High-Quality Electromotor Supplier & Industrial Electric Solutions

Over 60 Years of Industry Excellence, Delivering Premium High-Efficiency AC/DC Motors & Custom Powertrain Engineering Globally

Featured Heavy-Duty Electromotors

High-efficiency, explosion-proof, and variable frequency three-phase systems designed to minimize operational downtime and reduce carbon footprints.

YBBP Low voltage explosion-proof motor
High-Quality YBBP Low voltage explosion-proof variable frequency three-phase motor Suppliers, Companies
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YVFE3 Series Variable Frequency Drive Motor
China YVFE3 Series Variable Frequency Drive Three-phase Asynchronous Motor Suppliers, Factories
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T Series Large Three-phase Synchronous Motor
Discount T Series Large Size Three-phase Synchronous Motor Suppliers, industrial
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YFB4 Dust explosion-proof motor
China YFB4 series Dust explosion-proof three-phase asynchronous motor Suppliers, Factories
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YE5 IE5 Three Phase Ultra Premium Efficiency Motor
Discount YE5 IE5 Three Phase Ultra Premium Efficiency Motors Manufacturers, Factory
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YBX4 Series Three-phase Ex motor
OEM YBX4 Series Three-phase Asynchronous Ex motors used in hazardous area Company, electric
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YE4 IE4 Three Phase Induction Motor
High-Quality YE4 IE4 Three Phase Low Voltage Induction Motors Suppliers, industrial
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Z2 series DC motor
China Z2 series DC motor Suppliers, Company
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LITESIMO: Pioneering Industrial Electromotor Innovation Since 1955

Xi'an Lite SIMO Motor Co., Ltd. is a premier manufacturing enterprise in the Chinese mechanical industry, specializing in the design, development, and system integration of large, medium, and small-sized AC/DC electric motors, synchronous systems, and explosion-proof equipment. Established under state guidance during the formative years of China's heavy industry, SIMO has evolved into a global powerhouse.

As a comprehensive supplier, SIMO manages the entire manufacturing lifecycle internally: from computer-aided electrical design (CAD/SolidWorks) and customized mechanical processing to mold making, advanced winding insulation, final dynamic balance assembly, and rigorous system-load testing. Our scale of production, technological depth, and compound annual growth rate continuously position us at the pinnacle of China’s motor sector.

Our commitment to Quality, Efficiency, and Environmental Stewardship drives our R&D efforts. With specialized teams focused on materials science, thermodynamics, and electromagnetic optimization, we help global infrastructure operations reduce energy overheads and achieve compliance with dynamic decarbonization policies.

SIMO Motor Plant View
21.5M
Registered Capital (RMB)
380M+
Fixed Assets (RMB)
1,172+
Advanced Production Equip.
1,200+
Dedicated Employees

Our Evolutionary Milestones

Six decades of engineering milestones, evolving from a local state workshop to a globally recognized heavy-duty motor manufacturing group.

1955
SIMO Motor is established and led by the Chinese government to lay the foundation for heavy industrial development.
1957
Relocated to a newly constructed manufacturing plant in the industrial zone of Xi'an to expand output capacity.
1966
Officially renamed as Xi'an Motor Factory following strategic mergers and system integrations with local machine shops.
1999
Reformed from a state-owned enterprise into a modern limited liability company, introducing agile corporate governance.
2005
SIMO Motor Group is established, encompassing 14 integrated subsidiaries, maximizing manufacturing output.
2006
Moved to a highly advanced, tech-driven new plant facility equipped with automated insulation, machining, and testing systems.
2009
Transitioned corporate branding and operations into Tech Full Simo Motor to signify its digital and high-tech alignment.
2019+
Consolidated position as an elite global motor manufacturer, implementing Industry 4.0 automation, smart monitoring, and IE4/IE5 efficiency.

China's Supply Chain & Manufacturing Superiority

Why leading global EPCs, mining conglomerates, and utility enterprises choose SIMO for critical motor infrastructure.

End-to-End Vertical Integration
From raw high-grade silicon steel laminations and oxygen-free copper coil winding to massive cast-iron stator housings, SIMO's manufacturing ecosystem eliminates third-party lead times and quality variances.
Advanced Engineering Reserve
With over 260 technical engineers, including 21 senior experts and 15 state-level mechanical design specialists, we routinely engineer customized shafts, custom IP ratings, dual-voltage configurations, and unique foot/flange alignments.
Ultra-Premium Efficiency Focus
Offering comprehensive lineups of IE4 and IE5 (Ultra-Premium Efficiency) induction motors. Our optimized rotor slot geometry and stator copper fill-factor reduce internal excitation and winding losses by up to 30%.

Technical Whitepaper: Optimizing Industrial Powertrains with Medium and High-Voltage Motors

Modern industrial plants face rising operational costs and strict emissions limits. The electric motor, which uses over 70% of total electrical energy in heavy industries like mining, oil & gas, and metallurgy, is critical for efficiency optimization. Selecting the right motor topology, voltage, protection class, and variable-speed control system directly affects profitability, safety, and equipment lifetime.

