Product Description

Product Description

 Product: YB2 Explosion proof mining explosion proof motor
YB2 YB3 ATEX IECEX Explosion Proof high effciency Coal Mine mining 3 phase ac induction asynchronous electric Motor

Feature and usage


YB2 ranges of three-phase induction motors are explosion proof motor obtained by renewal and generation-changing of YB ranges of explosion proof motor . The performances of the products have come up to advanced international standards.

The motors have the advantages of higher efficiency, energy saving, higher locked-rotor torque, lower noise, smaller vibration, safe and reliable operation and beautiful appearance, etc. The outputs, mounting dimensions and their corresponding relationships comply with IEC standards.

YB2 series electric  explosion proof motor are designed and manufactured into explosion proof type motor and the explosion proof property conforms to China National Standards: GB3836.1-2000 Electrical Apparatus for Explosive Gas Atmospheres-General Requirements. GB3836.2-2000 Electrical Apparatus for Explosive Gas Atmospheres- Explosion proof Enclosure d and standards IEC79-1, BS4683 and EN50018. ExdI- safe for use in the non-mining surfaces of underground coal mines where the explosive mixtures of methane or coal-dust are present. ExdIIAT4 – safe for use in plants where the explosive mixtures of IIA Class, TI, T2, T3 or T4 are present. ExdIIBT4 – safe for use in plants where the explosive mixtures of IIB Class, TI, T2, T3 or T4 are present. ExdIICT4 – safe for use in plants where the explosive mixtures of IIC Class, TI, T2, T3 or T4 are present.


YB2 flame proof mining motor Model Explanation

Motor Performance

YB2 flame proof mining motor Motor Performance

Explosion proof mark:EXD1 EXDIIAT4 EXDIIBT4  EXDIICT4

Certificate:IECEX ATEX(for Europe market)

Ambient Temperature: -15°C~40°C

Altitude: not exceed 1000 Meter

Rated Voltage: 380V or any voltage between 220-760V

Rated Frequency: 50Hz/60Hz

Protection Class: IP55

Insulation Class: F/H

Temprature rise: B/F

Cooling Method: IC0141

Working Duty: S1(Continuous)

Humidity: Lower than 90%

Connection: Star-connection for up to 3kW; Delta-connection for 4kW and above

YB2 mining  explosion proof motor Structure Description
YB2 series ac induction  explosion proof motor mounting details:

Schematic diagram        
mounting type B3 B35 B5 V1
mounting Discribtion frame with feet,end-shield without flange frame with feet,end-shield with flange frame without feet,end-shield with flange frame without feet,end-shield with flange
Suitable frame H63-355 H63-355 H63-280 H180-355

YB2 series motors are totally enclosed fan cold(TEFC). 5.bearing type-table 2 table 2

Horizontal vertical
motor frame DE side N-DE side DE side N-DE side
63 6201-2RZ/Z2 6201-2RZ/Z2 6201-2RZ/Z2 6201-2RZ/Z2
71 6202-2RZ/Z2 6202-2RZ/Z2 6202-2RZ/Z2 6202-2RZ/Z2
80 6204-2RZ/Z2 6204-2RZ/Z2 6204-2RZ/Z2 6204-2RZ/Z2
90 6205-2RZ/Z2 6205-2RZ/Z2 6205-2RZ/Z2 6205-2RZ/Z2
100 6206-2RZ/Z2 6206-2RZ/Z2 6206-2RZ/Z2 6206-2RZ/Z2
112 6206-2RZ/Z2 6206-2RZ/Z2 6206-2RZ/Z2 6206-2RZ/Z2
132 6208-2RZ/Z2 6208-2RZ/Z2 6208-2RZ/Z2 6208-2RZ/Z2
160 6209-2RZ/Z2 6209-2RZ/Z2 6209-2RZ/Z2 6209-2RZ/Z2
180 6211/Z2 6211/Z2 6211/Z2 6211/Z2
200 6312/Z2 6312/Z2 6312/Z2 6312/Z2
225(2P) 6312/Z2 6312/Z2 6312/Z2 6312/Z2
225(4-8P) 6313/Z2 6212/Z2 6313/Z2 6312/Z2
250(2P) 6313/Z2/Z2 6313/Z1 6313/Z2 6313/Z1
250(4-8P) 6314/Z1 6213/Z1 6314/Z1 6313/Z1
280(2P) 6314/Z1 6313/Z1 6314/Z1 6313/Z1
280(4P) 6317/Z1 6313/Z1 6317/Z1 6313/Z1
315(2P) 6317/Z1 6317/Z1 6317/Z1 6317/Z1
315(4-8P) NU319 6319/Z1 NU319 6319/Z1
355(2P) 6319/Z1 6319/Z1 6319/Z1 6319/Z1
355(4-8P) NU322 6322/Z1 NU322/Z1 6322/Z1

YB2 flame proof mining motor Pictures

Company Profile



Production Process

Production application

Packaging & Shipping


CHINAMFG Marketing Network


After Sales Service




Q: Do you offer OEM service?

