Engineered for high risk, hazardous atmospheres, and heavy-duty industrial applications requiring maximum torque and thermal endurance.
In today's global industrial arena, electric motors consume over 53% of global electricity. As global frameworks enforce transition targets toward Net-Zero carbon emissions, factories are forced to phase out obsolete, inefficient legacy machinery. However, complete plant redesigns are capital-intensive and result in extensive downtime. This is where high-quality replacement motors become essential.
Whether retrofitting a 1980s water municipal pump, upgrading mine milling equipment, or adapting explosion-proof fan motors in petrochemical plants, industrial managers need drop-in solutions that match exact shaft heights, frame sizes, and electrical characteristics while drastically improving operating efficiency to IE3, IE4, or IE5 classes.
Over six decades of excellence in the development, design, and manufacturing of heavy-duty industrial electric motors.
Xi’an Lite SIMO Motor Co., Ltd. is a core manufacturing enterprise specializing in large, medium-sized, high/low voltage AC motors, DC motors, synchronous motors, and explosion-proof motors within the Chinese mechanical industry.
SIMO is a comprehensive supplier providing integrated services including motor design, machining, mold production, coil winding, automated assembling, and performance testing. We stand at the forefront of China's motor manufacturing sector, consistently maintaining a rapid development trend driven by technology innovations and strict quality control.
With a registered capital of 21.5 million RMB and a historical track record dating back to 1955, SIMO owns 3 specialized manufacturing factories and 1 subsidiary facility. Our fixed assets have reached 380 million RMB, featuring over 1,172 sets of high-precision advanced machining and test equipment.
Custom design capabilities covering 34 major series, over 1,800 varieties, and 19,500 individual specifications.
Featuring our signature YX, YXKK, and YXKS series high-voltage, high-efficiency three-phase asynchronous motors. Designed with low vibration, reduced noise, and robust cast iron/steel frames, these models provide reliable service in harsh thermal power, mining, and water delivery sectors. Power ranges up to 25,000 kW.
The YR, YRKK, and YRKS series are engineered specifically for applications with weak power grids or high inertia loads where low starting currents and high starting torque are critical, such as industrial ball mills, heavy winches, and massive fans.
Engineered to exceed current MEPS, our YE3, YE4 (IE4), and YE5 (IE5) series induction motors deliver energy-saving operation. Ideal for pumps, compressors, and general factory automation systems seeking minimal operating costs and compliance with environmental regulations.
The YVFE3, YVFE4, and YVFE5 low/high-voltage series AC motors provide wide speed adjustment ranges under VFD control. They feature independent cooling fans to maintain thermal equilibrium even when operating at low speeds with high torque loads.
Our flameproof and dust-ignition-proof motors, including YBX3, YBX4, YBX5, YFB3, and YFB4, are certified for safe operation in underground coal mines, oil refineries, and grain elevators where flammable gases, vapors, or combustible dusts present safety hazards.
Providing the industry-standard T, TD, TK, TDMK series synchronous motors for mine milling and large compressors, alongside Z2, Z4, and Z series DC motors. These models provide precise speed control and match the retrofitting requirements of legacy industrial processes.
Operating from China's industrial heartland in Shaanxi, SIMO Motor leverages an integrated domestic ecosystem for raw material sourcing. From cold-rolled silicon steel laminations to ultra-pure copper windings and cast iron frames, every step of the supply chain is optimized for high-quality production.
Our internal capacity spans mold design, tool machining, precise dynamic balancing, and advanced vacuum pressure impregnation (VPI) insulation treatments. By keeping these operations in-house, we eliminate external delays and maintain complete quality control over stator core assembly and rotor dynamics.
This vertical integration allows SIMO to offer cost-efficient, high-quality industrial motors. Customers benefit from reduced lead times, custom engineering adaptations, and robust packaging designed to withstand transoceanic shipping.
Providing direct drop-in motor replacements tailored to the environmental demands of global industries.
| Industry Sector | Critical Application Challenges | SIMO Custom Replacement Motors | Key Technical Parameters & Standards |
|---|---|---|---|
| Heavy-Duty Mining | High vibration, dust loading, abrasive particles, massive startup loads on conveyor belts and ball mills. | TDMK large synchronous, YRKK slip-ring, YBK3 underground mine flameproof motors. | High startup torque, IP55/IP65 dust protection, optimized thermal capacity, and customized base frames. |
| Petrochemical & Refining | Explosive vapors, volatile environments, chemical corrosion, continuous 24/7 pumping schedules. | YBX3, YBX4 (IE4), YBX5 flameproof, YFB3 & YFB4 dust-explosion proof motors. | Ex d IIC T4 Gb protection rating, Class F/H insulation, salt spray corrosion-resistant paint systems. |
| Water Municipalities | High continuous torque demand, high-humidity atmospheres, variable load profiles, and space-constrained pumps. | YXKS water-cooled, YE4/YE5 ultra-high efficiency LV asynchronous motors. | Water-to-air cooling (IC81W), high energy efficiency index, VFD frequency-regulation compatibility. |
| Power Plants & Steel Mills | Extremely high ambient temperatures, critical boiler feed pumps, high-inertia draft fans. | YKS air-water cooled HV, YKK double-pipe cooled induction motors. | 6kV/10kV operations, optimized cooling configurations (IC611/IC616), high thermal tolerance. |
Pioneering high-efficiency electrical engineering technologies to meet the demands of future industrial standards.
We are expanding research and production in Permanent Magnet Synchronous Motors (PMSM) for industrial applications. By replacing traditional rotor copper windings with high-coercivity rare earth magnets, rotor excitation losses are eliminated, enabling IE5+ operating efficiencies even at partial loads.
The integration of smart sensor packages on SIMO replacement motors allows operators to monitor real-time metrics. Accelerometer vibration readings, winding temperature curves, and acoustic signatures are collected to enable predictive maintenance and prevent unexpected line stoppages.
To prevent shaft current pitting and premature insulation breakdown caused by modern VFD high-frequency voltage spikes, we use custom insulated bearings, grounding brushes, and double-insulated magnet wires coated with high-thermal-stability varnishes.
SIMO electric motors are certified for reliable operation across all major international markets and utility jurisdictions.
Quality is built into every design phase at SIMO. We maintain an ISO9001 Quality System Certification, ensuring full traceability from raw materials to final dyno testing.
Our motor lines comply with international industrial codes. Our products carry European Union "CE" marks, United States "UL" listings, Russian "GOST" conformity standards, and flameproof ATEX/IECEx certifications. This ensures seamless integration, local safety approval, and reliable performance worldwide.
Common questions regarding replacement engineering, dimensional compatibility, efficiency standards, and installation.
Heavy-duty solutions engineered to match specific voltage levels, frame structures, and industrial environments.
Lite Simo
