Explore our flagship high-performance electrical machines engineered for absolute uptime and continuous operation.
A premier global vanguard in heavy-duty electric motors and control solutions.
Founded in 1955, Xi’an Lite SIMO Motor Co., Ltd (SIMO) has carved out more than 60 years of undisputed manufacturing and design excellence. Strategically positioned within the Chinese mechanical industry, SIMO stands as one of the largest and most comprehensive manufacturers of high and low-voltage AC/DC motors, synchronous machines, and explosion-proof solutions. From customized R&D designs to mechanical tooling, mold creation, and final high-precision assembly, SIMO operates at the top tier of China’s motor sector. Our products support high-intensity industrial fields including power generation, coal mining, petrochemicals, metallurgy, water conservancy, and heavy logistics.
A timeline showcasing more than 6 decades of structural growth, engineering transformation, and technological breakthroughs.
Established as a foundational state-owned electrical machinery factory by governmental directive, initiating primary industrial motor supply lines.
Relocated to a newly constructed manufacturing facility in Xi'an City, expanding factory footprint and machinery counts.
Rebranded to Xi'an Motor Factory following strategic mergers and structural integrations, centralizing high-voltage engineering research.
Successfully transitioned from a state-owned plant to a modernized limited liability company, unlocking international trade capabilities.
SIMO Motor Group established, organizing 14 specialized subsidiaries and integrating structural component casting, winding, and assembly chains.
Moved to a modern high-tech manufacturing hub with state-of-the-art testing systems, vacuum pressure impregnation facilities, and CNC tooling centers.
Scaling new horizons in green manufacturing, engineering ultra-premium IE4 and IE5 efficiency classifications to combat global carbon footprints.
A technical whitepaper breakdown of how 2-pole configurations deliver maximum torque and rotational velocity.
Calculated through the formula Ns = (120 × f) / P, a 2-pole configuration operating at 50Hz runs at a synchronous speed of 3000 RPM, rising to 3600 RPM at 60Hz. Designed specifically for high-speed fluid and gas compression applications.
Continuous operation at speeds up to 3600 RPM demands precision mechanical balancing. Our 2-pole rotors undergo dynamic balancing to a minimum of ISO G2.5 standards, using high-tensile rotor cores to prevent deformation under heavy centrifugal forces.
Due to elevated friction and core loss factors under high-frequency operation, SIMO 2-pole motors implement advanced cooling topographies, including IC411 (Self-Ventilated) and IC611/IC81W (Air-Water Heat Exchangers) for high voltage models.
| Motor Series | Voltage Range | Power Output (kW) | Insulation Class | Typical Industrial Applications |
|---|---|---|---|---|
| YX / YXKK / YXKS High Voltage | 6kV - 10kV | 220kW - 25,000kW | Class F (Class B Rise) | Heavy-Duty Water Pumps, High-Volume Blowers, Power Stations |
| YE4 / YE5 Ultra-Premium | 380V - 660V | 0.75kW - 375kW | Class F / H | Compressors, Automated Fans, HVAC, Industrial Systems |
| YBX3 / YBX4 Explosion-Proof | 380V - 10kV | 0.55kW - 2,000kW | Class F (Ex d II B/C T4) | Petroleum Refineries, Underground Coal Mining, Gas Stations |
| YVFE3 / YVFE4 VFD Systems | 380V - 1140V | 0.55kW - 1,000kW | Class F | Dynamic Speed Pumps, Extruders, High-Friction Mixers |
Driving production agility, component traceabilty, and unmatched quality assurance.
Under the paradigm of Industry 4.0, SIMO has integrated smart manufacturing systems to streamline product development and shorten production lead times. Utilizing high-efficiency CNC tooling centers, automatic coil winding machines, and large-scale Vacuum Pressure Impregnation (VPI) lines, our factories ensure that stator insulation is free of voids, preventing partial discharges under transient voltage conditions.
By securing key supplier networks for high-grade silicon steel sheets, oxygen-free copper wire, and world-class bearing systems (such as SKF or FAG), SIMO provides unmatched global supply chain resilience. No matter the scale or custom modification requests—be it special shaft extensions, non-standard mounting dimensions, or marine-grade anti-corrosive finishes—our engineering divisions can quickly adapt designs within our dedicated testing and prototyping facility.
Addressing total cost of ownership (TCO) and international engineering standards.
Electric motors consume more than 95% of their lifetime costs in energy consumption. Upgrading to SIMO’s IE4/IE5 ultra-premium efficiency motors yields ROI within months by cutting operational electricity costs.
Our manufacturing lines are fully compliant with internationally recognized safety standards. SIMO holds certifications for ISO9001, EU CE, US UL, Russian GOST, and China's CCC system.
For applications in explosive environments, SIMO's flameproof series (YBX3, YBX4, YBBP) conform strictly to IECEx / ATEX criteria, utilizing robust cast-iron frames capable of enclosing internal explosions.
Providing high-torque, reliable performance across heavy industries worldwide.
2-Pole motors are widely used in pipeline pump systems and municipal water networks. The 3000/3600 RPM output delivers the fluid velocity needed to maintain constant pressure across long-distance distribution lines.
Air compressors require constant high speeds to maintain process air pressure. SIMO’s YVFE3 and YVFE4 variable frequency motors allow for smooth, continuous speed adjustment, matching flow rates to plant demand without sacrificing mechanical efficiency.
Using our custom-engineered YBX4 and YBBP explosion-proof motor series, oil and gas operations can safely run critical equipment in volatile environments, protected by advanced Ex-d flameproof enclosures.
Proof of quality, safety, and performance alignment with international standards.
Answering common technical questions about 2-pole motor design, maintenance, and customization.
2-Pole motors are engineered for high-speed operation. By running at 3000 RPM (50Hz) or 3600 RPM (60Hz), they provide the necessary velocity for equipment like centrifugal pumps, fans, and turbocompressors. They also offer a smaller physical footprint than 4-pole or 6-pole motors with comparable power ratings, making them ideal for space-constrained installations.
Yes. Our in-house engineering team can customize shaft diameters, frame dimensions, mounting holes, and enclosure ratings. We also offer modifications for specific thermal requirements (such as RTD temperature sensors) and space heaters to prevent internal condensation.
Class F insulation is rated for a maximum operating temperature of 155°C, while Class H is rated for up to 180°C. SIMO motors typically use Class F insulation systems designed to run within Class B temperature limits, providing a safety margin that extends the overall service life of the motor.
Our explosion-proof motors (such as the YBX3 and YBX4 series) feature rugged, flameproof enclosures. In the event of an internal spark or explosion, the heavy cast-iron casing prevents flames or hot gases from escaping and igniting volatile substances in the surrounding environment.
SIMO maintains international standard approvals across all lines, including ISO9001 Quality System Certification, European Union CE Mark, United States UL Listings, Russian GOST registration, and domestic CCC standards.
Premium specialized electric motors built to deliver maximum energy savings and operational reliability in rugged environments.
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