China Motor Elektrik Suppliers & Factories

Empowering Global Heavy Industries with High-Efficiency Motors, Deep Customization, and Proven Engineering Integrity Since 1955

Litesimo Company Main Plant
Established Leader Since 1955

Xi'an Lite Simo Motor Co., Ltd.

Xi’an Lite SIMO Motor Co., Ltd is an electric company, main enterprise specializing in the manufacturing of large/medium-sized, high/low voltage AC motors, DC motors, synchronous motor, and explosion-proof motor in the Chinese mechanical industry. SIMO is a comprehensive manufacturing and service supplier of motor design, manufacturing, mechanical processing, mold making, assembling. The Company ranks TOP in China’s motor industry as to its scale of production, and has maintained fast-growing development trend for consecutive years.

By focusing on semantic search alignment and understanding exact industrial buyer intents, SIMO has engineered heavy machinery drive solutions that resolve structural and operational stress points. Our motors perform under demanding electrical gradients and environmental parameters, offering deep customization capabilities that enable precise matching with international system integrators.

Core Engineering Philosophy

We integrate thermal efficiency matching, finite element rotor structural design, and advanced vacuum pressure impregnation (VPI) insulation techniques. This ensures that every high/low voltage motor shipped provides the necessary mechanical torque output, thermal limits, and durability.

Decades of Industrial Progression

Litesimo Historical Milestones

Our origins as a state-owned industrial enterprise have shaped our engineering discipline. Sixty-eight years of experience form the foundation of our capability to supply heavy-duty high-voltage motors that meet rigorous global standards.

1955
SIMO Motor established and led by government.
1957
Relocated to the newly expanded plant in Xi'an City to scale up national production.
1966
Renamed to Xi'an Motor Factory following strategic industrial acquisitions.
1999
Reformed into a limited liability company to support global trade requirements.
2005
SIMO Motor Group established, scaling up with 14 specialized subsidiaries.
2006
Moved to a modern, high-tech advanced manufacturing facility in Xi'an.
2009
Transitioned corporate branding to Tech Full Simo Motor to reflect enhanced R&D capacity.
2019 - Present
Ranked as one of the best motor manufacturers, introducing automated smart production.
Manufacturing Infrastructure & Assets

Resource Scale & Advanced R&D

The registered capital is 21.5 million RMB. SIMO operates 3 primary manufacturing plants and 1 subsidiary facility. Our operations are supported by fixed assets totaling 380 million RMB and more than 1,172 sets of advanced industrial production equipment.

Our production capabilities are sustained by a workforce of over 1,200 employees, including more than 260 technical engineers, 21 senior engineers, and 15 dedicated industrial experts.

34+
Major Motor Series
1,800+
Motor Varieties
19,500+
Specifications
25,000kW
Max Output Power

Comprehensive Product Portfolio Range (0.35kW to 25,000 kW)

YX, YXKK, YXKS series high-voltage high-efficiency motors; YR, YRKK, YRKS wound rotor slip-ring motors; YE3, YE4, YE5 super high-efficiency low-voltage asynchronous motors; YVFE3, YVFE4, YVFE5 variable frequency speed regulating systems; explosion-proof Ex motors (YBX3, YBX4, YBX5); T, TD, TK, TDMK synchronous motors; TFW large synchronous generators; and Z2, Z4, and Z heavy DC motors.

Macro Industrial Solutions

Aligning motor parameters with operational environments. SIMO designs systems tailored to specific industrial sectors, ensuring long-term reliability and performance.

Mining & Mineral Processing

Designed to withstand dust, moisture, and high starting loads. Our TDMK synchronous motors and wound rotor YRKK series provide the starting torque required for ball mills, crushers, and heavy conveyors.

Metallurgy & Steel Mills

Our Z4 and Z series DC motors provide the speed-torque control required for steel rolling mills, scrap shredders, and heavy-duty wire drawings, operating reliably under cyclic thermal loads.

Petrochemical & Hazardous Ex

YBX3, YBX4, and YBX5 explosion-proof motors are designed to operate safely in zone-classified environments (coal mines, oil refineries, and gas transport systems), meeting international flameproof standards.

Water Utilities & Large Pumps

Highly efficient YXKS water-cooled high-voltage motors and YKK air-cooled induction motors provide continuous service for metropolitan water supply networks, flood control, and agricultural drainage systems.

China Industry 4.0: Supply Chain & Manufacturing Resilience

How Litesimo optimizes lead times and secures material supply chains for large-scale international motor projects.

Modern electric motor manufacturing requires strict material specification control. SIMO employs raw material quality tracing for copper wire purity, non-oriented silicon steel magnetic loss properties, and structural forging integrity. Our factories in Xi’an use computerized CNC machining centers, automated high-speed punching presses, and digital wire winding systems to reduce process variations.

Our assembly line integrates advanced vacuum pressure impregnation (VPI) equipment. VPI coats the stator windings with Class H or Class F insulation resins, removing micro-voids to improve moisture resistance and thermal conductivity.

Quality Control Matrix & Testing Capacity

SIMO features an integrated testing center capable of full-load load testing on high-voltage AC and DC motors. Every unit undergoes vibration testing, partial discharge analysis, and winding resistance verification prior to packaging.

Supply Chain Resilience Measures

In international procurement, logistics predictability is critical. SIMO coordinates with domestic raw material suppliers and international shipping networks to maintain production schedules.

