A Premier Pillar in Chinese Heavy Mechanical Industry Since 1955
Founded originally in 1955, Xi’an Lite SIMO Motor Co., Ltd stands as a colossal comprehensive manufacturing and service supplier in the global power electric machinery landscape. Our core expertise spans high-end motor design, precise manufacturing, specialized mechanical processing, mold building, and final system integration. Over the course of more than 60 years of technical iteration, SIMO has ranked at the forefront of China's motor industry in scale, engineering excellence, and technological capacity.
With a robust registered capital of 21.5 million RMB, 3 state-of-the-art manufacturing factories, and 1 subsidiary plant, SIMO possesses fixed assets valued at over 380 million RMB. We house more than 1,172 sets of specialized production machinery, allowing us to maintain a stable output of high-reliability electric drive solutions for clients worldwide.
Procuring heavy-duty electric motors for twin-screw refrigerant compressors demands deep engineering alignment. Industrial buyers must balance capital expenditures with total cost of ownership (TCO).
Screw refrigerant compressors operate under elevated differential pressures. The integrated electric motor must endure continuous contact with synthetic refrigerant oils and corrosive gaseous halocarbons without dielectric breakdown or structural leakages. Our customized motor series provides enhanced containment seals to ensure non-permeable operation.
Modern refrigeration networks rely heavily on variable-speed operations. SIMO’s YVFE3, YVFE4, and YVFE5 series variable-frequency motors are configured with insulated bearings to bypass high-frequency shaft currents, mitigating premature bearing erosion and enabling step-free speed optimization from 10% to 120% of rated capacity.
Compressor startups present critical thermal stress scenarios. SIMO employs Class H insulation systems, vacuum-pressure impregnation (VPI) with premium epoxy resins, and PT100 temperature sensors embedded directly into stator wind slots. This setup mitigates critical winding failure risks under rapid cycle switching.
With an extensive R&D program, SIMO manufactures 34 major series, over 1,800 varieties, and more than 19,500 physical specifications, scaling from 0.35 kW up to 25,000 kW in operational output. Our structural configurations encompass low-voltage high-efficiency units to massive high-voltage asynchronous and synchronous generator blocks.
| Motor Series | Voltage Range | Efficiency Class | Cooling & Enclosure Design | Ideal Application Scenario |
|---|---|---|---|---|
| YX / YXKK / YXKS | 3kV, 6kV, 10kV | High Efficiency (GB/T 30253) | IP54 / IP55, IC01/IC611/IC81W | Large-scale heavy chemical chillers, district cooling plants |
| YE3 / YE4 / YE5 | 380V, 660V, 1140V | IE3 / IE4 / IE5 Premium | TEFC (IP55) fully enclosed | Commercial HVAC systems, liquid cooling scroll/screw sets |
| YVFE3 / YVFE4 / YVFE5 | Low & High Voltage | IE3 to IE5 Equivalent | IP55, IC416 Force-Ventilated | Frequency modulated process refrigeration compressors |
| YBX3 / YBX4 / YBX5 | Low & High Voltage | Flameproof High Efficiency | Ex d I Mb, Ex d II BT4 Gb | Refinery gas processing, coalbed methane extraction |
| T / TD / TK / TDMK | High Voltage | Synchronous Motor Efficiency | Engineered custom enclosures | Continuous-duty mining compressors & large air separation |
Tracing over six decades of development, manufacturing expansion, and technical engineering milestones in electric machinery.
SIMO Motor established and led by the Chinese government to fulfill state industrial modernization programs.
Relocated to a newly constructed manufacturing plant in Xi'an city, establishing regional manufacturing hubs.
Officially renamed to Xi'an Motor Factory following strategic mergers, acquisitions, and structural integrations.
Reformed from a state-owned industrial enterprise into a modern joint-stock limited liability company.
SIMO Motor Group established, consolidating 14 specialized subsidiaries across electrical component manufacturing sectors.
Transitioned manufacturing resources into a newly built high-tech advanced industrial plant in Xi'an.
Rebranded corporate identity as Tech Full Simo Motor to align with international high-efficiency motor exports.
Advancing global supply chains, optimizing IE5 permanent magnet synchronous designs, and servicing global OEMs.
Screw compressors are the workhorses of process cooling, gas separation, and large cold storage systems. Because screw mechanisms generate high radial and axial forces, they require motor drives with high structural stability and rigid shaft shafts.
Refineries and Chemical Plants: For hydrocarbon condensation and gas fractionation, explosion-proof motors (such as the YBX4 and YBX5 series) prevent spark ignition in hazardous areas, ensuring safe plant operation.
District Energy & Municipal Cold Chain: High-efficiency permanent magnet or multi-pole asynchronous motors operate continuously, significantly lowering municipal energy bills. SIMO’s optimized cooling jackets (liquid or forced-air) prevent heat buildup in the compressor housing, maintaining high efficiency.
Simo Motor maintains a strict quality control workflow, earning standard certifications across international industrial regions. Our production system is fully certified to ISO9001 Quality System Certification, European Union “CE”, United States “UL”, and Russian “GOST” standards.
Our motors are used in key industries like electric power, coal mining, petrochemicals, metallurgy, railways, logistics, agriculture, water management, aviation, and advanced test systems worldwide.
How Simo Motor designs next-generation heavy-duty industrial electric drives for eco-friendly refrigerants and smart automation systems.
By using low-loss silicon steel sheets and optimizing rotor slot designs, we are transitioning our entire low-voltage range toward the IE5 efficiency standard. This reduces energy consumption in commercial chillers by up to 8% compared to standard IE3 induction motors.
We are integrating vibration-sensing accelerometers, magnetic flux leakage sensors, and winding temperature detectors into our motor housings. This provides real-time health data, helping operators schedule predictive maintenance and prevent unexpected plant downtime.
As the industry transitions to environmentally friendly refrigerants (like ammonia, CO2, and HFOs), Simo's engineering team adapts winding insulation varnishes and stator encapsulation materials to resist degradation from these chemical compounds.
Operating critical infrastructure projects in Europe, North America, Central Asia, and the Middle East requires compliance with local standards and access to responsive maintenance services.
Design Standards: We build motors to IEC, NEMA, and GB specifications. This includes standardizing frame sizes, shaft configurations, and terminal box placements to ensure easy drop-in replacement on existing compressor packages.
Custom Engineering: Our engineering team can customize shaft extensions, mount special bearing options (like SKF or FAG), and adjust flange dimensions to match various compressor housing designs.
Global Support: Through our international distributor network and authorized service centers, SIMO provides replacement parts, repair services, and technical support to keep your systems running smoothly.
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