Explore our core selection of industrial high-efficiency asynchronous motors, flameproof units, and heavy-duty DC machines, manufactured to the highest international specifications.
In the global pursuit of energy conservation and high-load production optimization, synchronous electric motors have emerged as the bedrock of large-scale mechanical transmission systems. Unlike asynchronous induction motors, synchronous motors run at a constant speed precisely locked to the line frequency, regardless of the load variations. This makes them exceptionally suited for heavy-duty, low-speed, high-torque applications such as main shaft ventilation fans, reciprocating compressors, ore mills, and large-scale municipal water pumps.
The primary advantage of synchronous machinery lies in its power factor correction capability. By adjusting the field excitation current, these motors can operate at a leading power factor, compensating for the lagging power factor of the factory’s grid networks. This direct injection of reactive power reduces overall system energy losses, minimizes peak demand tariffs, and stabilizes terminal voltage levels. In regions with strict electrical grid compliance codes, investing in heavy-duty synchronous motors is not just an equipment upgrade—it is a critical macro-level strategy for corporate grid management and operational cost control.
A leading pioneer in the Chinese mechanical industry, SIMO is a comprehensive manufacturing and service supplier of motor design, mechanical processing, and advanced testing.
Founded originally in 1955, Xi’an Lite SIMO Motor Co., Ltd. holds over 60 years of specialized manufacturing experience. With a registered capital of 21.5 million RMB and three primary production facilities, our enterprise covers massive scale manufacturing of large, medium, and small-sized high-voltage, low-voltage, AC, DC, synchronous, and explosion-proof motors.
Our infrastructure holds 380 million RMB in fixed assets and runs more than 1172 sets of high-precision equipment. SIMO’s talent roster exceeds 1200 employees, containing over 260 technical engineers, including 21 senior engineers and 15 state-level expert engineers, ensuring our mechanical and electrical engineering matches strict global criteria.
SIMO Motor established and led by the Chinese government, setting the foundation for high-power machine production.
Moved operation to a dedicated plant in Xi'an city to expand manufacturing capacity.
Officially renamed to Xi'an Motor Factory following series of strategic industrial acquisitions and integrations.
Reformed from a state-owned factory to a modern limited liability company, introducing agile production management.
SIMO Motor Group established, organizing 14 functional subsidiaries under one unified industrial umbrella.
Operations moved to a newly constructed high-tech, automated, and environmentally sustainable plant.
Renamed to Tech Full Simo Motor, reinforcing the brand's focus on high-efficiency innovation.
Positioned as a top-tier premium motor manufacturer globally, advancing IE4 and IE5 green energy initiatives.
Covering 34 major series, 1,800 varieties, and over 19,500 specifications with a power capacity stretching from 0.35kW to 25,000 kW.
Our research and development program handles a comprehensive spectrum of operational demands. The main industrial families consist of:
| Motor Series | Power Range (kW) | Voltage Options | Typical Applications |
|---|---|---|---|
| T, TD, TK, TDMK (Synchronous) | 200 - 25,000 kW | 3kV, 6kV, 10kV | Mining Ore Ball Mills, Reciprocating Compressors, Large Blowers |
| YX, YXKK, YXKS (HV Induction) | 185 - 10,000 kW | 6kV, 10kV | Water Pumps, Centrifugal Fans, Coal Pulverizers, Conveyors |
| YBX3, YBX4, YBX5 (Explosion-Proof) | 0.55 - 3,000 kW | 380V, 660V, 6kV, 10kV | Chemical Processing Plants, Oil Fields, Coal Mine Shafts |
| Z4, Z Series (DC Motors) | 1.5 - 2,500 kW | 160V, 440V, 660V | Metal Rolling Mills, Plastic Extruders, Cable Machinery |
Engineered to deliver high reliability and energy efficiency in demanding heavy-duty operating environments.
Underground mining ore processing requires continuous high-torque output. Our wound rotor motors (YR/YRKK) and large TDMK synchronous motors provide high starting torque under full load and maintain stable power grids during operation.
Explosion protection is vital in chemical environments. Our YBX3, YBX4, and YBX5 explosion-proof high/low voltage motor lines prevent internal ignition from reaching explosive ambient gases, maintaining continuous safety in Zone 1 and Zone 2 conditions.
Large pumps handling municipal water or agricultural irrigation require continuous, year-round operation. SIMO’s YXKS and T-series synchronous motors utilize water-cooling systems (IC81W) to ensure optimal temperatures even in enclosed stations.
SIMO electric motors are certified to global quality, environmental, and regional safety frameworks.
Our manufacturing and engineering design models comply with ISO 9001 quality management systems. SIMO products carry international certifications to support frictionless integration into various global markets, including:
These certificates verify that every electric motor undergoes strict testing, run-in trials, and component analysis at our laboratory before dispatch, ensuring long-term operational life in field environments.
The global electric motor industry is undergoing a transition driven by efficiency regulations, digitalization, and material science.
To support global carbon reduction goals, SIMO is driving motor development across three key technological vectors:
Essential questions and engineering answers for B2B buyers selecting large synchronous and asynchronous electric motors.
Synchronous motors run at a constant speed locked to the line frequency, regardless of load. They are suited for low-speed, high-torque applications and offer power factor correction by adjusting excitation. Induction motors exhibit slip under load, are simpler in design, lower in initial cost, and are generally preferred for general-duty operations where speed variations are acceptable.
Our explosion-proof motors are designed with a heavy, pressure-resistant casing that contains any internal spark or gas ignition. The joint paths (flamepaths) are machined to tight tolerances, cooling internal gases before they escape into the surrounding environment, ensuring safe operation in hazardous Zone 1 and Zone 2 environments.
We provide multiple configurations based on local conditions: IC01 (open self-ventilated), IC411 (totally enclosed fan cooled - TEFC), IC611 (air-to-air heat exchanger), and IC81W (air-to-water heat exchanger). Water-cooled configurations (IC81W) are ideal when low ambient noise and maximum heat dissipation in tight spaces are needed.
Yes. Our YVFE3, YVFE4, and YVFE5 series are specifically engineered for variable frequency and speed regulation. They feature insulated non-drive end bearings to prevent circulating shaft currents and are equipped with independent cooling fans to maintain proper airflow at low operational speeds.
Explore our high-voltage slip-ring series, variable frequency explosion-proof units, and soft-start control cabinets designed for demanding industrial systems.
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