Discount Ex Induction Motors Supplier & Factory

High-Efficiency Flameproof, Dust-Proof, and Explosion-Proof Induction Drivetrains Built to Global Industrial Standards (ATEX, IECEx, UL, GOST)

Featured Ex Induction Drivetrains & Soft Starters

Engineered to secure mission-critical environments. Inspect our selection of premier industrial motors and controller cabinets.

OEM YBX4 Series Three-phase Asynchronous Ex motors

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Discount YE5 IE5 Three Phase Ultra Premium Efficiency Motors

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Custom High voltage soft start state cabinet

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OEM YRKK high efficiency 6KV or 10KV high voltage motor

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China YFB4 series Dust explosion-proof motor

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Custom YBX5 Series Asynchronous Totally Enclosed Induction Ex Motors

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High-Quality YBBP Low voltage explosion-proof motor

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China YBK3 Flameproof motor

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1955
FOUNDING YEAR
60+
YEARS EXPERIENCE
1,800+
MOTOR VARIETIES
1,200+
EMPLOYEES
260+
TECH ENGINEERS

1. Macro-Industry Solutions: Explosion-Proof Power for Critical Systems

Global industrial growth demands high safety and operational continuity. Modern processing facilities require motors engineered to prevent catastrophic events in explosive environments.

Hydrocarbon Processing

Oil, gas, and petrochemical sectors run continuously, producing volatile gases and vapors. Our flameproof (Ex d) motors, including the YBX4 and YBX5 Series, prevent internal electrical ignition sources from initiating external gas explosions. This ensures consistent operation for heavy pumps, air compressors, and refining equipment.

Mining and Subterranean

Underground extraction is exposed to coal dust and atmospheric methane. The YBK3 series flameproof motor is designed for underground coal mines. Built with high-strength cast-iron frames, these systems withstand heavy physical stress and corrosive mine air, driving conveyor belts and ventilation fans safely.

Combustible Dust Safety

Agriculture, milling, and fine chemicals handle fine organic and synthetic dust. These dust clouds can ignite under high surface temperatures. The YFB3 and YFB4 series dust-ignition-proof motors use IP6X dust-tight seals to isolate the internal motor components, preventing localized thermal buildup from igniting dust layers.

2. Global Commercial & Industrial Market Status

The modern industrial landscape shows a direct correlation between explosion-proof compliance and carbon footprint reduction goals. As international efficiency mandates phase out low-grade motors, selecting the right partner becomes a strategic imperative.

The Regulatory Evolution

International regulatory structures continue to converge toward safer, more uniform codes. Today, industrial operators must comply with European ATEX directives, the international IECEx system, North American UL/CSA standards, and regional certifications like Russia’s GOST. Purchasing from a factory that designs and certifies motors to all these frameworks allows global engineering firms to simplify their supply chains, reduce equipment variance, and speed up plant commissioning.

The Premium Efficiency Mandate

Globally, industrial motors consume over 40% of all electric power. This has driven clean energy regulators to require minimum efficiency levels of IE3, IE4, and now IE5 (Ultra Premium Efficiency). Historically, explosion-proof motors lagged behind standard industrial motors in efficiency due to heavy enclosures and seal drag. Modern designs, like our YE5 IE5 series and variable-speed systems, provide both explosive-gas safety and high energy efficiency, lowering operational costs and total carbon footprint.

SIMO Company Electric Motor Manufacturing Factory

3. Xi’an Lite SIMO Motor Co., Ltd. Heritage

Founded in 1955, SIMO Motor has over 60 years of history in manufacturing and distributing large, medium, high/low voltage, DC, synchronous, and explosion-proof motors.

Serving as a core pillar of the industrial motor manufacturing sector, SIMO maintains a modern production scale that ranks at the top of the market. Our 21.5 million RMB registered capital and 380 million RMB in fixed assets support operations across three manufacturing facilities and one subsidiary. Over 1,200 employees, including 260 technical engineers, 21 senior engineers, and 15 expert engineers, ensure that every motor leaving our assembly lines meets international performance standards.

1955

SIMO Motor established as a government-led industrial enterprise, laying the groundwork for heavy mechanical manufacturing.

1957

Relocated to a dedicated plant in Xi'an City, expanding manufacturing capacity and engineering teams.

1966

Renamed to Xi'an Motor Factory following acquisitions and integrations, centralizing manufacturing resources.

1999

Reformed from a state-owned factory into a limited liability company, introducing modern corporate management.

2005

SIMO Motor Group established, growing to incorporate 14 specialized subsidiaries across the country.

2006

Moved to a high-tech and advanced facility with modern CNC processing and computerized winding machines.

2009 - Present

Renamed to Tech Full Simo Motor, continuously expanding global market reach and high-efficiency motor options.

4. Comprehensive R&D Capabilities & Product Portfolio

Our R&D division supports 34 major series, more than 1,800 varieties, and over 19,500 specifications. Power outputs span from 0.35 kW to 25,000 kW, providing solutions for standard and custom requests.

Key Series Overview:

  • High Voltage High Efficiency: YX, YXKK, YXKS series three-phase asynchronous motors.
  • Wound Rotor High Voltage: YR, YRKK, YRKS series wound rotor motors.
  • Low Voltage Premium Efficiency: YE3, YE4 (IE4), YE5 (IE5) asynchronous motors.
  • Variable Frequency & Variable Speed: YVFE3, YVFE4, YVFE5 series high/low voltage motors.
  • Explosion-Proof Series: YBX3, YBX4, YBX5 series flameproof motors.
  • Synchronous Range: T, TD, TK, TDMK synchronous motors & TFW series large synchronous generators (350 kW - 5000 kW).
  • DC Motors: Z2, Z4 and Z series DC motors.

