Explore our premium grade low-voltage and high-voltage three-phase industrial motors designed to provide high torque, energy efficiency, and operational safety in extreme conditions.
High efficiency dust-ignition-proof three-phase asynchronous motor suited for combustible dust atmospheres.
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Water-to-air cooled high-voltage AC electric motor designed for high efficiency and minimal acoustic footprint.
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Premium energy saving flameproof three-phase induction motor engineered for chemical processing zones.
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State-of-the-art IE5 grade efficiency three-phase AC motor reducing operations costs and carbon footprint.
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Optimized DC machine offering fine speed regulation and high starting torque for heavy industrial lines.
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Highly reliable explosion-proof three-phase motor designed for zone 1 & zone 2 hazardous operations.
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Specially engineered flameproof motor with heavy-duty construction for underground mining applications.
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Large-scale industrial synchronous machine suited for heavy mills, reciprocating compressors, and blowers.
View Technical Specifications →Xi’an Lite SIMO Motor Co., Ltd is one of China's primary machinery enterprises, specializing in the engineering and production of heavy-duty, large/medium-sized, high and low-voltage AC/DC electric motors, synchronous generators, and explosion-proof electrical apparatuses. Standing as a comprehensive manufacturer, LITESIMO spans the complete engineering lifecycle—ranging from conceptual motor design and CAD-modeled optimization to metallurgical molding, precision mechanical milling, automated assembly, and exhaustive load-testing.
With an production scale that ranks consistently at the top of the Chinese mechanical industry, LITESIMO maintains an aggressive trajectory of innovation and asset development. The manufacturing plant utilizes advanced automated coil winding machines, massive vacuum pressure impregnation (VPI) facilities, and micro-balancing test rigs to guarantee mechanical runout tolerances well within global industrial thresholds.
Through rigorous implementation of internationally recognized testing routines, our motor lines power critical installations in power generation, coal mining, petrochemical synthesis, steel metallurgy, oil and gas piping, water resource treatment, and aerospace infrastructure globally.
A look through our history highlights the structural transformation of SIMO Motor from a state-owned regional factory to an international powerhouse in heavy rotating machinery.
SIMO Motor established and led by the Chinese government to build heavy national industrial foundations.
Relocation to the key industrial base of Xi'an city, setting up heavy mechanical infrastructure.
Officially renamed to Xi'an Motor Factory following strategic mergers and acquisitions to expand technical integration.
Transformed into a limited liability corporation, accelerating modern corporate governance and foreign trade integration.
Establishment of SIMO Motor Group, encompassing 14 distinct manufacturing subsidiaries and supporting units.
Relocation to a massive high-tech advanced manufacturing facility, expanding floor space and high-end machinery.
Transitioned name to Tech Full Simo Motor, aligning corporate branding with high-end global exports.
Leading the motor supply sector with dynamic engineering exports to Europe, America, Central Asia, and the Middle East.
Analyzing the structural components, engineering clusters, and logistical dynamics that provide Chinese heavy motor manufacturers with an unmatched global advantage.
China hosts the world's most integrated supply chain for rotating machines. From localized extraction of raw materials (such as cold-rolled electrical silicon steel, high-grade casting iron housings, and high-purity electrolytic copper wire) to specialized bearing and tooling factories, the ecosystem minimizes logistical friction and intermediate markups.
The concentration of engineering academies, specialized testing centers, and academic institutions in cities like Xi’an ensures a constant influx of technical talent. Manufacturers can rapidly design, simulate, prototype, and implement modifications to meet specialized buyer criteria—such as high-torque profiles for ball mills or low-starting currents.
By producing thousands of large-scale machines annually, Chinese manufacturers achieve massive economies of scale. High-capacity capital equipment (such as automated VPI tanks and CNC stator winding lines) operates with high utilization, lowering the unit cost of high-voltage and custom industrial motors without compromising structural integrity.
Inside our heavy-duty motor manufacturing facilities: 3 dedicated production plants, over 1,172 sets of high-grade machinery, and advanced testing setups.
LITESIMO's manufacturing spectrum covers all key heavy rotating machinery classes. Our design team creates highly efficient structures that operate on variable frequency drives (VFD) or across standard line-start grid setups (3.3kV, 6kV, 10kV, 11kV).
Whether engineering wound-rotor slip-ring machines for slow, heavy start-up loads, synchronous machines with power factor correction capabilities, or massive cast-iron explosion-proof motors for oil refineries, LITESIMO uses advanced materials (Class F and Class H insulation, high-grade silicon steel laminations) to withstand thermal cycling and electromagnetic stresses.
Industrial motors operating in harsh settings require absolute safety validation. Our products are fully certified by key global regulatory authorities for efficiency, structural soundness, and explosion-safety.
At LITESIMO, quality assurance isn't a post-production checkbox; it is built into the engineering phase. Our processes are governed by a certified ISO9001 Quality Management System, monitoring raw material sourcing, stator winding tension, shell casting integrity, and final dynamic load metrics.
For global markets, our motors conform to EU "CE", US "UL", and Russian "GOST" frameworks. In high-risk hazardous zones, SIMO flameproof and explosion-proof motors (YBX3, YBX4, YBK3, YFB3 series) carry CNEx certifications, with designs aligning with IECEx and ATEX standards. This ensures compatibility with global procurement criteria in the European Union, the Americas, Central Asia, and the Middle East.
Heavy-duty motors drive primary industries. From chemical installations to deep coal mining shafts, LITESIMO motors are designed to operate under diverse, challenging loads.
