Explore our primary replacement models customizable to fit legacy footprints.
Founded in 1955, Xi’an Lite SIMO Motor Co., Ltd stands as a premier backbone enterprise in the Chinese mechanical sector. We specialize in the complete scope of large/medium-sized, high/low voltage AC motors, DC motors, synchronous motors, and safety-critical explosion-proof motors.
SIMO operates as a comprehensive manufacturer and global service provider. Our operations encompass state-of-the-art electric motor design, precise mechanical processing, custom mold fabrication, automated assembly, and stringent high-load performance testing. Over decades, the company has consistently maintained its top rank in production scale and technological advancement in China's motor industry.
Underpinning our manufacturing superiority is a robust physical and intellectual infrastructure. Simo manages 3 manufacturing factories and 1 specialized subsidiary plant, backed by fixed assets valued at 380 million RMB.
Our facilities are equipped with 1,172 sets of high-precision machinery. This infrastructure is manned by over 1,200 employees, which includes a dedicated research and development team of 260+ technical engineers, 21 senior engineers, and 15 industry experts.
With a registered capital of 21.5 million RMB, SIMO's engineering capacity spans 34 major product series, covering 1,800 varieties and more than 19,500 distinct catalog specifications. The power output ranges from 0.35 kW to 25,000 kW.
Demonstrating our engineering scale and position as a global leader in electric machinery.
Analyzing legacy system depreciation, dynamic global supply chains, and the economic rationale of upgrading to modern standards.
Heavy industries worldwide are dealing with medium-voltage (6kV, 10kV, 13.8kV) motors that have been in continuous operation for 30 to 50 years. Insulating systems such as stator windings undergo thermal, electrical, and mechanical stress, leading to breakdown. Purchasing a custom-engineered replacement from SIMO offers a cost-effective, plug-and-play alternative to rewinding old frames, while updating performance parameters.
Global buyers in regions like North America, Western Europe, and South America face long lead times and high pricing from Western OEMs for legacy replacements. Modern buyers are looking for suppliers with the agility to duplicate historical dimensions while optimizing efficiency. SIMO meets this demand by offering custom shaft, foot, and terminal configurations at a competitive price point.
Our production facilities utilize automated insulation winding, computer-controlled Vacuum Pressure Impregnation (VPI), and digital test benches. This automation guarantees insulation integrity, high mechanical balance, and structural reliability. The result is a replacement motor with reduced thermal losses and a longer service life.
A common failure point in legacy medium voltage motors is the degradation of the stator coil insulation system. At SIMO, we mitigate this by using a continuous mica-taped, Class F insulation system processed through a state-of-the-art Vacuum Pressure Impregnation (VPI) system. Under deep vacuum, moisture and air voids are evacuated from the windings before epoxy resin is injected under high pressure. This results in a solid, void-free structure with excellent thermal conductivity, resistance to mechanical vibration, and immunity to moisture and chemical contaminants.
One of the primary roadblocks in replacing legacy medium voltage motors is the physical installation. Retrofitting a modern standard motor into a space configured for a 1970s frame often requires expensive modifications to concrete foundations, baseplates, coupling heights, and piping. SIMO’s engineering department excels at designing drop-in replacements. By replicating the exact mounting hole coordinates, shaft dimensions, and terminal box locations of the original motor, we eliminate the need for on-site modifications, reducing your facility's planned outage window.
Sourcing your replacement medium voltage motors from China offers strategic supply chain advantages. Simo leverages a localized cluster of raw material suppliers, including high-grade electrical steel laminations, high-purity oxygen-free copper, and robust castings. This ecosystem reduces raw material lead times and insulates production schedules from global logistics disruptions.
By integrating automated machining centers, robotic welding, and dynamic rotor balancing systems, SIMO maintains high quality control while controlling overhead costs. This efficiency translates directly to competitive pricing without compromising reliability or performance.
Every replacement motor manufactured in our facilities undergoes routine and type testing. Our testing facilities can accommodate full-load testing of high-voltage asynchronous and synchronous motors under actual simulated operating conditions. This verification checks load current, efficiency, power factor, vibration, and temperature rise, ensuring that each motor performs reliably when commissioned on-site.
Engineered to perform in harsh industrial environments worldwide.
For chemical and petrochemical applications, SIMO offers explosion-proof lines like the YBX3, YBX4, and YBX5. Designed to operate safely in volatile atmospheres containing hazardous gases or combustible dusts.
Our heavy-duty slip ring wound rotor motors (YR, YRKK, YRKS) provide the high starting torque required for ball mills, crushers, and heavy conveyors, operating reliably in dusty mining environments.
Highly efficient synchronous motors (T, TD, TK) and high-voltage induction motors drive large water pumps, cooling tower fans, and compressors, helping utilities optimize energy consumption.
We supply custom-designed large-scale DC motors (Z2, Z4, Z series) to maintain precise torque control for kilns and heavy-duty steel rolling mills under variable speeds.
SIMO's extensive product offerings match diverse international standard requirements (IEC, NEMA, GOST).
Our comprehensive research, development, and manufacturing capabilities cover all types of motors, categorized into 34 major series. Our primary replacement product lines include:
Tested and certified by international safety and quality standards to ensure global compliance.
SIMO has successfully passed the ISO9001 Quality System Certification, EU "CE" safety mark, US "UL" safety certification, and Russian "GOST" conformance standards. This ensures that every replacement motor meets local electrical and safety regulations in your region.
Answers to common engineering and procurement questions regarding medium voltage motor replacement.
Additional motor models engineered for high performance and durability.
Lite Simo
