Explore our foundational range of heavy-duty AC/DC motors custom-built for high-demand industrial environments.
Founded in 1955, Xi’an Lite SIMO Motor Co., Ltd (popularly known as SIMO Motor) has established itself as an industry titan within the Chinese mechanical manufacturing sector. As a comprehensive and highly integrated manufacturer, SIMO specializes in the complete design, mechanical processing, tool/mold creation, precision assembly, and systemic testing of large/medium-sized high-voltage and low-voltage AC/DC electric motors, synchronous systems, and explosion-proof propulsion equipment.
By prioritizing scientific research and rigorous quality benchmarks, SIMO consistently ranks at the top of China's heavy industrial drive industry. Our expansive infrastructure empowers us to handle multi-megawatt industrial requirements while remaining highly adaptable to customized, project-specific mechanical requests.
With over 60 years of dedicated motor manufacturing and sales expertise, SIMO's lineage is rooted in strategic advancement and industrial transformation:
Years of Engineering History
Specialized Technical Personnel
Registered Capital (RMB)
Fixed Assets (RMB)
Unique Custom Specifications
Deep insight into the technological shifts shaping modern electric drive machinery globally.
Global regulatory bodies continue to squeeze carbon envelopes. Modern factories must leverage ultra-premium efficiency asynchronous motors (like the YE5 Series) to reduce power losses. Advancements in stator geometry, magnetic steel slot ratios, and high-purity copper windings ensure massive long-term operating cost drops.
Unplanned downtime inside petrochemical plants or deep-shaft mines is disastrous. Modern large asynchronous motors are now manufactured with integrated slots for thermal sensors (PT100) and triaxial vibration transmitters. Real-time diagnostic telemetry detects bearing wear and winding fatigue before failures occur.
Heavy industries are transitioning away from buying the cheapest available equipment to buying on a lifecycle cost basis. Since motor electricity consumption accounts for roughly 95% of its total lifetime cost, investing in a high-efficiency Chinese factory motor provides quick payback cycles.
SIMO houses 3 major production units and 1172 sets of specialized industrial manufacturing tools to supply global demands.
Our research and development pipeline supports the configuration of 34 major motor series, encompassing over 1,800 models and 19,500 individual specifications. With an expansive operating output window from 0.35 kW up to 25,000 kW, our catalog features:
Includes the YX, YXKK, and YXKS high-efficiency high-voltage three-phase asynchronous motors, along with the YE3, YE4, and YE5 series. These models optimize copper fill factor and air gap geometry to reduce harmonic losses during heavy operations.
Our YVFE3, YVFE4, and YVFE5 variable-frequency speed-regulating high/low voltage systems provide wide-speed-range constant torque output, critical for conveyors, drafts, and variable speed pump systems.
Explosion-proof safety motors including YBX3, YBX4, and YBX5 high/low-voltage three-phase asynchronous variants, designed to encapsulate gas-ignition hazards within chemical, petrochemical, and refining facilities.
From high-altitude operations to explosive environments, our drive systems are customized for maximum dependability.
Mill circuits, ball mills, crushers, and bulk conveyor lines require high starting torque and thermal durability. The TDMK and TD series synchronous motors are custom-configured to pull large mechanical loads from a standstill while running at a leading power factor to correct overall substation efficiency.
Flammable vapors and dynamic dust clouds pose explosion hazards. Our YBX3, YBX4, and YBX5 explosion-proof motors utilize robust cast iron frames, non-sparking external fans, and sealed terminal boxes to prevent spark propagation into the surrounding environment, ensuring compliance with international safety codes.
Large municipal water intake pumps and dry-dock drainage systems operate under high-voltage configurations. Using water-cooled solutions like the YKS and YRKS series prevents dynamic thermal buildup inside confined pump rooms, converting cooling fluid heat directly out of the primary machine environment.
Understanding the inner mechanics that separate premium asynchronous machinery from standard low-cost alternatives.
For B2B engineering procurers, performance stability is defined by structural decisions made at the drawing board. Our large asynchronous motors leverage specialized mechanical choices to extend bearing lifespan and prevent dielectric breakdown:
All motor stators undergo complete VPI processing using solvent-free class F/H insulating resins. The vacuum removes micro-air pockets within stator slots, followed by positive pressure baking to create a solid, moisture-resistant, and high-dielectric structural block.
High-voltage rotors are balanced on automated systems to precision grade ISO G2.5 or better. This minimizing of residual unbalance significantly limits shaft vibrations, extending the structural lifetime of cylindrical roller bearings or sleeve bearing arrangements.
We provide multiple cooling methods depending on factory layouts: IC411 (totally enclosed fan-cooled), IC611 (with air-to-air heat exchangers), or IC81W (air-to-water cooled), matching thermal dissipation to ambient plant conditions.
B2B procurement departments often face challenges balancing cost control against operating risks. Sourcing direct from the manufacturer addresses these pain points:
Our operations conform to rigorous safety standards, allowing SIMO motors to be deployed worldwide.
SIMO has passed ISO9001 Quality System Certification, EU "CE", US "UL", and Russian "GOST". Our electric motors are widely applied in power generation, coal mining, petroleum refining, metallurgy, railway operations, chemical processing, and municipal water conservancy globally.
Essential answers regarding order specifications, logistics, customization, and factory audits.
For mid-sized low voltage motors, the average lead time is 30 to 45 days. For multi-megawatt high-voltage, wound-rotor (YR/YRKK), or custom explosion-proof motors, production timelines range from 60 to 90 days. This includes raw coil winding, VPI insulation treatment, dynamic balancing, and certified load-testing.
Yes. Although we follow IEC standards as default, our technical design department regularly customizes mounting dimensions, shafts, and terminal box placements to match NEMA standards for direct replacement projects in North American facilities.
All SIMO explosion-proof models undergo flameproof enclosure testing, shell hydrostatic verification, and spark ignition prevention testing. We provide documentation corresponding to local country certificates (such as ATEX, IECEx, or regional equivalents like GOST and China CCC).
The YE5 series conforms to the international standard IEC 60034-30-1 ultra-premium IE5 efficiency curve. This design reduces operating losses by up to 20% compared to standard IE3 motors, lowering utility bills in continuous runtime situations.
Air-to-water cooling (IC81W) isolates thermal emissions from the surrounding air. In deep mining chambers, dumping motor heat into ventilation air raises room temperature to unsafe levels. Water cooling routes heat out via water pipes, keeping the surrounding space cool.
Review our specialized motors, synchronous generators, and explosion-proof mining drives designed for heavy industrial configurations.
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