Manufacturing & Quality Controls in Action

SIMO Manufacturing Facility
High Precision Motor Stator Winding
Explosion Proof Motor Assembly
Quality Control Testing Bay

5. Compliance & Certification Framework

Explosion-proof products require certified quality standards. SIMO has implemented a Quality Management System that has passed rigorous audits for global safety compliance.

Our motors are certified under the ISO9001 Quality System, EU "CE", US "UL", and Russian "GOST" systems. The structural casings, wiring channels, and connection components of our Ex-rated lines are engineered to meet or exceed international safety standards, making them suitable for high-risk operating environments.

ISO Certification document
CE Mark Certificate
GOST Certificate
UL Safety Certificate
Explosion Proof Certification

6. Localized Application Scenarios

Each industrial application requires a specific approach to hazardous area protection. We provide tailored solutions to match local operational demands and environmental factors.

Deep Shaft Underground Mining

Underground mining operations are subject to shifts in humidity, ambient temperature, and particulate concentrations. Our YBK3 Series features reinforced junction boxes and non-sparking terminal connections to withstand continuous mechanical vibrations while driving underground mine pumps and shearers.

Refineries & Petroleum Extraction

Offshore oil platforms and onshore refineries require protection against salt spray and moisture ingress. Using high-grade sealants and multi-layer protective coatings, our YBX4 and YBX5 Totally Enclosed Fan Cooled (TEFC) motors prevent ambient moisture and corrosive gases from degrading the internal windings.

High-Volume Grain & Dust Processing

Silos and food processing plants produce dense clouds of combustible dust. The YFB3 and YFB4 Dust Explosion-Proof Motors feature specialized external heat sinks that prevent surface temperatures from reaching the ignition point of organic dust layers (Class II Div 1 / Zone 21).

7. Technical Roadmap: Smart, Efficient Ex Motors

The future of heavy-duty drive technology lies in the integration of high energy efficiency, real-time analytics, and protection systems.

Variable Frequency Speed Control

Modern process control depends on variable speed operations. Our YBBP Low Voltage Ex Motors and YVFE3 Variable Frequency Drive Motors are designed to run safely across their entire frequency range without overheating. Incorporating insulated bearings and static-dissipative grounding brushes, they prevent electrical discharge machining (EDM) path failures caused by high-frequency VFD switching harmonics.

Integrated Thermal & Soft Start Control

Starting large induction motors can create major voltage drops and high mechanical stresses. Combining our motors with Custom High Voltage Soft Start State Cabinets limits starting inrush currents and mechanical shocks. Built-in RTD thermal sensors monitor winding and bearing temperatures in real time, alerting control systems of thermal issues before they lead to shutdowns.

8. Expert Q&A: Technical Specifications & Sourcing

Technical references and common queries regarding explosion-proof induction motor integration, efficiency grades, and safety certifications.

What are the main engineering differences between Ex d (Flameproof) and Ex e (Increased Safety) motors?

Ex d (Flameproof) motors are designed with a robust enclosure capable of withstanding an internal gas explosion without deformed joints. Flame paths cool the escaping exhaust gases before they reach the outside air. Ex e (Increased Safety) motors focus on prevention. They use structural designs to prevent sparks, arcs, or dangerous surface temperatures from occurring inside the motor during normal operation or overload conditions.

How do YE4 and YE5 efficiency standards affect the operation of explosion-proof motors?

YE4 (IE4 Super Premium) and YE5 (IE5 Ultra Premium) motors feature lower winding resistance and optimized magnetic steel laminations. This reduces heat generation (I²R copper and iron loss), which improves efficiency and lowers overall operating temperatures. Cooler run states increase insulation life and safety margins in hazardous areas.

Why is variable frequency drive (VFD) compatibility a challenge for Ex motors?

Running an Ex motor at low speeds reduces the cooling capacity of shaft-mounted fans. Standard VFD waveforms can also generate high voltage spikes that stress winding insulation. SIMO's YBBP and YVFE3 series address this through reinforced insulation systems and thermal sensors linked to external safety circuits, protecting the motor across all operating speeds.

What certification is required for industrial equipment sold into Russian and Eurasian markets?

Equipment sold in these regions must meet the Technical Regulations of the Customs Union (EAC EX, formerly GOST). This ensures the electrical insulation, casing strength, and non-sparking characteristics are certified for operation in local cold climates and heavy environments.

How does a High Voltage Soft Start Cabinet protect high-output induction motors?

Direct-on-line (DOL) starts can draw up to 600-800% of the motor's rated current, heating winding coils rapidly. A soft starter adjusts the terminal voltage during startup, controlling current draw and mechanical torque acceleration to protect the motor and pump systems from structural wear.

High-Voltage and Specialized Industrial Solutions

Our complete industrial range: low-voltage premium efficiency drives, variable frequency motors, and high-output DC systems.

China YFB3 series Dust explosion-proof motor

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Custom Z series medium size DC motor

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China Y2 series compact structure high voltage AC motor

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High-Quality YE4 IE4 Three Phase Low Voltage Induction Motors

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Discount Y series high voltage three phase asynchronous motor

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Discount T Series Large Size Three-phase Synchronous Motor

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China YVFE3 Series Variable Frequency Drive Three-phase Asynchronous Motor

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