High-efficiency, explosion-proof, and variable frequency three-phase systems designed to minimize operational downtime and reduce carbon footprints.
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.
Six decades of engineering milestones, evolving from a local state workshop to a globally recognized heavy-duty motor manufacturing group.
Why leading global EPCs, mining conglomerates, and utility enterprises choose SIMO for critical motor infrastructure.
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.
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.
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:
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.
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.
A visual tour of our production facilities, highlighting our precision winding, stator pressing, and high-voltage motor frames.




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






Expert technical insights regarding high-voltage motors, variable-frequency configurations, and customization options.
Medium and high-voltage slip-ring, squirrel cage, flameproof, and direct current motor solutions engineered for continuous duty.