Explore our foundational industrial product lines, manufactured under strict ISO9001, CE, UL, and GOST protocols for international compliance.
Driving operational efficiency, energy transitions, and precise torque performance across global industrial ecosystems.
In modern industrial automation and heavy machinery, electric motors consume over 65% of the total industrial electrical energy. Low Voltage (LV) AC Induction Motors (typically operating below 1000V AC) serve as the vital muscle behind pumps, compressors, conveyors, fans, and extruders globally. However, off-the-shelf catalog motors often fail to satisfy the complex, variable constraints of highly specialized process environments. Severe thermal stress, unique mounting spaces, abrasive airborne particulate, volatile gas mixtures, and high transient start torque require highly specialized custom designs.
As a leading authority in custom low-voltage electrical machinery, Xi’an Lite SIMO Motor Co., Ltd manufactures electrical systems tailored to unique load profiles and hostile environments. Our custom configurations improve electrical stator laminations, optimize copper slot-fill coefficients, utilize advanced variable frequency drive (VFD) isolation, and upgrade structural frame heat dissipation to achieve outstanding reliability and lower total cost of ownership (TCO).
We utilize low-loss cold-rolled silicon steel laminations and custom winding patterns to reduce eddy-current losses. This yields high conversion efficiency (IE3, IE4, and IE5 standards).
Utilizing Class F and Class H insulation materials, our motors feature advanced VPI (Vacuum Pressure Impregnation) treatments to withstand thermal surges and high dV/dt electrical spikes from VFDs.
Our motors are constructed with cast-iron or heavy-gauge steel enclosures (IP55, IP56, IP65, IP66 protection classes) to ensure long-term durability in highly humid, chemical, and marine operations.
Tracing our path from a state-owned industrial enterprise in 1955 to a global leader in custom rotating machinery.
Founded originally in 1955, Xi’an Lite SIMO Motor Co., Ltd has established itself over more than 60 years as an elite provider of rotating electrical machinery. With a registered capital of 21.5 million RMB and fixed assets valued at 380 million RMB, SIMO operates 3 dedicated manufacturing centers and 1 specialized subsidiary.
Our facilities house more than 1,172 sets of high-precision equipment for motor design, mold construction, CNC mechanical processing, precision component casting, vacuum pressure impregnation, and advanced dyno-testing. Our team consists of over 1,200 employees, including more than 260 technical engineers, 21 senior engineers, and 15 expert engineers. This concentration of technical talent enables us to customize motor designs to meet a wide variety of customer requirements.
Comprehensive engineering breakdown of our 34 major motor series, optimized for specific mechanical loads.
| Motor Category | Key Series | Power Output & Voltage Rating | Structural Details & Dynamic Applications |
|---|---|---|---|
| High-Efficiency Asynchronous | YE3, YE4, YE5 Series | 0.75kW - 375kW | 380V, 660V, 1140V | Meets IE3, IE4, & Ultra-Premium IE5 energy classifications. Cast iron housing, low heat rise, long-life bearings. |
| Variable Frequency Control | YVFE3, YVFE4, YVFE5 Series | 0.55kW - 1000kW | VFD Driven (Low/High V) | Equipped with forced-ventilation cooling fans, custom shaft grounding rings, and insulated bearings to eliminate EDM currents. |
| Explosion-Proof Asynchronous | YBX3, YBX4, YBX5 Series | 0.18kW - 375kW | Ex d I Mb, Ex d IIB T4 Gb | Designed for underground coal mining, petrochemical plants, and paint factories. Flame-proof gas pathways protect from ignition. |
| Wound Rotor High Voltage | YR, YRKK, YRKS Series | 220kW - 25,000kW | 6kV, 10kV, 11kV | Designed for starting heavy loads (e.g. ball mills, sugar shredders, fans). Heavy-duty slip rings deliver high starting torque. |
| High-Voltage Air-to-Air / Air-to-Water | YXKK, YXKS Series | 160kW - 20,000kW | 6,000V, 10,000V | High efficiency cooling options. YXKK (Air-to-Air heat exchanger); YXKS (Water-to-Air system) for clean, closed-loop thermal stability. |
| Synchronous Heavy Motors | T, TD, TK, TDMK Series | 200kW - 15,000kW | Power Factor correction | Used in high-power reciprocating compressors and mining mills. Operates at a constant speed to improve industrial plant power factor. |
| Heavy Duty DC Systems | Z2, Z4, Z Series | Up to 3,000kW | Custom Armature / Field V | Delivers precise speed control and wide torque ranges. Widely used in steel rolling mills, rubber extruders, and mine hoists. |
How SIMO's custom low-voltage electrical machinery drives complex processes across primary industrial sectors.