  • Silicon Steel Reserves: Partnerships with top-tier domestic steel manufacturers ensure stable supply even during peak industrial production periods.
  • Insulation Material Testing: Every batch of insulation paper, mica tape, and resin undergoes strict incoming inspection tests to prevent core failures.
  • Export Pack Engineering: Heavy-duty, vacuum-sealed seaworthy packaging protects motors against maritime humidity and transport vibration.

Technical Roadmap & Future Outlook

Pioneering the shift toward ultra-efficiency and digital motor operations to support global decarbonization goals.

IE5 Ultra-Efficiency Transition

We are expanding our product line to transition from IE3/IE4 asynchronous systems to IE5-compliant ultra-high efficiency induction and Permanent Magnet Synchronous Motors (PMSM). This development reduces operational energy consumption by up to 8% compared to standard configurations.

Smart IoT Sensor Diagnostics

SIMO's upcoming motor generations feature options for integrated smart sensors. These modules monitor bearing temperature, vibration patterns, and winding heat outputs in real time, transmitting predictive maintenance data directly to control systems.

Eco-Friendly Resin VPI

We are phasing in zero-VOC solvent-free impregnating resins across our VPI production lines. This process modification reduces carbon footprint during the curing cycle while maintaining high insulation performance under harsh conditions.

Global Certification Standards

Compliance Verification & Localized Technical Support

SIMO has implemented a quality management framework to meet international requirements. Our manufacturing facility is certified under ISO9001 and verified by globally recognized inspection standards.

Our systems meet the specific requirements of international certification bodies. The electric motors we design are certified under EU CE, US UL, Russian GOST, and other standards, ensuring compliance with global industrial safety and performance criteria.

Whether configured for high-altitude mines, petrochemical facilities, or maritime operations, our engineering department provides design support, dimensional drawing adjustments, and structural analysis.

Application Diversity

SIMO electric motors are used in key sectors worldwide, including power generation, coal mining, petrochemicals, metallurgy, rail transit, water management, agricultural irrigation, and aerospace applications.

Verified Certifications

SIMO has passed ISO9001 Quality System Certification, EU "CE", US "UL", Russian "GOST", and more. View a selection of our quality management and international compliance certifications below:

Certification Documents
CE Certificate
UL Certificate
GOST Certificate
ISO Certification
Ex Certificate
Energy Saving Certificate
Technical Compliance Doc
Standard Certificate 1
Standard Certificate 2
Factory Audit Record
Chinese Standard Quality Check
Compliance Sheet
Environment Cert
Standardization Level A
Inspection Authority Approval

Global Enterprise Procurement Checklist

Essential electrical and mechanical metrics to specify when sourcing high/low voltage industrial electric motors from China.

Step 1: Electrical Dynamics

Verify rated grid voltage (3kV, 6kV, 10kV, or custom low voltage) and supply frequency tolerance. Ensure proper integration with Variable Frequency Drives (VFD) by identifying harmonic filters and insulated bearing requirements.

Step 2: Environmental Matching

Define IP ingress protection class (typically IP54 or IP55 for standard applications, higher for wet/mining environments). Specify explosion-proof markings (Ex d, Ex de, Ex e) for oil/gas sites.

Step 3: Mechanical Mounting

Check terminal box positioning (top, left, or right-hand mount). Request certified shaft alignment dimensions, bearing temperature sensor specifications (Pt100 RTDs), and dynamic rotor balancing grades.

Technical FAQ & Selection Guide

Expert answers addressing electrical engineering, thermal protection, and mechanical matching requirements for industrial motors.

Q1: What are the main design differences between YKK and YXKK high-voltage AC motor series?
The YKK series features standard high-voltage induction motor designs, whereas the YXKK series is engineered for high efficiency. YXKK motors use optimized stator and rotor lamination profiles to lower magnetic core losses, meeting international efficiency regulations. Both utilize air-to-air cooling structures, but YXKK motors provide lower running costs under continuous high-load operations.
Q2: How are insulated bearings specified for motors operating on Variable Frequency Drives (VFD)?
Variable frequency drives can introduce shaft currents due to high common-mode voltage spikes (dV/dt). To prevent spark erosion and premature bearing failure (fluting), SIMO recommends installing insulated bearings (ceramic or hybrid insulated sleeve designs) on the non-drive end of motors rated above 110 kW when VFD operation is specified.
Q3: What are the advantages of wound rotor motors (YR/YRKK series) compared to cage induction motors?
Wound rotor motors feature slip rings that allow connection to external starting resistors. This configuration provides very high starting torque with low inrush currents, making YR and YRKK series motors suitable for high-inertia startup applications such as large mining ball mills, rock crushers, and heavily loaded belt conveyors.
Q4: How does Litesimo ensure explosion-proof rating integrity in YBX5 series motors?
The YBX5 explosion-proof motor series uses flameproof enclosures designed to contain internal explosions without igniting volatile ambient atmospheres. All housing junctions are precision-machined, and casing castings undergo hydrostatic flameproof testing. The series is certified to national and international Ex standards for gas and dust-endangered environments.
Q5: What cooling options are available for custom high-voltage AC motors?
Depending on application space limits and ambient temperatures, we offer IC411 (self-fan-cooled, ribbed frame), IC611 (air-to-air heat exchanger type), and IC81W (water-to-air cooling). Water cooling (IC81W) reduces motor volume and operating noise, making it suitable for clean room environments and locations with high ambient air temperatures.