A: Yes.


Q: What is your payment term?

A: 30% T/T in advance, 70% before delivery. Or irrevocable L/C.


Q: What is your lead time?

A: About 10-45 days after receiving deposit or original L/C.


Q: What certifiicate do you have?

A: We have CE, ISO,CCC and so on. 





  • Stamping of lamination
  • Rotor die-casting
  • Winding and inserting – both manual and semi-automatically
  • Vacuum varnishing
  • Machining shaft, housing, end shields, etc
  • Rotor balancing
  • Painting – both wet paint and powder coating
  • Motor assembly
  • Packing
  • Inspecting spare parts every processing
  • 100% test after each process and final test before packing. 


  • PINNXUN supplies standard products to customers.
  • PINNXUN supplies standard products under customers’ brands and packaging, etc
  • PINNXUN  R&D department develops any new products together with the customers.

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Application: Industrial
Speed: Constant Speed
Number of Stator: Three-Phase
Function: Driving
Casing Protection: Closed Type
Number of Poles: 2, 4, 6, 8, 10, 12


3 phase motor

What is a 3-phase motor and how does it work?

A 3-phase motor is a type of electric motor that operates on a three-phase power supply. It is widely used in various industrial and commercial applications due to its efficiency, reliability, and ability to provide high torque output. Here’s a detailed explanation of what a 3-phase motor is and how it works:

A 3-phase motor consists of three windings, typically placed 120 degrees apart around the motor’s stator. These windings are energized by a balanced three-phase power supply, which generates a rotating magnetic field within the motor. The rotating magnetic field interacts with the motor’s rotor, causing it to rotate and produce mechanical power.

Here’s a step-by-step explanation of how a 3-phase motor works:

  1. Power Supply: A 3-phase motor requires a three-phase power supply, which typically consists of three alternating current (AC) voltage waveforms that are 120 degrees out of phase with each other. The power supply is connected to the motor’s three windings.
  2. Stator Windings: The stator windings are coils of wire that are wound around the motor’s stator. Each winding is connected to a different phase of the power supply. When the power supply is energized, alternating current flows through each winding, creating a magnetic field around the stator.
  3. Rotating Magnetic Field: The three-phase current flowing through the stator windings creates a rotating magnetic field. The rotating magnetic field is produced because the three phases are out of phase with each other by 120 degrees. This rotating magnetic field is responsible for the motor’s operation.
  4. Rotor: The rotor is the rotating part of the motor. It is typically made of a series of conductive bars or laminated iron cores. The rotor is placed within the rotating magnetic field created by the stator windings.
  5. Induction or Synchronous Operation: Depending on the design of the motor, it can operate as an induction motor or a synchronous motor.
    • Induction Motor: In an induction motor, the rotating magnetic field induces currents in the rotor bars through electromagnetic induction. These induced currents create a magnetic field in the rotor that interacts with the stator’s rotating magnetic field, causing the rotor to rotate. The speed at which the rotor rotates is slightly slower than the speed of the rotating magnetic field, creating a slip. The slip allows the motor to produce torque and overcome inertia or mechanical load.
  6. Mechanical Power Output: As the rotor rotates within the rotating magnetic field, it generates torque. The torque produced by the motor can be used to drive mechanical loads, such as pumps, fans, compressors, conveyors, or machinery. The motor’s speed and torque output can be controlled by adjusting the frequency or voltage of the three-phase power supply, or by implementing control strategies within the motor’s control system.

Overall, a 3-phase motor is a versatile and efficient motor that operates on a three-phase power supply. It works by creating a rotating magnetic field in the motor’s stator through energized windings. This rotating magnetic field interacts with the rotor, causing it to rotate and generate mechanical power. Whether it operates as an induction motor or a synchronous motor, the 3-phase motor is widely used in various industrial applications due to its reliable and high-performance characteristics.

3 phase motor

Can you provide examples of machinery or equipment that use 3-phase motors?

Various types of machinery and equipment rely on 3-phase motors for their operation. Here are some examples of applications where 3-phase motors are commonly used:

  • Industrial Machinery: 3-phase motors are extensively used in industrial machinery, including pumps, compressors, fans, blowers, conveyors, mixers, agitators, and centrifuges. These motors provide the necessary power and torque to drive heavy-duty equipment commonly found in manufacturing plants, refineries, mining operations, and other industrial settings.
  • Electric Generators: Many electric generators, both stationary and portable, are driven by 3-phase motors. These generators produce electrical power by converting mechanical energy into electrical energy. They are widely used in construction sites, emergency backup systems, remote locations, and other applications where a reliable power supply is required.
  • Air Conditioning and HVAC Systems: 3-phase motors are employed in air conditioning and HVAC (heating, ventilation, and air conditioning) systems. They power the compressors, fans, and pumps that circulate and condition the air in commercial buildings, offices, hospitals, shopping malls, and other large-scale facilities.
  • Machine Tools: Machine tools, such as lathes, milling machines, grinders, and drilling machines, often utilize 3-phase motors for precision machining operations. These motors provide the required power and control to drive the cutting tools and move the workpieces accurately.
  • Water and Wastewater Treatment Systems: 3-phase motors play a crucial role in water and wastewater treatment systems. They power pumps, aerators, mixers, and other equipment involved in the treatment and distribution of clean water, as well as the processing and disposal of wastewater in municipal and industrial treatment plants.
  • Refrigeration Systems: 3-phase motors are commonly used in commercial refrigeration systems, such as walk-in coolers, refrigerated display cases, and industrial refrigeration units. These motors drive the compressors that circulate the refrigerant and maintain the desired temperature for food storage, preservation, and cooling applications.
  • Elevators and Escalators: Many elevators and escalators rely on 3-phase motors for their vertical transportation functions. These motors power the lifting mechanisms, allowing for smooth and efficient movement of people and goods within buildings, airports, train stations, and other vertical transportation systems.
  • Industrial and Commercial Fans: Large industrial and commercial fans, such as those used for ventilation, cooling, or air circulation in warehouses, factories, gymnasiums, and other large spaces, often employ 3-phase motors. These motors provide the necessary power to drive the fan blades and move substantial volumes of air.
  • Printing Presses: Printing presses, used in the printing and publishing industry, utilize 3-phase motors to power various components, such as the paper feed systems, printing cylinders, ink pumps, and drying units. These motors enable high-speed and precise operation in commercial printing applications.
  • Crushers and Grinders: Crushers, grinders, and shredders in industries such as mining, construction, and recycling employ 3-phase motors to drive their crushing and grinding mechanisms. These motors provide the necessary power and torque to break down and process various materials efficiently.

These are just a few examples of machinery and equipment that rely on 3-phase motors for their operation. 3-phase motors are widely used in numerous industrial, commercial, and residential applications due to their efficiency, reliability, and ability to deliver high power output.

3 phase motor

What role do 3-phase motors play in the efficiency of HVAC systems?

3-phase motors play a crucial role in enhancing the efficiency of HVAC (Heating, Ventilation, and Air Conditioning) systems. Here’s a detailed explanation of their contribution:

  • Air Handling Units (AHUs):
    • 3-phase motors are commonly used in HVAC systems to power the fans in air handling units (AHUs). These fans circulate and distribute conditioned air throughout the building.
    • The use of 3-phase motors in AHUs allows for efficient and reliable operation. They can deliver the necessary airflow at varying static pressures, ensuring optimal air distribution and ventilation in different zones of the building.
  • Chillers and Cooling Towers:
    • In large-scale HVAC systems, 3-phase motors are utilized in chillers and cooling towers. These components are responsible for cooling the water used in the HVAC system.
    • Efficient 3-phase motors drive the compressors and fans in chillers and cooling towers, enabling effective heat transfer and temperature control. This results in improved energy efficiency and cooling performance of the HVAC system.
  • Variable Air Volume (VAV) Systems:
    • 3-phase motors are often employed in Variable Air Volume (VAV) systems, which allow for individual control of airflow in different zones or rooms of a building.
    • By using 3-phase motors in VAV systems, the air volume can be easily adjusted to meet the specific cooling or heating demands of each zone. This enables precise temperature control, reduces energy wastage, and enhances overall HVAC system efficiency.
  • Energy-Saving Measures:
    • 3-phase motors in HVAC systems can be integrated with energy-saving measures to improve efficiency. For example, they can be paired with variable frequency drives (VFDs), which allow for the modulation of motor speed and power consumption based on actual needs.
    • VFDs control the speed of 3-phase motors, ensuring that they operate at optimal speeds for different load conditions. This results in significant energy savings, as motors consume less power when operating at lower speeds.
  • Reliability and Durability:
    • HVAC systems require reliable and durable components to ensure continuous operation. 3-phase motors are known for their robust construction and ability to withstand the demanding conditions typically found in HVAC applications.
    • The reliability of 3-phase motors minimizes the risk of motor failures and unexpected downtime, allowing HVAC systems to operate efficiently and maintain occupant comfort.

Overall, 3-phase motors play a critical role in enhancing the efficiency of HVAC systems. They power the fans, compressors, and pumps, enabling effective air distribution, temperature control, and heat transfer. Their integration with energy-saving measures further optimizes energy consumption, resulting in improved overall HVAC system efficiency and reduced operating costs.

China manufacturer Yb3 Atex Iecex Explosion Proof High Effciency Coal Mine Mining Three Phase AC Induction Asynchronous Electric Motor   vacuum pump connector	China manufacturer Yb3 Atex Iecex Explosion Proof High Effciency Coal Mine Mining Three Phase AC Induction Asynchronous Electric Motor   vacuum pump connector
editor by CX 2024-05-07