Volatile hydrocarbons require certified explosion-proof enclosures. SIMO’s YBX3, YBX4, and YBX5 explosion-proof motors prevent gas ignition. Our flameproof paths contain internal explosions, securing volatile process units.
Heavy duty mining conveyors, crushers, and grinders require high starting torque under full load. SIMO custom wound rotor motors (YR/YRKK/YRKS) with liquid resistance starters provide smooth acceleration, protecting gearboxes and belts.
Large boiler feed pumps, draft fans, and coal mill pulverizers require continuous operation. Our customized low voltage and high voltage induction motors are designed to operate under low-voltage transients to avoid plant trips.
Off-the-shelf catalog motors often struggle with non-standard space limits, unusual shaft dimensions, or extreme climate challenges. At SIMO, we customize mounting footprints, shaft lengths, materials (such as high-tensile alloy or stainless steel), and cooling options to match legacy machinery configurations.
For instance, water management facilities often require vertical shaft mountings (V1 configuration) with thrust bearings designed for heavy hydraulic loads. Similarly, agricultural pumps in hot regions require customized moisture protection and tropicalized insulation to prevent condensation during shutdown periods. We use detailed 3D CAD modeling and finite element analysis (FEA) to ensure that each custom motor operates within acceptable vibration limits, structural stresses, and cooling performance.
Securing operations in North American, European, Eurasian, and Asian markets through certified quality control.
To operate reliably in international markets, industrial motors must meet stringent local regulations. Xi’an Lite SIMO Motor operates a certified ISO9001 Quality Management System, verifying every phase of design, sourcing, manufacturing, and dynamic testing. Our electrical machinery complies with key global standards, helping simplify the plant integration process:
ISO9001 Certificate
CE Certificate
UL Certificate
GOST Certificate
QMS Certificate
Developing premium efficiency and smart diagnostic systems to meet future industrial demands.
Global environmental guidelines are rapidly phasing out lower-efficiency electrical motors. SIMO is at the forefront of this shift, actively designing IE5 ultra-premium efficiency platforms and researching IE6 topologies. By optimizing rotor cage geometries and utilizing premium grade electromagnetic steels, our current YE5 series motors achieve low heat generation and low energy losses. This helps plants reduce operating costs and lower their carbon footprint.
Modern processing plants rely on Variable Frequency Drives (VFDs) to control speed and flow rate, which can introduce high voltage spikes (high dV/dt). SIMO’s future-oriented designs use high-grade insulation materials and custom stator slot winding methods to resist dielectric stress. We also offer standard insulated non-drive end bearings and carbon grounding brush systems to protect bearings from electrical discharge damage (EDM).
Unplanned downtime can cost processing plants thousands of dollars per hour. SIMO’s smart motor options feature integrated vibration sensors, stator winding RTD temperature probes, and bearing temperature detectors. These sensors feed real-time performance data to PLC control networks or cloud monitoring platforms. This allows maintenance teams to identify potential faults before failure occurs, shifting operations from reactive troubleshooting to planned predictive maintenance.
Expert engineering answers to common technical, manufacturing, and installation questions.
Complete directory of custom rotating electric machinery, generators, and soft starters.
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