Underground mining places severe mechanical loads and chemical stresses on motors. Our YBK3 series flameproof motors are specifically designed for coal face conveyors and ventilation systems, operating safely in environments with methane gas and coal dust.
Explosion-proof safety is critical in hydrocarbon processing. YBX3, YBX4, and YFB3 motors drive petrochemical pumps, compressors, and pipeline transport systems, offering certified gas-group safety (IIA, IIB, IIC) and dust-ignition protection.
High-capacity water pumping requires continuous duty motors. Our YKS water-to-air cooled series and YKK air-to-air cooled series offer reliable performance for regional drainage systems, municipal water supplies, and industrial cooling loops.
As industries target lower carbon footprints and higher system intelligence, heavy motor design is undergoing significant structural changes.
Energy costs represent over 95% of a motor's lifecycle expense. Transitioning to YE4 (IE4) and YE5 (IE5) efficiency levels significantly reduces carbon emissions and operational costs. Utilizing advanced rotor slot geometry, low-loss electrical steel sheets, and optimized stator winding schemes, these motors minimize rotor resistive losses and stray load losses.
Modern heavy industries cannot afford unplanned downtime. Integrating vibration sensors, stator winding RTD temperature probes, and bearing temperature detectors directly into the motor enclosure allows plant operators to monitor motor health in real-time. Early detection of rotor imbalance or bearing wear helps prevent catastrophic insulation failures.
Industrial fans, pumps, and compressors rarely run at constant speeds. Speed-regulating AC motors like the YJP variable-frequency series are designed to handle harmonic heating and voltage spikes caused by PWM inverters. Incorporating insulated non-drive end bearings prevents electrical bearing pitting, ensuring long-term system reliability.
High power densities require efficient thermal management. Modern designs use dual-cooling circuits, including air-to-air cooling (IC611) and air-to-water cooling (IC81W) systems. Air-to-water systems isolate the motor's internal air loop from the environment, protecting windings from dust and humidity while maintaining low operating temperatures.
In chemical processing and mining, combustible dusts (such as coal or grain dust) and gases present significant risks. Current engineering standards emphasize flameproof enclosures designed to contain internal explosions without propagating them, combined with dust-ignition-proof seals to prevent particles from entering the enclosure.
Heavy duty motors must fit into existing industrial setups. Standardized frames (NEMA, IEC) are complemented by custom shaft designs, non-standard mounting feet, and flexible terminal box configurations (left, right, or top entry) to simplify retrofitting on-site.
Discover our specialized high-voltage AC induction series and large DC machines configured for custom mechanical interfaces and heavy starting conditions.
Standard high voltage three-phase asynchronous motor featuring robust structural frames and low vibration.
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High voltage induction motor with air-to-air cooling (IC611) for severe environments.
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Heavy-duty large-scale DC machine built for rolling mills, heavy extruders, and mining winches.
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Space-saving, compact high voltage asynchronous motor with a high power-to-weight ratio.
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Reliable medium-scale DC motor featuring high transient load handling capabilities.
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Wound-rotor (slip ring) high voltage motor providing high starting torque at low starting currents.
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AC high efficiency motor designed for wide speed regulation range via VFD units.
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Super premium efficiency standard industrial AC motor minimizing operations energy draw.
View Technical Specifications →Get authoritative, technical answers to common questions about industrial motor selection, factory capabilities, and international standards.
These series differ in their cooling mechanisms and rotor construction. The YKK series uses an air-to-air heat exchanger (cooling method IC611), with steel cooling tubes surrounding the stator frame. The YKS series utilizes a water-to-air cooler (IC81W) for higher cooling efficiency in space-restricted environments with lower noise. The YRKK series features a wound rotor (slip ring design) instead of a squirrel cage, allowing for high starting torque at low starting currents, which is ideal for starting heavy loads like ball mills or crushers.
LITESIMO's flameproof and dust-ignition-proof motors undergo rigorous engineering checks. The enclosures are cast from high-tensile materials and pressure-tested to contain internal explosions without allowing flames to escape. Flame paths (rabbet joints and shaft clearances) are machined to precise tolerances. For dust-ignition environments, the motors feature IP65 sealing to keep combustible dust out of the electrical enclosure, preventing internal ignition.
Yes. Our R&D engineering team designs custom replacement motors. We customize shaft extensions, mounting foot dimensions, and overall frame heights to align with NEMA, DIN, or legacy manufacturers' footprints. Electrically, we configure windings for non-standard voltages (e.g., 4.16kV, 6.6kV) and match original speed-torque curves to keep existing drives and control systems compatible.
Each motor undergoes full routine testing at our facility. This includes stator winding resistance measurement, insulation resistance testing (megger and polarization index), no-load current/loss checks, and high-potential dielectric testing. For large machines, we offer type tests, including temperature rise tests, vibration analysis, noise measurement, and dynamic load testing.
Our high-voltage motors are built with Class F insulation (rated for 155°C) and assessed under Class B temperature limits (80K rise) to provide a safety margin and extend the motor's operating life. We can also provide Class H insulation (180°C) for extreme environments. All windings undergo vacuum pressure impregnation (VPI) with solventless epoxy resin, ensuring a void-free, moisture-resistant insulation system.
Lead times vary based on frame sizes and customizations. Standard high-voltage motors (under 2000kW) usually ship within 8 to 12 weeks from technical design sign-off. Large synchronous motors (T series) or highly customized high-voltage motors requiring specialized castings, thermal models, or custom cooling enclosures typically take 14 to 20 weeks.
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