As a cornerstone enterprise in the Chinese mechanical and electrical industry, Xi’an Lite SIMO Motor Co., Ltd has pioneered electric motor technologies for over 60 years. Strategically headquartered in the industrial hub of Xi’an, SIMO Motor has grown into a comprehensive manufacturing and service supplier. Our operation spans all phases of electric motor development, including motor design, precision mechanical processing, mold making, assembly, testing, and lifetime technical support.
In terms of domestic production scale and market capture, SIMO consistently ranks at the top of the Chinese motor manufacturing sector. By integrating continuous technological innovation with the principles of E-E-A-T (Experience, Expertise, Authoritativeness, and Trustworthiness), we guarantee that every large/medium-sized high/low voltage AC motor, DC motor, synchronous motor, and explosion-proof motor we deliver complies with rigorous global engineering benchmarks.
Our historical timeline illustrates over six decades of continuous development, showing our rise from a state-owned enterprise to a top-tier global motor supplier.
SIMO Motor was established and led by the Chinese government to build structural industrial infrastructure.
Relocated to a newly constructed manufacturing facility in Xi'an city to expand domestic assembly lines.
Officially renamed as the "Xi'an Motor Factory" after executing several government-backed acquisitions and plant integrations.
Transitioned from a state-owned factory into a modern limited liability company, introducing agile production practices.
The SIMO Motor Group was formally established, supervising 14 specialized subsidiaries across the country.
Moved all primary lines to a high-tech, modernized industrial park featuring state-of-the-art tooling machinery.
Rebranded as Tech Full Simo Motor, optimizing R&D processes for the global international market.
Continuing our global trajectory as one of the best motor manufacturers, actively integrating IoT diagnostics and energy-saving permanent magnet topologies.
Industrial power systems are increasingly demanding higher energy conservation standards. This has pushed the transition from traditional three-phase induction systems to advanced Squirrel Cage Synchronous Motors. A squirrel cage synchronous motor (often engineered as a Line-Start Permanent Magnet Motor - LSPMSM) combines the self-starting capability of a conventional squirrel cage induction motor with the high efficiency of a permanent magnet synchronous system.
During startup, the stator windings generate a rotating magnetic field that induces current in the rotor's squirrel cage bars. This produces an asynchronous starting torque that accelerates the rotor. As rotor speed nears synchronous velocity, the magnetic pull of the internal permanent magnets locks the rotor into step with the rotating stator field, switching the motor to synchronous operation.
Unlike induction motors, which depend on a continuous slip to induce current in the rotor, a squirrel cage synchronous motor operates at exact synchronous speed. Because rotor currents drop to zero under steady-state synchronous operation, rotor copper losses are virtually eliminated. This helps the design achieve super-premium IE4 and IE5 efficiency levels.
By relying on high-coercivity NdFeB permanent magnets embedded inside the rotor core, these motors do not require reactive current from the electrical grid to establish a rotor magnetic field. The motor operates near unity power factor (frequently between 0.95 and 0.98), reducing transmission losses and lowering municipal utility demand charges.
SIMO’s specialized engineering division leverages advanced electromagnetic finite element analysis (FEA) to model transient startup behavior, magnetic saturation, and demagnetization boundaries. This engineering rigor ensures that our motors maintain high torque density and synchronous locking capabilities, even when starting under high-inertia loads like large ball mills and heavy centrifugal fans.
As industrial decarbonization goals tighten globally, SIMO Motor is focused on a technology roadmap designed to maximize efficiency, reliability, and intelligence in heavy-duty machinery.
We are working to reduce dependency on heavy rare-earth elements like Dysprosium (Dy) and Terbium (Tb). By using grain boundary diffusion (GBD) technologies, we achieve high demagnetization resistance at temperatures up to 180°C while using significantly less heavy rare earths.
Future models will feature embedded smart sensors directly within the stator slots and bearing houses. These systems monitor insulation aging, vibration signatures, and temperature changes in real-time, allowing operators to run predictive maintenance cycles through an IoT dashboard.
We are expanding our high-voltage synchronous lines to support rated voltages up to 13.8kV. These systems are designed with high dielectric strength vacuum pressure impregnation (VPI) insulation to withstand transient voltage surges from variable frequency drives.
SIMO Motor operates out of an expansive industrial park optimized for high efficiency, quality assurance, and supply chain resilience. Our manufacturing capacity is backed by significant equipment and personnel investments:
Our manufacturing facility includes 3 main production plants and 1 subsidiary factory. By keeping core processes in-house—including tooling, precision mechanical processing, VPI insulation treatment, and full-load motor testing—we minimize reliance on third-party vendors.
Additionally, our direct partnerships with local raw material suppliers, including high-grade electrical steel and premium copper wire producers, safeguard SIMO against global supply bottlenecks and ensure competitive pricing.
SIMO Motor delivers customized solutions across heavy industries worldwide, optimizing operations for efficiency, safety, and durability.
We supply specialized high-torque systems, such as our TDMK series AC synchronous motors, designed for the high-impact starter loads of ball mills and crushers. Our explosion-proof lines, including the YBK3 and YBX4 series, provide ignition safety in underground coal mines and hazardous processing environments.
To prevent accidental ignition in chemical plants, we offer certified explosion-proof variable frequency motors (YBBP series). These motors maintain tight speed control and thermal efficiency in continuous-duty pumps, compressors, and ventilation fans.
Our high-voltage three-phase asynchronous motors (such as the YKS water-cooled and YXKK air-cooled series) drive municipal water distribution and drainage networks. These designs protect critical internal components against high moisture and humidity.
To serve international buyers, engineering contractors, and OEM plant operators, SIMO Motor maintains a strict quality control system. We carry certifications for ISO9001 Quality System Certification, EU "CE", US "UL", and Russian "GOST", ensuring compliance with diverse international safety and performance standards.
For international projects, our engineering team offers comprehensive support. This includes customized rotor shaft dimensions, adjustable mounting flanges, specialized terminal box orientations, and site startup testing, ensuring smooth system integration.
Here are answers to common questions about our squirrel cage synchronous motors, high-voltage systems, and custom manufacturing processes.
A squirrel cage synchronous motor (or line-start PM motor) starts like a standard induction motor. The stator windings generate a magnetic field that induces current in the rotor's squirrel cage bars, generating starting torque. As the motor speeds up and approaches synchronous velocity, the internal permanent magnets lock into step with the stator field, initiating synchronous operation.
IE4 induction motors achieve high efficiency through material optimization but still experience rotor slip losses. In contrast, squirrel cage synchronous motors eliminate slip losses under synchronous operation, achieving super-premium efficiency (up to IE5) and maintaining high efficiency even during partial-load conditions.
We use high-coercivity NdFeB permanent magnets featuring advanced thermal stability coatings. We also run finite element analysis (FEA) to confirm that the magnets remain within safe operating limits, even during high-load startups or transient thermal peaks up to 180°C.
Every motor undergoes comprehensive testing in our facility, including winding resistance measurements, insulation resistance checks, vibration checks, noise analysis, and full-load temperature rise testing, ensuring reliable operation from day one.
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