Explore our premium grade heavy-duty dynamic electric drive systems certified for hazardous operation environments.
Global industrial settings demand unprecedented levels of performance, efficiency, and robust process safety. Energy consumption in industrial motor-driven systems constitutes roughly 70% of total electrical power consumed by plants worldwide. With the introduction of the international standard IEC 60034-30-2 defining the IE5 "Ultra-Premium" efficiency level, the industrial electric motor market is undergoing a seismic paradigm shift.
Operating an electric motor in explosive gas atmospheres or dust-prone environments (Zone 1, Zone 2, Zone 21, and Zone 22) places complex requirements on thermodynamic management. High efficiency in IE5 motors directly correlates with lower internal operating temperatures. Because losses (stator copper loss, rotor slip loss, windage, and magnetic core loss) are minimized, the heat dissipation demands are radically lower. This prevents surface temperatures from reaching critical ignition thresholds, providing a dual advantage: structural process safety and carbon footprint reduction.
For operations utilizing high-power industrial machinery, adopting IE5 Ex-rated motors translates to an immediate reduction in total cost of ownership (TCO) through energy conservation, prolonged winding life, and lower cooling requirements.
A comprehensive powerhouse in industrial motor engineering, manufacturing, and support services.
Xi'an Lite SIMO Motor Co., Ltd is an industry-leading electric motor enterprise, specializing in the design, development, and manufacturing of large/medium-sized, high/low voltage AC induction motors, synchronous motors, DC drives, and high-security explosion-proof motors within the Chinese mechanical manufacturing sector.
SIMO operates as a comprehensive design-to-service supplier integrating advanced mechanical processing, high-precision metal stamping and mold tooling, automatic winding, thermal processing, testing, and system assembly. The corporation consistently ranks at the top of China's motor manufacturing sector with a scaling industrial presence, robust supply chain network, and rapid technological development year-on-year.
Our advanced motor portfolio encompasses over 34 major design series, 1,800 distinct product varieties, and over 19,500 sizing specifications. Power capacity ranges from 0.35 kW all the way to 25,000 kW, satisfying the power requirements of multi-scale industrial complexes.
Supported by 260 technical engineers, including 21 senior experts and 15 state-level senior designers driving innovation in magnetic design and high-efficiency low-loss components.
Utilizing more than 1,172 sets of high-precision heavy-duty manufacturing and testing machinery, and operating with fixed assets valued at over 380 Million RMB.
With over 60 years of industrial motor manufacturing history, SIMO has evolved alongside global industrial progress.
SIMO Motor was officially established under state leadership, pioneering standard heavy-industry electric components.
Relocated manufacturing facilities to a larger hub in Xi'an City, expanding initial production outputs.
Formally integrated several regional engineering facilities, changing our official name to Xi'an Motor Factory.
Successfully transitioned from a state-owned factory into a highly responsive limited liability company structure.
Formed the comprehensive SIMO Motor Group, consolidating control over 14 distinct specialized subsidiaries.
Shifted core operations to a newly constructed high-technology, modernized factory space designed for precision automation.
Acquired and restructured as Tech Full Simo Motor, establishing a strong international footprint in global supply markets.
Continuing the engineering trajectory to be one of the global leaders in premium efficiency and custom industrial motor design.
Addressing the complex engineering parameters and commercial considerations of multi-national procurement teams.
Processing oil, natural gas, and hazardous chemical by-products requires robust flameproof protection (Ex d, Ex de). SIMO's high-efficiency lines (such as YBX3, YBX4, and custom YBX5) ensure safety under extreme operating loads, with strict compliance with temperature limits (T4/T5/T6).
Coal processing, grain storage facilities, and agricultural mills create dust explosive mixtures. Our dust explosion-proof models (YFB3, YFB4 series) feature specialized enclosure seals (IP65/IP66) to prevent particulate penetration, meeting international dust-safety standards.
Aerodynamic processes in mining ventilation shafts and major municipal water projects consume megawatts of energy. Implementing YE4 and IE5 low-voltage and high-voltage motors reduces plant energy footprints and improves system uptime in continuous-duty applications.
Procurement departments face challenges including logistics instability, changing standards, and design variations. Xi'an Lite SIMO Motor mitigates these through:
By upgrading a 250 kW fan drive motor from standard efficiency (IE2) to Ultra-Premium Efficiency (IE5) operating 8,000 hours per annum:
| Standard IE2 Motor Loss Rate: | ~ 6.2% |
| IE5 Ultra-Premium Loss Rate: | ~ 3.1% |
| Annualized Electricity Savings: | ~ 62,000 kWh |
| CO2 Carbon Equivalent Reduction: | ~ 43 Metric Tons / year |
A breakdown of motor designs, cooling types, and engineering parameters that ensure certified performance.
