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View DetailsXi’an Lite SIMO Motor Co., Ltd is an electric company, main enterprise specializing in the manufacturing of large/medium-sized, high/low voltage AC motors, DC motors, synchronous motor, and explosion-proof motor in the Chinese mechanical industry. SIMO is a comprehensive manufacturing and service supplier of motor design, manufacturing, mechanical processing, mold making, assembling. The Company ranks TOP in China’s motor industry as to its scale of production, and has maintained fast-growing development trend for consecutive years.
As an industry-leading OEM TEFC electric motor manufacturer, LITESIMO engineers solutions that meet stringent global energy policies and tough operating environments. By combining decades of manufacturing heritage with advanced finite element analysis (FEA) and modern materials, our products deliver unparalleled reliability and efficiency.
Years of Heritage
Technical Engineers
Fixed Assets (RMB)
Product Varieties
The Company was founded in 1955 originally and now has more than 60 years history of motor manufacturing and selling.
SIMO Motor established and leaded by government, focusing on basic electrical equipment repairs and manufacturing during China's early industrialization phase.
Moved to the new plant in Xi'an city, establishing the foundations for high-capacity testing and precision stator winding facilities.
Changed name into Xi'an Motor Factory after series of strategic state-led acquisitions and industrial integration to scale production.
Reformed into a limited company from a state-owned factory, transitioning to a market-driven global enterprise.
SIMO Motor Group established, scaling up with 14 subsidiaries to cover raw materials, copper extrusion, and casting.
Moved to the high-tech and advanced new plant equipped with automated winding machinery and large CNC machining centers.
Changed name into Tech Full Simo Motor, aligning corporate strategy with high-efficiency motor engineering and smart drives.
Still on the way to be one of the best motor manufacturers globally, expanding into IoT-connected smart industrial motors.
The registered capital is 21.5 million RMB. SIMO has 3 manufacturing factories, one subsidiary factory, with fixed assets 380 million RMB and more than 1,172 sets of advanced equipment. There are more than 1,200 employees, more than 260 technical engineers, including 21 senior engineers, and 15 expert engineers.
With complete testing centers certified by national standards, we perform raw material inspection, stator core loss testing, rotor dynamic balancing, and full-load type tests on high-voltage systems. Our plant has the capability of vacuum pressure impregnation (VPI) with high-grade resins to guarantee premium class F and H insulation systems, preventing early dielectric breakdowns.
Understanding Totally Enclosed Fan Cooled (TEFC) motor dynamics, heat dissipation, and mechanical design principles.
Totally Enclosed Fan Cooled (TEFC) electric motors represent the most prevalent design choice for demanding industrial applications worldwide. Unlike Open Drip Proof (ODP) motors, a TEFC motor is sealed against external atmospheric elements, preventing the free exchange of air between the inside and outside of the frame. Cooling is achieved through an external shaft-driven fan that forces air over the external ribbing or fins of the frame structure.
This design philosophy provides significant mechanical protection, limiting ingress of dust, moisture, and corrosive chemicals, making it ideal for environments like chemical plants, paper mills, cement kilns, and mines. By optimizing the thermodynamic flow of air across the cast iron or steel fins, LITESIMO's TEFC motors maintain low operating temperatures, thereby prolonging winding insulation life and bearing reliability.
Provides strong resistance to non-corrosive dust and powerful water jets, preventing internal electrical faults under hostile weather conditions.
Engineered frame aerodynamics with high-surface-area cooling fins ensure heat is quickly dissipated, preventing hotspot formations.
Precision-balanced cast iron/copper rotors guarantee minimal vibration signature, lower acoustic noise levels, and extended service intervals.
LITESIMO offers TEFC induction systems featuring cast iron frame sizes from IEC 80 up to massive custom frames. Our stator laminations utilize low-loss silicon steel to guarantee compliance with the latest high-efficiency classes (IE3, IE4, and the premium IE5 standard). By reducing core and copper losses, these motors save thousands of dollars in operating energy over their lifetime, presenting a much lower Total Cost of Ownership (TCO) for global operators.
