
Motor Runs in Reverse Direction1. Incorrect phase sequence in supply voltage1. Verify and correct phase sequence at motor terminals.
2. Faulty or miswired control circuit2. Check control wiring and connections; correct as needed.
3. Reversing starter or contactor operation3. Ensure correct configuration of starter or contactor.

Electric Motor Application

#1. Industrial Machinery

Electric motors power a vast range of industrial machinery such as pumps, compressors, fans, conveyors, and machine tools. They provide reliable and efficient mechanical motion for manufacturing processes.

#2. HVAC Systems

Heating, Ventilation, and Air Conditioning (HVAC) systems use electric motors to drive fans and blowers for air circulation, refrigeration compressors for cooling, and pumps for fluid circulation in heating and cooling systems.

#3. Transportation

Electric motors are crucial in various modes of transportation:

3.1 Electric Vehicles (EVs): EVs use electric motors for propulsion, offering a cleaner and more sustainable alternative to internal combustion engines.

3.2 Trains and Locomotives: Electric motors drive the wheels of electric trains and locomotives, providing efficient and reliable transportation solutions.

3.3 Shipping and Logistics

Cargo handling equipment in ports and warehouses, such as cranes, forklifts, and conveyor systems, rely on electric motors for material handling and transportation.

#4. Mining and Construction

In mining and construction equipment, electric motors power conveyor belts, crushers, drilling rigs, pumps, and excavators, contributing to efficient material handling and site operations.

#5. Robotics and Automation

Electric motors play a critical role in robotics and automation systems by providing precise motion control for robotic arms, automated assembly lines, and automated guided vehicles (AGVs).

#6. Agricultural Equipment

Agricultural machinery such as irrigation pumps, grain conveyors, and harvesting equipment use electric motors, which can improve efficiency and productivity in farming operations.

#7. Medical Equipment

Medical devices such as MRI machines, ventilators, and surgical tools rely on electric motors for precision and reliability in their operation.

#8. Steel and Metal Processing

Steel mills and metal fabrication facilities use electric motors to power rolling mills, cutters, grinders, and metal forming machines for processing raw materials into finished metal products.

cooling tower

Cooling Tower

Water Pump

Water Pump

CRH Train

CRH Train



Food Machinery

Food Machinery





MRI Machine


3 Phase Electric Motor Parameter

2 Pole

ModelRated powerVoltageNo load speed(rpm/min)PoleRated Torque(N.m)

4 Pole

ModelRated powerVoltageNo load speed(rpm/min)PoleRated Torque(N.m)

6 Pole

ModelRated PowerVoltageNo load speed(rpm/min)PoleRated Torque (N.m)

8 Pole

ModelRated powerVoltageNo load speed(rpm/min)PoleRated Torque(N.m)

Qualified Electric Motor Checklist

#1. Motor Information

Motor Nameplate Data

Verify motor type, horsepower (HP), voltage, current rating, speed, and frame size against application requirements.

Electric Motor Nameplate

#2. Mechanical Inspection

2.1 Physical Condition

Inspect for signs of damage, corrosion, or wear on motor housing, cooling fins, and mounting base.

2.2 Shaft Alignment

Check shaft alignment with connected equipment (e.g., pumps, fans) to prevent excessive bearing wear.

2.3 Bearing Condition

Check bearings for smooth operation, listen for unusual noise or vibration.

2.4 Cooling System

Ensure cooling fan and air vents are clean and unobstructed for optimal heat dissipation.

Electric motor factory 2

#3. Electrical Inspection

3.1 Electrical Connections

Inspect terminal connections for tightness and signs of overheating.

3.2 Insulation Resistance

Test motor windings for insulation resistance using a megohmmeter (megger).

3.3 Voltage and Current

Measure operating voltage and current to ensure they are within motor specifications.

3.4 Motor Starters and Controls

Check operation of motor starters, contactors, and overload relays for proper function.

#4. Operational Testing

4.1 Motor Start-Up

Verify smooth motor start-up and absence of abnormal noise or vibration.

