Explore our cutting-edge heavy-duty AC, DC, synchronous, and certified explosion-proof motor systems manufactured to global standards.
Founded Year
Max Power Output
Expert Employees
Manufacturing Heritage
Xi’an Lite SIMO Motor Co., Ltd is an electric company, main enterprise specializing in the manufacturing of large/medium-sized, high/low voltage AC motors, DC motors, synchronous motor, and explosion-proof motor in the Chinese mechanical industry. SIMO is a comprehensive manufacturing and service supplier of motor design, manufacturing, mechanical processing, mold making, assembling.
The Company ranks TOP in China’s motor industry as to its scale of production, and has maintained fast-growing development trend for consecutive years. With a registered capital of 21.5 million RMB and fixed assets amounting to 380 million RMB, SIMO operates 3 manufacturing factories and one subsidiary factory equipped with more than 1172 sets of advanced equipment. Our powerhouse workforce includes over 260 technical engineers, 21 senior engineers, and 15 expert engineers who innovate and deliver next-generation propulsion systems daily.
From a state-owned factory to a global leader in high-performance permanent magnet and industrial motor engineering.
SIMO Motor established and led by the government, pioneering industrial machine solutions in China.
Relocation to the new production plant in Xi'an City, expanding manufacturing capabilities to meet industrial demands.
Officially renamed to Xi'an Motor Factory after a series of strategic state-led acquisitions and industrial integrations.
Successfully reformed into a limited company from a state-owned factory, welcoming global technical standards.
SIMO Motor Group established, structuralizing 14 specialized subsidiaries under modern corporate governance.
Moved manufacturing base to a high-tech, advanced new plant equipped with modern testing labs.
Transitioned brand name to Tech Full Simo Motor, optimizing global distribution networks.
Continuing the journey as one of the best global motor manufacturers, supplying premium solutions globally.
An Engineering & Procurement Director's Guide to High-Performance Permanent Magnet Technology.
Modern Permanent Magnet Synchronous Motors (PMSMs) rely heavily on advanced rare-earth magnet materials, such as Neodymium-Iron-Boron (NdFeB) and Samarium-Cobalt (SmCo). These elements deliver exceptionally high magnetic energy products (BHmax), allowing for substantial volume reduction and lighter structural profiles in rotating machinery. Unlike traditional squirrel-cage induction motors, a permanent magnet rotor maintains synchronous rotation with the stator field without requiring active rotor currents. This eliminates rotor electrical resistance losses (copper losses), translating directly to a major efficiency boost.
For industrial applications, choosing a motor supplier goes beyond pricing. Industrial procurers must analyze the raw magnetic composition, structural coatings (such as Epoxy, Ni-Cu-Ni, or Zinc), and thermal characteristics (reversible temperature coefficient of remanence, $a_{Br}$, and coercivity, $a_{Hcj}$). A failure in thermal calculations leads directly to irreversible demagnetization under high load, causing system-wide failures and expensive downtimes.
Remanence (Br): Measures magnetic field strength; directly influences motor torque density.
Intrinsic Coercivity (Hcj): Resistance to demagnetization; determines the thermal and load limits of the system.
Max Operating Temp: Grades range from M (100°C) and H (120°C) to EH (200°C) or AH (220°C) for extreme industrial applications.
By leveraging China's robust rare-earth integration—controlling over 70% of global mining and 90% of magnet refining—SIMO offers structural cost advantages and supply chain continuity, insulating buyers from international geopolitical disruptions.
SIMO products align with REACH, RoHS, CE, UL, and GOST requirements. Our permanent magnet assemblies undergo strict non-destructive testing, ensuring safe deployment in hazardous zones (ATEX/IECEx certifications).
With tightening environmental policies globally (EU MEPS, US DOE), our permanent magnet technologies easily exceed the threshold for Ultra-Premium Efficiency (IE4) and Super-Premium Efficiency (IE5) benchmarks.
