Explore our diverse range of heavy-duty industrial electric motors. Backed by state-of-the-art engineering, high insulation capability, and comprehensive explosion-proof certifications.
Xi’an Lite SIMO Motor Co., Ltd stands as an elite power-house and a pivotal enterprise in the Chinese mechanical industry. We specialize in the development, engineering, and manufacturing of large/medium-sized, high/low voltage AC motors, heavy-duty DC motors, high-torque synchronous motors, and critical explosion-proof (Ex Proof) motors.
SIMO operates a comprehensive, highly integrated supply chain that spans across research and development, casting, precision CNC machining, tool and mold fabrication, robotic winding, vacuum pressure impregnation (VPI), and stringent performance testing. Our scale of production and technical innovation consistently places us at the forefront of global electric motor manufacturing, facilitating high reliability for global industrial systems.
"Safety in hazardous zones is non-negotiable. Our explosion-proof motors are meticulously engineered to prevent internal combustion from escaping the enclosure and triggering catastrophic environmental explosions."
Explosion-proof motors represent the pinnacle of protective engineering. Here is how modern safety standards and efficiency initiatives are shaping the global market.
With tightening environmental, safety, and occupational health regulations (such as ATEX, IECEx, UL, and GOST), industrial facilities are switching legacy motors to modern high-efficiency, certified explosion-proof units. Procurement teams now look beyond purchasing costs, calculating Total Cost of Ownership (TCO), thermal optimization, and energy savings over 15 to 20-year cycles.
Industrial locations in petrochemicals, mining, grain silos, and chemical processing present critical combustible environments. The YFB3 and YFB4 series represent advanced dust explosion-proof profiles (Ex tb, Ex tc), guaranteeing that external surface temperatures remain low even in thick dust accumulation, preventing spontaneous combustible ignition.
Efficiency standards are transforming the commercial landscape. Transitioning from standard IE3 to YE5 (IE5 Ultra Premium Efficiency) motors reduces carbon footprint, drops electricity draw, and maintains operation stability in challenging ambient environments, helping industrial plants achieve compliance with net-zero target regulations.
Xi'an Lite SIMO Motor is built on reliable historical milestones, robust infrastructure, and certified industrial capacity.
A continuous progression from a government-directed factory to a modern global powerhouse of motor engineering.
SIMO Motor was established under state guidance, starting a long history of design and manufacturing in heavy engineering.
Officially renamed to Xi'an Motor Factory after a series of strategic acquisitions, integrating regional technical capabilities.
Reformed from a state-owned factory into a highly responsive, modern corporate structure, enhancing operational efficiency.
Relocated to a new state-of-the-art facility in Xi'an's high-tech zone, integrating automated CNC tooling and vacuum pressure impregnation systems.
Consolidated as an international supplier, providing tailored high/low-voltage and explosion-proof motors across Europe, the Americas, and Asia.
Maintaining stable production cycles in the heavy industrial motor market requires a robust, integrated supply chain. At SIMO, we leverage China's advanced Industry 4.0 infrastructure to secure raw materials and components, insulating our production timelines from global supply chain volatility.
By using highly automated CNC machining lines, automated rotor balancing systems, and computer-controlled testing platforms, we ensure that every motor meets safety and tolerance guidelines. This level of supply chain control helps us deliver reliable, high-performance motors at a competitive price point, without compromising on quality or engineering standards.
From low-voltage variable-frequency drives to multi-megawatt high-voltage systems, our product lineup is built for high demanding industrial applications.
Our Y, YX, YXKK, and YXKS series are designed for heavy-duty applications. Capable of voltages up to 10kV and power ratings reaching 25,000 kW, these motors run water pumps, heavy ventilation fans, compressor blocks, and metal grinders in power plants and major refineries.
The YBX3, YBX4, and YBX5 series feature flameproof enclosures that keep internal sparks from igniting surrounding explosive gases. Combined with the dust-tight design of the YFB3 and YFB4 series, they are built for safe operation in hazardous petrochemical and coal mining zones.
Built for applications requiring precise torque and speed control over a wide range. The Z2, Z4, and custom Z-series DC motors are the preferred choices for metallurgical rolling mills, rubber extruders, and heavy mining hoists.
Every motor we produce is tested to meet international safety and environmental regulations. Our quality management systems are certified to several major standards.
SIMO motors are deployed globally across demanding and high-hazard operating environments.
In locations handling volatile organic compounds (VOCs) and petroleum vapor, SIMO YBX4 explosion-proof motors drive critical extraction pumps and ventilation equipment, preventing potential internal sparks from igniting external hazardous gases.
Underground operations deal with constant exposure to combustible coal dust and methane gas. Our heavy-duty dust explosion-proof motors (YFB3/YFB4 series) are designed to prevent dust from entering the housing, keeping motor surface temperatures below dust ignition limits.
For municipal water distribution networks and cross-country oil pipelines, SIMO's high-voltage asynchronous motors (like the YRKK and YKS series) provide the high power and torque needed to keep heavy pumps running over extended periods.
Technical insights into buying, installing, and maintaining industrial explosion-proof motors.
Flameproof (Ex d) motors are designed to contain any internal explosion without allowing the flame to escape and ignite the surrounding explosive gas. Dust-ignition-proof (Ex t) motors focus on preventing combustible dust from entering the enclosure, while also keeping the outer surface temperatures below the threshold that could ignite a dust layer.
These series correlate with different energy efficiency tiers under China's GB18613-2020 standard and IEC 60034-30-1. The YBX3 series meets IE3 standards, the YBX4 corresponds to IE4 high efficiency, and the YBX5 series meets IE5 ultra-premium efficiency standards, helping to significantly reduce operating energy costs.
Our standard configurations are rated for operation within a -15°C to +40°C temperature range. However, we can custom-engineer motors with specialized insulation classes and bearings to support extreme environments ranging from -40°C up to +60°C.
VPI eliminates air pockets within the stator insulation winding using a combination of vacuum pressure and thermosetting resin. This process increases dielectric strength, improves heat dissipation, and prevents moisture entry, which helps extend the motor's operating life.
Yes, models such as the YJP and YVFE series are designed specifically for VFD operation. They feature insulated non-drive end bearings to protect against shaft currents, along with independent cooling fans to maintain safe operational temperatures at low speeds.
Explore the remainder of our industrial product line, including high-voltage induction machines, custom soft-starters, and DC drive configurations.
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