4.2 Load Test

Apply rated load (if possible) to confirm motor performance under normal operating conditions.

4.3 Speed Verification

Measure motor speed using a tachometer to ensure it matches the rated speed.

4.4 Efficiency Check

Calculate motor efficiency by comparing input power (voltage x current) with output mechanical power.

Electric motor workshop

#5. Safety and Compliance

5.1 Safety Measures

Ensure all safety guards, covers, and labels are intact and compliant with safety standards.

5.2 Environmental Considerations

Verify motor installation meets environmental conditions (temperature, humidity, etc.) specified by manufacturer.

#6. Maintenance and Documentation

6.1 Maintenance History

Review maintenance records and service history for the motor.

6.2 Documentation

Keep detailed records of inspection findings, test results, and any corrective actions taken.

Our Electric Motor Benefit

cable connection

Cable Connection

Superior Bearing

Superior Bearing

copper coil

Copper Coil

Precision Rotor

Precision Rotor

Silicon Steel

Silicon Steel

High precision keyway

High Precision Keyway

matte paint finish

Matte Paint Finish

Excellent Cooling Cover

Excellent Cooling Cover

Three Phase Electric Motor list

Explosion proof 3 phase motor

Explosion-Proof Electric Motor


#1. Enclosure Design: Enclosures made of heavy-duty materials such as cast iron or aluminum.

#2. Sealed Construction: Motor enclosure are tightly sealed to prevent the ingress of flammable gases or dust.

#3. Specialized Venting: Has flame arrestors or pressure-relief mechanisms, which prevent external flames or gases from entering the motor while allowing safe venting of internal pressure.

#4. Non-Sparking Components: Use Non-ferrous metals and special alloys to minimize the risk of sparking during motor operation.

YE series 3 phase motor

YE Series Electric Motor


#1. High Efficiency: YE1/YE2/YE3/YE4 high efficiency motor.

#2. Sturdy Construction: High-quality cast iron or aluminum alloy frame.

#3. Low Noise and Vibration: Ensure smooth and stable performance.

#4. Class F Insulation: Provide high thermal resistance and reliability.

#5. IP55 Protection Rating: Make the motor dust-tight and protect against water jets from any direction.

3 Phase Synchronous motor

Synchronous Electric Motor


#1. Synchronization with AC Power Supply

#2. Precise Speed Control

#3. Power Factor Correction

#4. No Slip

#5. Stable Operation at Variable Loads

#6. Low Noise and Vibration

#7.Wide Range of Sizes and Ratings

IE Series Electric Motor

IE Series Electric Motor


#1. High Energy Efficiency: IE1 (Standard Efficiency), IE2/IE3 (High Efficiency), or IE4 (Premium Efficiency).

#2. Premium Materials and Construction: High-grade steel for the stator and rotor

#3. Optimal Design for Performance: Has advanced electromagnetic configurations, precision windings to enhance performance.

#4. Variable Speed: Can adjust motor speeds to match varying load requirements.

CE ISO9001 Electric Motor

CE ISO9001 Electric Motor


#1. CE Marking and ISO Certification: Meet EU and requirements for most countries.

#2. Low Noise and Vibration: Ensure smooth and stable performance.

#3. Compliance with International Standards: Meet standard (e.g., IEC, NEMA) to ensure product quality.

#4. Easy Installation and Maintenance: Minimize downtime and reduce overall operating costs.

The FAQs

Frequently Asked Questions About Our Electric Motor

Single-phase motors operate on a single alternating current (AC) phase and are commonly used in residential applications (e.g., household appliances). Three-phase motors use three alternating currents and are more efficient and suitable for industrial and commercial applications due to smoother operation and higher power output.

To improve energy efficiency:

  • Choose high-efficiency motors (e.g., IE3 or IE4 rated).
  • Implement variable frequency drives (VFDs) to control motor speed based on load demand.
  • Optimize motor sizing and match motor capacity to actual load requirements.
  • Ensure proper maintenance and alignment to minimize energy losses.

