Explore our premium grade high/low voltage AC, DC, synchronous, and explosion-proof motors custom built for heavy-duty industrial environments.
The International Electrotechnical Commission's IEC 60034 standard is the definitive global benchmark regulating rotating electrical machines. It dictates essential guidelines ranging from thermal classifications (IEC 60034-1), efficiency levels (IEC 60034-30-1), cooling methodologies (IEC 60034-6), to degree of protections (IEC 60034-5). For industrial procurement teams, engineering consulting firms, and plant operators, choosing a motor compliant with the latest revisions of the IEC 60034 protocol is vital to guarantee interoperability, operational longevity, and rigorous thermal performance under volatile loads.
Today, as global energy regulations transition toward stringent carbon reduction, the emphasis on high-efficiency ratings—from IE3 (Premium Efficiency) up to IE5 (Ultra-Premium Efficiency)—makes the technical implementation of IEC 60034 standards more critical than ever. Leading global businesses require manufacturers that not only claim compliance but back it with state-of-the-art laboratory testing, high-quality silicon steel laminations, and premium VPI (Vacuum Pressure Impregnation) winding treatment.
Originally established in 1955, Xi’an Lite SIMO Motor Co., Ltd stands as a cornerstore of the Chinese mechanical and electrical manufacturing industry. With over six decades of continuous technical innovation, the company has integrated electric motor design, complete mechanical processing, custom mold fabrication, precision winding, and comprehensive testing into a singular, highly efficient corporate entity.
SIMO's scale of production routinely ranks at the pinnacle of China’s motor sector. The company features a registered capital of 21.5 million RMB and maintains three main manufacturing facilities alongside a dedicated subsidiary factory. Backed by fixed assets valued at 380 million RMB, SIMO operates 1,172 sets of high-precision advanced production and quality testing equipment.
Our workforce features more than 1,200 specialized workers, including 260 technical design engineers, 21 senior engineers, and 15 state-level industry experts. This strong human capital allows SIMO to supply tailored OEM and ODM solutions to clients in over 40 countries, matching all relevant international engineering and efficiency guidelines.
Years of Manufacturing Heritage
Professional Employees
Sets of Advanced Equipment
Major Motor Product Series
Tracing our path from a state-governed factory in 1955 to a globally-trusted modern manufacturing powerhouse.
SIMO Motor is established and led by the Chinese government to fulfill national industrial infrastructure needs.
Relocated to a newly constructed manufacturing facility within Xi'an, significantly expanding floor space and output capability.
Renamed Xi'an Motor Factory after a series of strategic acquisitions, integrating localized machine workshops and engineering pools.
Successfully reformed from a state-owned factory into a highly responsive limited liability company, launching global exports.
Established the unified SIMO Motor Group, expanding its footprint to manage 14 specialized subsidiaries.
Completed the transition to a high-tech, advanced industrial park, featuring automated winding machines and VPI vacuum lines.
Renamed as Tech Full Simo Motor, aligning the brand with global technological engineering standards.
Solidifying its market presence as a premier global motor manufacturer, exporting heavy-duty custom motors to five continents.
Our research and manufacturing capacity covers over 34 major series, 1,800 varieties, and 19,500 distinct specifications from 0.35 kW to 25,000 kW.
Features YX, YXKK, and YXKS series high-voltage/high-efficiency motors alongside low-voltage YE3, YE4, and YE5 lines. Designed to meet or exceed IE3/IE4/IE5 requirements under IEC 60034-30-1, minimizing core losses via superior magnetic path geometries.
Includes the YBX3, YBX4, and YBX5 high/low voltage flameproof motors and YFB3, YFB4 dust explosion-proof models. Certified to operate safely in refineries, chemical storage, coal mines, and grain storage zones under Ex d IIA, IIB, or IIC configurations.
Comprising T, TD, TK, and TDMK series synchronous motors. Uniquely engineered for heavy mining mills, air compressors, and continuous duty operations, providing critical power factor correction capabilities to high-induction industrial plant grids.
Consists of Z2, Z4, and Z series medium/large DC motors. Celebrated for high starting torque and precise speed control profiles required in metallurgy extrusion lines, cement rotary kilns, marine propulsion, and paper mills.
