Discover our signature line of heavy-duty AC, DC, Synchronous, and Explosion-Proof motors engineered for maximum runtime and efficiency.
Xi’an Lite SIMO Motor Co., Ltd (LITESIMO) stands as a prominent pioneer and premier manufacturing hub in the Chinese mechanical and electrical machinery industry. Over decades, LITESIMO has evolved into a comprehensive system provider specializing in the development, mechanical processing, mold manufacturing, precision assembly, and global commissioning of medium, large, high-voltage, low-voltage AC/DC electric motors, synchronous generators, and specialized explosion-proof motors.
Maintaining one of the largest scales of production in the domestic motor sector, LITESIMO serves as a backbone enterprise delivering system reliability and energy-saving operations to vital industries around the globe. Our client-centric design ethos ensures that every heavy-duty power plant we construct is tailored to survive under extreme operational duress.
For more than 60 years, LITESIMO has navigated the frontiers of industrial motor development, evolving from a state-owned factory into a global powerhouse.
SIMO Motor is established under state leadership, pioneering heavy machinery manufacturing in China.
Relocated to a dedicated manufacturing plant in Xi'an City to expand heavy-duty infrastructure manufacturing.
Renamed to Xi'an Motor Factory following strategic industrial consolidations and capacity integrations.
Successfully reformed from a state-owned enterprise into a agile limited liability corporation.
Establishment of SIMO Motor Group, consolidating 14 specialized subsidiaries across different engineering disciplines.
Commissioned a state-of-the-art, high-tech industrial complex equipped with advanced testing beds.
Officially rebranded to Tech Full Simo Motor, optimizing global supply channels and engineering services.
Continuous expansion of high-voltage variable frequency drives and ultra-premium IE5 standard products.
How LITESIMO Heavy Duty Electric Motors power the fundamental pillars of modern global infrastructure.
Underground mining operations rely on robust flameproof motors like the YBK3 series and custom TDMK asynchronous mill motors. Our systems drive ball mills, heavy conveyors, and ventilation fans under continuous high-dust and extreme humidity conditions, reducing unplanned operational downtime.
Our YBX3, YBX4, and YBX5 explosion-proof high/low voltage motor series provide spark-free operation in zones containing explosive gases. Engineered to meet strict IECEx, ATEX, and UL requirements, these systems guarantee safety across critical pumps, compressors, and blowers.
For large coal-fired, thermal, hydro, and nuclear power utilities, LITESIMO supplies high-voltage induction and synchronous motors (such as YX, YXKK, and YRKK series). These motors drive draft fans, feedwater pumps, and coal pulverizers with dynamic efficiency exceeding IE4 and IE5 guidelines.
LITESIMO high-voltage vertical and horizontal induction motors power municipal water supply systems, agricultural irrigation pipelines, and drainage networks. Designed with advanced anti-corrosion properties and optimized cooling enclosures (YXKS series) for uninterrupted life cycles.
For high-torque, variable-speed applications such as steel rolling mills, LITESIMO's Z2, Z4, and custom large Z series DC motors provide excellent speed regulation, high starting torque, and structural resilience to withstand severe load fluctuations and high temperatures.
High inertia loads in cement manufacturing (kilns, crushers, and raw mills) are driven by our YR, YRKK, and YRKS slip ring (wound rotor) motors. They offer superior starting torque with minimal starting current impact on local power grids.
In heavy-duty industries, purchasing an electric motor is a capital expenditure that impacts operational safety and long-term energy costs. At LITESIMO, our engineering capability is backed by a dedicated team of 21 senior engineers and 15 expert engineers. With over 380 million RMB in fixed assets and advanced diagnostic facilities, we guarantee that our technical specifications, test reports, and compliance data are transparent, reliable, and strictly verified to meet international standards (ISO9001, CE, UL, GOST, and Ex certificates).
A glimpse inside our specialized production facilities showing our range of heavy-duty coils, shafts, and precision components.