Spanning 34 major series, 1,800+ varieties, and 19,500+ specifications ranging from 0.35kW to 25,000kW.
| Motor Series Type | Description & Key Technical Models | Common Industrial Application Fields | |
|---|---|---|---|
| High-Efficiency High-Voltage Motors | YX, YXKK, YXKS series high voltage high efficiency three-phase asynchronous motors; YR, YRKK, YRKS wound rotor motors. | Mining mills, massive ventilation systems, power plants, steel mills, municipal waterworks. | 0.35kW to 25,000kW |
| Ultra-Premium Low-Voltage Induction | YE3, YE4, YE5 high-efficiency series asynchronous motors; YVFE3, YVFE4, YVFE5 variable frequency speed motors. | Manufacturing assembly lines, HVAC systems, standard pumps, oil field compressors. | IE3, IE4, IE5 compliant |
| Explosion-Proof Asynchronous Motors | YBX3, YBX4, YBX5 series explosion-proof high/low voltage three-phase asynchronous motors. | Chemical production plants, hazardous zone gas installations, underground coal mining operations. | ATEX / IECEx Certified |
| Synchronous Motors & Generators | T, TD, TK, TDMK series synchronous motors; TFW350-5000KW series large synchronous generators. | Industrial grinders, heavy mine mills, power generation, reciprocating compressor rigs. | High Power Densities |
| Direct Current (DC) Machine Series | Z2, Z4 and Z series DC motors. | Metal rolling mills, paper manufacturing machinery, rubber extruders, electric locomotives. | Precision Speed Control |
Our production facilities employ advanced testing equipment to assess stator winding insulation, rotor dynamic balance, magnetic flux distributions, and overall thermal rises. With over 1172 sets of testing and manufacturing machinery, SIMO guarantees that every motor meets high reliability standards before shipping. Our 260 technical engineers provide customized shaft dimensions, special flange designs, and optimized magnet layouts to meet your unique torque profiles.
Validating compliance, structural safety, and engineering excellence across international borders.
SIMO has passed ISO9001 Quality System Certification, EU "CE", US "UL", Russian "GOST", and more. Our high-efficiency systems are widely applied in electricity, coal, petroleum, mining, metallurgy, railway, transportation, chemical industry, agriculture, water economy, aviation, navigation, and high technologies globally.
Optimizing electric drivetrains for specific site environments, localized grids, and strict engineering parameters.
Ore processing facilities face high-impact loads and dust ingress. Our custom TDMK series synchronous motors are built with high overload margins and specialized enclosures. Utilizing permanent magnet alignment or excitation controls, they run directly on large milling machinery (ball mills, SAG mills). This reduces transmission gear losses and improves power factor efficiency, lowering utility penalties on mining operations.
Refineries, chemical processing areas, and offshore oil platforms require explosion-proof motor systems. SIMO's YBX5 series totally enclosed Ex motors feature flameproof enclosures that contain internal explosions, preventing the ignition of ambient hazardous gasses. The integration of permanent magnets maintains a cool running temperature on the rotor, reducing external thermal values to meet strict temperature class standards (T4, T5, T6).
For operations with variable flow rates (large water treatment pumps, ventilation blowers), induction motors run at low efficiencies under partial loads. Our YVFE series variable frequency motors maintain excellent efficiency across their entire speed range. Pairing them with high-voltage soft starters or advanced VFD controllers protects critical mechanics from grid current spikes and torque stress during startup.
While AC motors dominate general applications, heavy industrial rolling mills, paper manufacturing machinery, and extruders rely on DC motors for precise torque control down to zero speed. SIMO's Z4 DC motors offer robust performance and wide speed variation ranges, making them ideal for heavy steel manufacturing plants.
Addressing key engineering considerations, compliance questions, and international shipping protocols.
We select high-grade NdFeB or SmCo magnets with high Intrinsic Coercivity (Hcj) ratings (typically SH, UH, EH, or AH grades). Additionally, our engineering team uses computer-aided finite element analysis (FEA) to model internal thermal profiles. This keeps the magnet temperature well below its structural demagnetization threshold, even under high-duty operations.
YE4 (IE4 Super Premium) and YE5 (IE5 Ultra Premium) motors reduce energy losses by 15% to 30% compared to standard IE3 induction systems. This reduces operating costs, allowing high-duty industrial equipment to pay back the initial capital outlay within months of continuous operation.
Yes. Our motors hold standard certifications, including EU CE, US UL, and Russian GOST. We provide complete documentation packages, motor test reports, and compliance certificates to simplify custom clearance and system integration.
With 260 technical engineers on staff, SIMO provides custom structural options. This includes customized shaft configurations, tailored flange dimensions (B3, B5, V1, etc.), specialized cooling options (IC411, IC611, IC81W), and protection classes (IP54, IP55, IP56, or IP65).
Complete your supply chain profile with our advanced industrial motor series, speed regulators, and control accessories.
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