Xi’an Lite SIMO Motor Co., Ltd is an electric company and a main enterprise specializing in the manufacturing of large/medium-sized, high/low voltage AC motors, DC motors, synchronous motors, and explosion-proof motors in the Chinese mechanical industry.
As a comprehensive manufacturing and service supplier, SIMO integrates motor design, manufacturing, mechanical processing, mold making, and full-scale assembling under one vertical system. The Company ranks TOP in China’s motor industry as to its scale of production, and has maintained a fast-growing development trend for consecutive years, delivering state-of-the-art power drive systems to heavy industries worldwide.
"By integrating precision mechanical processing with advanced electromagnetic design, SIMO delivers robust performance, higher operational safety margins, and maximum energy efficiency for the most demanding heavy-duty applications."
Founded in 1955 originally, SIMO has grown through state reformations, technological iterations, and asset acquisitions to establish itself as a premier industrial supplier.
SIMO Motor established and led by the Chinese government to support early industrial automation infrastructure.
Moved to the new customized industrial manufacturing plant in Xi'an city to expand production capacity.
Changed name into Xi'an Motor Factory after a series of targeted acquisitions and vertical integrations.
Reformed into a highly competitive limited liability company from the previous state-owned factory model.
SIMO Motor Group established, scaling up operations with 14 specialized subsidiaries.
Moved to a modern high-tech and advanced new plant equipped with automated precision machinery.
Formally changed name into Tech Full Simo Motor, aligning corporate strategy with international trade.
Pushing industrial boundaries to remain one of the best heavy-duty motor manufacturers on the global stage.
At Tech Full Simo Motor, our R&D and manufacturing systems cover all types of motors. Our engineering department consists of more than 260 technical engineers, including 21 senior engineers and 15 expert engineers. This core group focuses on custom mechanical designs, electromagnetic optimizations, insulation reliability, and thermal dynamics modeling.
With a massive portfolio of 34 major series, more than 1,800 varieties, and more than 19,500 specifications, our power range spans from 0.35kW to 25,000 kW. Our primary motor lines include high-efficiency three-phase asynchronous motors, wound rotor high-voltage motors, ultra-premium efficiency motors, variable frequency high/low voltage motors, explosion-proof motors, large synchronous generators, DC motors, and specialized synchronous motors such as the T, TD, TK, and TDMK series.
Synchronous motors are vital in heavy industrial applications requiring constant speed under varying load conditions, high power factor correction, and optimized efficiency. Below, our engineers break down the localized applications, technical roadmaps, and the structural advantages of our supply chain.
In regions such as North America, South America, and Central Asia, heavy industries rely on synchronous motors for highly specialized machinery. The TDMK series is widely used for heavy mining mills (grinding, ball, and rod mills) where high starting torque and low operating speeds are necessary. In Europe and the Middle East, our explosion-proof synchronous motors support municipal water distribution pipelines, oil refineries, and large-scale gas compressors. These localized scenarios benefit from synchronous motors' ability to act as synchronous condensers to improve grid-wide power factors, directly lowering operating expenses.
The future of synchronous motors lies in digital integration, permanent magnet (PM) excitation hybrid designs, and ultra-high efficiency topologies (beyond IE5). SIMO is investing heavily in variable-frequency synchronous motor drive designs (using the YVFE3 / YJP series controls) to ensure smooth starts without power grid disruption. We are also integrating IoT sensors directly into the stator core to monitor thermal performance, bearing vibrations, and coil insulation breakdown in real-time. This predictive maintenance data assists industrial plants in preventing unplanned shutdowns.
Located in Xi'an—China's historical and contemporary manufacturing hub for power transmission equipment—SIMO benefits from a robust regional supply network. This includes proximity to high-grade silicon steel sheet laminations, reliable copper magnet wire sourcing, and heavy forging facilities. By managing internal mechanical processing, vacuum pressure impregnation (VPI) insulation, and balancing machines under one roof, we reduce logistics delays and offer shorter lead times than Western counterparts. This resilience mitigates raw material price volatility and secures critical components for large global projects.
While induction motors (asynchronous) are widely utilized due to their simplicity, they inherently draw reactive power from the electrical grid, lagging the power factor. This leading or lagging behavior can result in massive utility penalties for heavy industrial consumers. Custom synchronous motors, such as SIMO’s TDMK and TK series, can operate at a unity power factor (1.0) or even a leading power factor (often 0.9 or 0.8 leading).
By adjusting the DC excitation current in the rotor windings, a synchronous motor can supply reactive power back to the localized grid, compensating for other inductive loads (like smaller motors and transformers). This design significantly improves energy efficiency, voltage stability, and line loss reduction across the entire industrial facility.
To serve heavy industry on a global scale, SIMO products strictly comply with international safety, environmental, and performance standards.
We have passed ISO9001 Quality System Certification, European Union "CE", United States "UL", and Russian "GOST" certifications. Our explosion-proof and flameproof series (like the YBK3 and YBX4) meet precise safety standards for hazardous locations, underground coal mines, oil pipelines, and petrochemical factories.
For purchasing managers, electrical engineers, and factory directors seeking clarity on design parameters, voltage ranges, and installation configurations.
Synchronous motors are ideal for high-power, low-speed applications (such as mine milling, large compressors, and pulp refiners). They operate at a constant speed regardless of load changes. Furthermore, they allow for power factor correction (often leading power factor), which increases grid efficiency and helps avoid reactive power penalties from local utilities.
We offer both static thyristor excitation systems and brushless excitation systems. Brushless systems are popular in hazardous or remote areas because they eliminate slip rings and carbon brushes, reducing maintenance downtime.
Synchronous motors cannot start self-synchronously under direct-on-line (DOL) power without excessive current draw. We recommend using a high-voltage soft-start state cabinet (like our custom soft-start state cabinets) or variable frequency speed regulating controls (e.g., YJP / YVFE3 series) to limit current inrush and manage load acceleration.
We provide Class F or Class H insulation with Vacuum Pressure Impregnation (VPI) for moisture and dust protection. Cooling systems can be customized to air-to-air cooling (YXKK/YRKK), air-to-water cooling (YXKS/YRKS), or natural self-cooling depending on the ambient temperatures and installation site constraints.
Our YBK3 and YBX4 series motors are engineered specifically for hazardous areas, featuring robust flameproof enclosures that prevent internal explosions from igniting ambient gas or coal dust. They are certified under Chinese mine safety guidelines and align with global explosion-proof compliance formats.
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