Operating globally means complying with stringent safety, environmental, and performance metrics across multiple jurisdictions.
LITESIMO electric motors are certified to conform to international standards, including ISO9001 Quality System Certification, European Union "CE" marking, United States "UL" standards, and Russian "GOST" safety metrics. Furthermore, our explosion-proof motor systems have passed ATEX and IECEx verifications, ensuring safe operation in hazardous environments globally.
With a comprehensive product matrix covering 34 major series, 1,800 varieties, and over 19,500 specific configurations, our power outputs range from 0.35kW to 25,000kW. This adaptability ensures compliance with various local grid architectures, from 380V up to 13.8kV, operating at 50Hz or 60Hz.
How LITESIMO is driving the future of electric motor technology through high-efficiency designs and smart systems.
Aligning with carbon-neutrality initiatives, LITESIMO's YE5 series asynchronous motors and permanent magnet synchronous motors are engineered to meet the IE5 standard. By reducing internal losses, we help high-load industrial plants cut operational carbon emissions and lower utility costs.
Our heavy-duty high-voltage motors are increasingly equipped with integrated vibration sensors, thermal RTDs (Resistance Temperature Detectors), and current monitoring. This enables predictive maintenance, notifying operators of bearing wear or winding temperature spikes before failures occur.
With our YVFE3, YVFE4, and YVFE5 series variable speed motors, we deliver optimized frequency response profiles. They allow stable continuous torque down to very low speeds, suitable for automated cranes, belt conveyors, and complex process manufacturing pipelines.
Answers to critical engineering questions regarding the application, selection, and maintenance of heavy-duty electric motors.
A: The Z2 and Z4 series are both high-quality DC motors, but they cater to different system architectures. The Z2 series is a traditional, robust design widely used in general industrial applications requiring constant torque or constant power speed regulation. The Z4 series is designed to be compact and is compatible with static rectifier power sources (such as SCR drives). The Z4 series features a fully laminated stator frame that tolerates rapid current changes and high dynamic loads, making it suitable for modern, fast-responding steel rolling mills, paper machinery, and rubber extruders.
A: Cement mills and large crushers require massive starting torque to overcome high system inertia. Standard squirrel-cage induction motors pull high starting current from the grid, which can cause voltage drops and stress the windings. Wound rotor motors (YR, YRKK, YRKS) allow external resistance to be inserted into the rotor circuit during startup. This increases starting torque while keeping starting currents low. Once the motor reaches operating speed, the slip rings are short-circuited, and the motor runs efficiently.
A: All three are totally enclosed, fan-cooled (TEFC) flameproof induction motors designed for hazardous zones (Class I, Div 1 & 2 / Zone 1 & 2). The primary difference lies in their energy efficiency classifications. YBX3 corresponds to the IE3 premium efficiency level. YBX4 achieves the super-premium IE4 efficiency standard, and YBX5 meets the ultra-premium IE5 standard. Higher efficiency versions utilize optimized copper slot fill designs, premium magnetic steel laminations, and cooling profiles to minimize internal heat generation, enhancing safety in hazardous areas.
A: High-voltage soft start cabinets manage the initial inrush current and torque ramp-up of large motors (typically 3kV to 10kV). By gradually ramping up voltage, the soft starter reduces mechanical stress on motor shafts, couplings, and gearboxes. It also protects the power distribution system from transient voltage sags, prolonging the lifespan of both the motor and connected electrical infrastructure.
A: The cooling design depends on the operating environment. The YKS series features a water-to-air cooling system (IC81W standard), which is suitable for hot environments or enclosed spaces where ambient air is dirty or unavailable. The YRKK series typically utilizes an air-to-air heat exchanger (IC611 cooling) mounted on top of the motor. This air-to-air system is simple, reliable, and requires minimal maintenance, provided there is sufficient ambient airflow.
Explore our high-voltage starters, flameproof options, and high-torque synchronous motor lines.
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