Explore our high-performance low/high voltage AC motors, hazardous area explosion-proof lines, and reliable DC heavy-duty motor configurations.
Established in 1955, Xi’an Lite SIMO Motor Co., Ltd (popularly known as LITESIMO) stands as a prominent pioneer in the mechanical manufacturing sector of China. Specializing in the end-to-end design, tooling, processing, assembly, and testing of medium-to-large high-voltage and low-voltage AC/DC electric motors, synchronous generators, and safety-certified explosion-proof powertrains, SIMO represents a top-tier manufacturing scale in the Asia-Pacific market.
Operating from our advanced industrial complex in Xi’an, Shaanxi province, we operate as a comprehensive, vertically-integrated supplier. From high-precision mold fabrication and heavy machinery structural fabrication to vacuum pressure impregnation (VPI) and full dynamic load testing, SIMO provides turnkey motor configurations that drive industries like petroleum, water conservancy, heavy metallurgy, and marine transport.
For more than 60 years, SIMO has grown alongside the global industrial grid, evolving from a regional facility into an international manufacturer.
An engineering overview of Totally Enclosed Fan Cooled (TEFC) motors, detailing ingress safety, heat management, and industrial efficiency.
Unlike open drip-proof configurations, TEFC designs prevent external ambient air from circulating inside the motor's core. Utilizing high-tensile cast iron frames, precision-machined end shields, and premium shaft seals, our TEFC enclosure motors provide IP55 and IP56 ingress protection, preventing damage from fine mineral dust, heavy downpours, and chemical mists.
Operating with a shaft-mounted external fan, TEFC motors pull cooling air across external frame ribs to dissipate heat effectively. Our engineering team optimizes this cooling path using CFD (Computational Fluid Dynamics), ensuring uniform heat distribution, minimizing hot spots, and extending the lifespan of Class F and H insulation systems.
For hazardous operations featuring explosive gas mixtures or dense dust clouds, our YBX3, YBX4, and YBX5 Series represent reliable explosion-proof motor design. These enclosures are constructed to contain any internal electrical spark or deflagration without allowing the flame to propagate to the surrounding volatile environment.
In high-performance industrial drive applications, the selection of the motor enclosure is critical for reliability. Totally Enclosed Fan Cooled (TEFC) motors are widely used due to their durability in demanding environments. By isolating the internal winding assembly, stator core, and rotor from outside atmospheric pollutants—such as silica dust, coal dust, salt-laden sea air, and corrosive chemical vapors—TEFC motors prevent early insulation breakdown and mechanical issues.
SIMO’s core engineering focuses on improving electromagnetic design to reduce physical frame sizes while optimizing power outputs. Our high-voltage series, including the YXKK, YXKS, YRKK, and YRKS lines, utilize advanced insulation treatments. Using computerized Vacuum Pressure Impregnation (VPI) with high-grade solventless epoxy resins, we ensure the stator windings are fully sealed, structurally rigid, and protected against humidity, chemical exposure, and thermal cycling stress.
With growing global focus on reducing energy consumption and operating costs, high-efficiency motors have become an industry standard. Upgrading from standard motors to ultra-premium efficiency lines (such as SIMO’s YE5 IE5 Series) helps lower total cost of ownership. By utilizing high-permeability, low-loss silicon steel laminations and optimizing stator winding slot designs, SIMO reduces rotor losses, ensuring compliance with international IEC and NEMA efficiency standards.
LITESIMO has invested in more than 1,172 sets of high-precision equipment to support consistent industrial production.
SIMO electric motors are designed to meet performance and regulatory standards across diverse industrial sectors.
In chemical processing plants where explosive vapors are present, safety is a primary priority. Our YBX3, YBX4, and YBX5 explosion-proof motors provide reliable containment in Zone 1 and Zone 2 hazardous areas, protecting personnel and plant assets.
Conveyors, ball mills, and jaw crushers operate in environments with high levels of abrasive dust. Our heavy-duty cast iron TEFC motors feature dual-lip shaft seals and reinforced end shields to prevent particulate ingress and avoid unplanned shutdowns.
Driving large-capacity boiler feed pumps, forced draft fans, and municipal water distribution networks requires high operational reliability. SIMO’s YXKK and YXKS high-voltage motors offer stable performance for continuous industrial processes.
SIMO has achieved quality certifications to meet safety and performance standards for international markets.
SIMO’s quality management processes comply with ISO9001, ISO14001, OHSAS18001, and regional regulatory frameworks including CE (EU), UL (US), GOST-R (Russia), and explosion-proof safety requirements, ensuring compliance and reliability at your installation site.
Detailed answers from our engineering team to help you select, install, and maintain high-power electric motors.
Review additional electric motor lines designed for specific low-voltage, variable-frequency, and heavy-duty DC operations.
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