How the industrial clustering of Xi'an enables cost efficiency, precision manufacturing, and faster delivery lead times.
China's electric motor manufacturing ecosystem is unparalleled in scale. LITESIMO, located in the high-tech industrial hub of Xi’an, utilizes this cluster effect to source premium raw materials—such as high-grade electrolytic copper, premium cast iron frames, and precision bearings—at stabilized commodity prices.
Our in-house capabilities include high-precision CNC machining centers, automated coil inserting equipment, and advanced computerized testing facilities. By keeping the critical phases of production under one roof, we eliminate intermediate delays and retain strict quality control across the manufacturing cycle.
For global distributors and industrial OEMs, this translates to shorter production cycles, reliable quality compliance, and competitive pricing. We maintain robust shipping lanes through partnerships with major maritime and continental rail logistics providers, enabling efficient dispatch to Europe, North America, Central Asia, and the Middle East.
Engineering compliance that conforms to regional regulations, safety standards, and environmental protocols.
Dimensional frameworks, shaft configurations, and mounting configurations matching both European IEC standards and North American NEMA frames.
ATEX, IECEx, and China explosion-proof certifications for safety in petrochemical, coal mining, and grain handling industries.
RoHS compliant finishes, noise reduction options, and IE3/IE4/IE5 ultra-premium efficiency to reduce carbon footprints.
SIMO passed ISO9001 Quality System Certification, EU “CE", US “UL”, Russian "GOST", and so on. Electric motors are widely applied in electricity, coal, petroleum, mining, metallurgy, railway, transportation, chemical industry, agriculture, water economy, aviation, navigation and high technologies.
How LITESIMO TEFC and heavy-duty motors are modified to excel in extreme operational environments.
In refining fields where explosive hydrocarbon gases exist, LITESIMO's YBX3, YBX4, and YBX5 explosion-proof TEFC motors are deployed. Featuring flameproof enclosures (Ex d) and sealed terminal boxes, they prevent internal sparks from igniting external hazardous atmospheres.
Operating in coal fields or rock crushers demands absolute dust protection. Our dust-proof series (YFB3 series) features heavy-duty IP65 protection, labyrinth seals, and grease relief pathways to prevent abrasive coal or silica dust from destroying dynamic rotor bearing systems.
Municipal sewage networks require high reliability. For large high-pressure pump sets, we deploy our high voltage line (YXKK and YXKS water-cooled/air-cooled motors), ensuring low winding temperature stress and trouble-free continuous operations.
Sourcing industrial motors requires an analytical balance between initial acquisition costs and running operational overheads. With energy consumption representing over 90% of a motor's life-cycle cost, investing in higher efficiency (such as IE4 and IE5) creates massive long-term yield.
LITESIMO provides comprehensive documentation including thermal curves, efficiency testing reports under partial loads, and dimensional drawing files to assist engineering procurement processes. We support custom shaft extensions, space heaters to prevent condensation, RTD winding/bearing temperature sensors, and VFD-ready configurations.
The transition toward digitalization, next-generation magnetics, and smart condition monitoring.
Global regulatory bodies are enforcing stricter minimum energy performance standards (MEPS). Moving to IE5 synchronous reluctance and permanent magnet hybrid designs reduces grid stress and industrial operating expenses.
Integrating wireless sensors on TEFC enclosures allows maintenance teams to track radial vibration and bearing temperature data in real-time, transitioning from reactive repair schedules to predictive maintenance models.
Modern pumping and ventilation loops demand speed control. Motors specifically configured with VFD systems feature enhanced thermal capabilities under low-speed operation and insulated bearings to counter electrical discharge machining (EDM) currents.
Technical details, design considerations, and service life inquiries regarding TEFC and heavy-duty electric motors.
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Lite Simo