Speedway is committed to quality across all aspects of our business – our people, processes and products. We call this ‘the SPEEDWAY  standard’.

We welcome any sample order before big quantity purchase, that means 1pc is acceptable. More than 10pcs we will give discount.

  • Disconnect power before service or inspect motors.
  • Using appropriate personal protective equipment (PPE) when handling electrical components.
  • Adhering to lockout/tagout procedures to prevent accidental startup.
  • Following manufacturer’s guidelines and local electrical codes for installation and maintenance.

We have own factory to produce the main electric motor products, but we also do trading for other related products because we have resource to supply good quality and service.

  • Implement regular preventive maintenance schedules, including lubrication, cleaning, and inspection.
  • Ensure proper installation, alignment, and tensioning of belts and couplings.
  • Monitor operating conditions (temperature, vibration, current) and address issues promptly.
  • Use overload protection devices (such as thermal overloads) to prevent motor overheating.
  • Choose high-quality motors suitable for the application’s requirements and operating environment.

Yes,we have 5 senior engineers, 12 professional r & D team, 75 professional production personnel.

We support payment through wire transfer, like T/T, L/C, Western Union. Also accpet Paypal payment for sample piece order.

For sure. You can send us your logo, package or panel design, we will give you the final satisfied solution accordingly without additional cost !

Use the formula: Efficiency (%)=(Output Power / Input Power) ×100

  • Output Power = Mechanical power delivered by the motor (in watts or horsepower).
  • Input Power = Electrical power supplied to the motor (in watts or kilowatts).

Yes, electric motors can use in hazardous locations (e.g., Class I, Division 1 or 2). These motors are built with explosion-proof enclosures, special seals, and non-sparking components to prevent ignition of flammable gases, vapors, or dust in potentially explosive atmospheres.

  • Motor insulation class (e.g., Class F, Class H) determines the maximum allowable operating temperature of motor windings.
  • Higher insulation classes can withstand higher temperatures, allowing motors to operate reliably under more demanding conditions.
  • Proper insulation selection is crucial for preventing premature motor failures due to overheating.
  • Ensure proper motor mounting and alignment to minimize vibrations.
  • Use vibration isolators or dampening materials to reduce transmission of noise.
  • Maintain proper lubrication of bearings and moving parts to reduce friction-related noise.
  • Consider installing sound enclosures or barriers around noisy equipment to contain and reduce noise levels.
  • Yes, electric motors play a vital role in renewable energy systems such as wind turbines, solar trackers, and hydroelectric generators.
  • Motors are used to convert kinetic energy (from wind, sunlight, or water) into electrical energy, contributing to clean and sustainable power generation.
  • Ball Bearings: Used for low to moderate load applications and provide low friction and smooth operation.
  • Roller Bearings: Suitable for heavy-load applications, offering greater load capacity than ball bearings.
  • Sleeve Bearings: Simple and cost-effective, often used in light to moderate load applications.
  • Angular Contact Bearings: Designed to handle combined radial and axial loads.

Steps include:

  • Visual Inspection: Ensure initial rough alignment by visually checking the motor and driven machine.
  • Use Alignment Tools: Use dial indicators, laser alignment tools, or straight edges to achieve precise alignment.
  • Adjust and Secure: Adjust motor positioning (shim as needed) and securely fasten the motor to maintain alignment.
  • Reduced electrical and mechanical stress on the motor and connected equipment.
  • Extended lifespan of the motor and mechanical components.
  • Improved power quality and reduced electrical disturbances.
  • It determines the thermal loading and cooling requirements.
  • Different applications require different duty cycles (e.g., continuous duty, intermittent duty), impacting motor selection and performance.
  • Higher efficiency and longer lifespan due to the absence of brushes.
  • Lower maintenance requirements.
  • Better speed and torque control.
  • Reduced noise and heat generation.
  • Compact and lightweight design, suitable for various applications like electric vehicles and consumer electrons.

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