Why are global procurement managers turning to Chinese factories like SIMO for heavy-duty motors? The answer lies in the deep vertical integration and complete supply chain efficiency of our Xi'an industrial base. In contrast to fragmented assembly plants, SIMO controls every stage: from processing raw steel laminations and dynamic rotor balancing, to thermal winding tests and custom shell casting. This consolidation reduces lead times and lowers manufacturing overhead.
Furthermore, China’s industrial ecosystem provides SIMO with immediate access to premium raw materials. Our products feature high-purity electrical copper and optimized cold-rolled silicon steel. We back this with a massive investment in testing gear, including a state-of-the-art high-voltage testing center. Here, every motor undergoes full-load thermal verification, noise analysis, vibration testing (per ISO 10816), and insulation resistance testing before shipping.
Combining this structured cost base with skilled engineers enables SIMO to deliver customized motors (such as special voltages, double shaft extensions, or unique mounting dimensions) at a fraction of the cost of Western competitors, all while maintaining strict compliance with international CE, UL, and GOST certificates.
Providing high-torque, robust motor engineering to withstand extreme operational conditions across primary industrial sectors.
| Industry Sector | Motor Series Recommendation | Environmental Factors Addressed | Key Engineering Customization |
|---|---|---|---|
| Heavy Mining & Milling | TDMK, YRKK Series | Abrasive ambient dust, high start-up torque load, continuous duty. | Insulated bearings, custom shaft dimensions, thermal sensors (PT100) on stator/bearings. |
| Chemical & Petrochemical | YBX5, YFB4 Series | Volatile flammable gases, explosive chemical dust (Zone 1, Zone 2). | Flameproof enclosures (Ex d IIC), non-sparking terminal boxes, IP65 protection. |
| Water Utilities & Pumping | YXKS, YKS Water-Cooled | High humidity, continuous pumping, high load variability. | IC81W water-to-air cooling systems, marine-grade protective paint, rust-resistant shafts. |
| Steel Mills & Metallurgy | Z Series, Z4 DC Motors | Extreme temperature spikes, rapid start/stop/reversal cycles. | Heavy-duty carbon brushes, class H VPI insulation, robust frame structures. |
| Power Plant Fans & Compressors | YVFE3, YJP Variable Freq | Extended low-speed runs, high grid integration demand. | VFD-ready winding insulation, external cooling fans (IC416), encoders for speed feedback. |
SIMO motors comply with strict international regulatory bodies, meeting quality, safety, and operational standards across North America, Europe, and the Middle East.
Our quality assurance framework is built upon the ISO9001 Quality Management System, combined with environmental protection and occupational health guidelines. SIMO electric motors carry certifications from global regulatory boards, including European Union "CE", United States "UL", and Russian "GOST". This ensures compliance with regional safety codes, thermal limits, and terminal connection protocols.
SIMO's design engineers use advanced electromagnetic design software to simulate motor performance, temperature distribution, and mechanical rotor stress. This design process is paired with VPI (Vacuum Pressure Impregnation) winding treatment using Class F or Class H insulation resins. VPI eliminates air pockets in the stator coils, improving moisture resistance, heat dissipation, and mechanical durability, preventing dielectric breakdown under peak voltages.
Crucial engineering considerations to evaluate prior to finalizing heavy-duty motor procurements.
Understand the precise duty cycle requirements per IEC 60034-1. While continuous running pumps require an S1 duty profile, metal rolling mills and crane hoists require S3 (intermittent periodic duty) or S6 (continuous periodic duty with intermittent load) profiles to prevent stator overheating.
If utilizing a Variable Frequency Drive (VFD), verify the motor is equipped with insulated non-drive end (NDE) bearings to block destructive shaft currents, alongside high dV/dt winding insulation. The cooling method should also be upgraded from self-ventilation (IC411) to forced cooling (IC416) for low-speed operations.
For dusty mining or outdoor petrochemical zones, standard IP55 protection is insufficient. Specifying IP56 or IP65 prevents ingress of microscopic particles and high-pressure water jets, protecting the rotor core and winding integrity.
In-depth insights from SIMO's engineering department regarding design limits, efficiencies, and custom configurations.
Browse our selection of specialized motors designed for heavy industrial operations, including high-voltage soft starters and dust-proof configurations.
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