1. Electromotor Selection Matrix: High-Voltage vs. Low-Voltage

When designing large-scale pumping stations, ventilation shafts, or grinding mills, engineers must weigh the cost benefits of low-voltage (LV) systems against the performance and thermal benefits of medium/high-voltage (MV/HV: 6kV, 10kV) systems.

  • Low Voltage (<1000V): Best for applications under 315 kW. While initial purchase and installation costs are low, currents at high power ratings require thick, expensive cabling and lead to significant I2R power losses.
  • Medium/High Voltage (3kV, 6kV, 10kV): Recommended for power ratings above 200 kW, up to 25,000 kW. Higher voltage levels reduce current draw, minimizing thermal stress on windings and allowing for smaller cable cross-sections and longer runs with minimal voltage drop.

2. Explosion Protection & Environmental Safety Standards

Explosive atmospheres, containing gases or combustible dusts, require spark-free, flameproof, and dust-ignition-proof motors. SIMO YBX3, YBX4, and YFB3 series are engineered to meet strict international standards, including IECEx, ATEX, and UL requirements:

  • Flameproof (Ex d / Ex db): Built with heavy, reinforced cast-iron housings. Internal explosions are contained within the enclosure, and escape paths are designed to cool hot gases before they can ignite the external atmosphere.
  • Dust Explosion-Proof (Ex t / Ex tb): Sealed with heavy-duty gaskets (IP65+) to prevent fine dust (such as coal dust or pulverized grain) from entering the motor enclosure, while keeping exterior surface temperatures below the ignition point of dust layers.

3. The Role of Variable Frequency Drives (VFD) in Centrifugal Loads

According to affinity laws, a centrifugal pump or fan operating at 80% speed uses only about 50% of the energy needed at full speed. By matching motor speeds to actual demand using VFDs (such as the YVFE3 and YVFE4 series), plants can achieve significant energy savings. VFD operations require specialized motor insulation, like reinforced phase insulation and insulated non-drive end bearings, to prevent damage from high-frequency shaft currents.

4. Localized Application Engineering

Case Study: Mine Ventilation In underground coal mines, ventilation fans must run continuously. Using a SIMO YKK 6kV high-voltage motor with an IP55 protection rating and a specialized soft-start cabinet helps prevent high grid inrush currents, protects mechanical gearboxes, and ensures reliable airflow in harsh, dust-heavy conditions.

Advanced Manufacturing & Core Assemblies

A visual tour of our production facilities, highlighting our precision winding, stator pressing, and high-voltage motor frames.

International Standards & Quality Approvals

SIMO motors conform to top international benchmarks. Our designs pass rigorous testing protocols to ensure safe and efficient operation under demanding conditions.

Certificate 1
Certificate 2
Certificate 3
Certificate 4
Certificate 5
Certificate 6

Frequently Asked Questions

Expert technical insights regarding high-voltage motors, variable-frequency configurations, and customization options.

What makes SIMO motors suitable for explosive environments?
SIMO explosion-proof motors (such as the YBBP, YBX3, and YBX4 series) feature rugged flameproof casings and precise gap tolerances. They prevent internal sparks or combustion gases from contacting volatile external gases or dust, ensuring safe operation in Zone 1, Zone 2, Zone 21, and Zone 22 hazards.
How does SIMO support efficiency standards like IE4 and IE5?
Our YE4 and YE5 motor series utilize high-grade electrical steel and optimized copper slot fill-factors. By reducing core losses and I2R winding resistance, we minimize thermal dissipation, allowing our motors to meet and exceed IEC 60034-30-1 efficiency requirements.
Can SIMO customize motor shafts, voltages, and mounting dimensions?
Yes. With over 260 technical engineers, we design and build customized motor shafts, dynamic bearing systems (sleeve or rolling elements), and dual-voltage configurations to replace legacy machinery in existing industrial plants.
What high-voltage options are available?
We manufacture a complete range of high-efficiency, high-voltage induction motors (YXKK, YXKS, YKK, YRKK) operating at 6kV and 10kV, with output capacities ranging up to 25,000 kW for heavy industrial applications.

Heavy Industrial AC & DC Motor Range

Medium and high-voltage slip-ring, squirrel cage, flameproof, and direct current motor solutions engineered for continuous duty.

Custom Z series medium size DC motor
Custom Z series medium size DC motor Manufacturer, Suppliers
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YR/YRQ series high voltage motor
Discount YR/YRQ series high voltage three phase asynchronous motor Manufacturer, Suppliers
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OEM YKK High Voltage Motor
OEM YKK 6kV 10kV series High Voltage three-phase induction motor Supplier, industrial
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OEM YRKK high efficiency motor
OEM YRKK high efficiency 6KV or 10KV high voltage three-phase asynchronous motor Manufacturer, Factory
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China YFB3 series dust explosion proof motor
China YFB3 series Dust explosion-proof three-phase asynchronous motor Factories, industrial
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High voltage soft start cabinet
Custom High voltage soft start state cabinet Manufacturer, Suppliers
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YBX3 explosion proof motor
OEM YBX3 Three-phase low-voltage high-efficiency explosion-proof motor Factory, electric
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YBK3 Flameproof motor
China YBK3 Flameproof motor for underground coal mines Supplier, Factory
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