The manufacturing process of high-efficiency explosion-proof motors involves balancing high magnetic flux density with safety constraints. Modern IE5 motors use permanent magnets (PMAC) or Synchronous Reluctance (SynRM) designs to eliminate rotor I²R losses entirely. Reducing rotor losses lowers operating temperatures, which is critical for meeting strict explosive environment temperature classifications.
| Series Type | Efficiency Class | Flame Protection Class | Cooling Configuration | Primary Industrial Use Cases |
|---|---|---|---|---|
| YBX3 Series | IE3 Premium | Ex d I Mb / Ex d IIB T4 Gb | IC411 Totally Enclosed Fan Cooled | Chemical refineries, pipeline liquid distribution pumps, fan controls. |
| YBX4 Series | IE4 Super-Premium | Ex d IIC T4 Gb / Ex tD A21 IP65 | IC411 Fan Cooled | Deep shafts, chemical mixing vessels, fuel offloading terminals. |
| YBX5 / IE5 Ex Series | IE5 Ultra-Premium | Ex db IIC T4/T5 Gb / Ex tb IIIC | IC411 / IC416 VFD Auxiliary Cool | High energy usage fans, main oil pump drives, high capacity gas compressors. |
| YFB3 / YFB4 Series | IE3 / IE4 | Ex tD A21 IP65 T135°C | IC411 Self-Ventilated | Grain transport elevators, coal pulverizers, cement milling plants. |
| YBBP Series | IE3 / IE4 Variable Speed | Ex d IIB / IIC T4 Gb | IC416 Independent Cooling Fan | Variable torque setups, constant pressure pumping loops, marine propulsion drives. |
Global operations require motors that comply with international safety standards. SIMO products undergo rigorous certification to ensure compatibility with domestic and international safety frameworks.
We maintain certified compliance with the ISO9001 Quality System, European CE directives, Underwriters Laboratories (UL - USA), Russian GOST standard, and the Chinese CNEx system. Every manufacturing phase, from laminating raw steel coils to high-potency insulation impregnations and load tests, is documented. This guarantees that each motor dispatched to chemical facilities or mines meets its certified protection rating.
Ensuring maximum system availability through commissioning assistance and field service capabilities.
Incorrect alignment or grounding of flameproof systems can compromise safety. Our engineers assist your local field installation teams to ensure correct alignment, vibration monitoring setups, and insulation checks prior to commissioning.
We supply replacement bearing assemblies, custom winding kits, and terminal junction plates. Our diagnostics team helps set up predictive maintenance schedules based on temperature trends and acoustic profiling.
Running high-efficiency motors on Variable Frequency Drives can introduce harmonic current issues. We customize shaft grounding systems and install insulated non-drive end bearings (NDE) to prevent bearing pitting and extend component life.
Answers to common questions regarding standards, structural characteristics, and import requirements.
An IE5 Ex-rated motor uses specialized materials and design features to ensure safety and efficiency. It incorporates thin, high-grade silicon steel laminations to reduce magnetic losses, optimized winding fill factors, and often rare-earth permanent magnets or Synchronous Reluctance rotors to eliminate rotor losses. For explosion protection, the motor features a flameproof enclosure designed to withstand internal explosions without igniting the surrounding atmosphere, together with tight flame paths and reinforced terminal boxes.
Yes. Because modern electric motors conform to global standard dimensions (IEC/NEMA frame configurations), a Chinese IE5 Ex motor can replace Western equivalents. Users must verify the frame height, shaft diameter, flange style, and explosion classification (e.g., Ex d IIC T4 vs. Ex de). SIMO motors are designed to match international standards for straightforward replacements.
Gas explosive environments require flameproof (Ex d / Ex db) or increased safety (Ex e) designs that manage internal energy and prevent spark propagation. Dust environments rely heavily on sealing (IP65 or IP66 dust-tight ratings) to prevent combustible particles (like coal, grain, or metal dusts) from entering the hot interior of the motor. Motors must be certified specifically for the hazard type: Ex d for gases and Ex tD / Ex tb for dusts.
The temperature class (T1 through T6) defines the maximum outer surface temperature the motor can reach under operating or fault conditions. If a chemical has an ignition temperature of 150°C, the motor must be rated T4 (135°C limit) or higher (T5/T6) to prevent surface heat from initiating an explosion, regardless of the motor's internal operating temperature.
SIMO maintains an accredited testing laboratory that runs full-load heat runs, dynamometer testing, noise and vibration checks, and high-voltage insulation tests. All manufacturing processes are documented under ISO9001 and are subject to regular audits by international certification bodies like UL, TUV, and GOST agencies.
Explore our specialized range, including high-voltage induction drives, variable frequency systems, and DC machinery.
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