Explore our premium segment of customized three-phase motors, engineered to maintain synchronization and optimal power factors in demanding industrial environments.
In high-capacity industrial environments, the selection between induction and synchronous three-phase motors is a critical factor for long-term operational efficiency. While asynchronous motors dominate general medium-to-low power applications, Synchronous Three-Phase Motors are the undisputed choice for heavy-duty, continuous-run processes. By maintaining rotor rotation locked with the stator’s magnetic field speed, synchronous motors eradicate rotor slip losses, achieving unmatched efficiency levels.
One of their most powerful advantages is the ability to run at a leading or unity power factor. When excitation is controlled properly, these machines act as synchronous condensers. This compensates for reactive current across the entire facility's electrical grid, directly reducing grid losses, lowering utility demand charges, and stabilizing voltage levels throughout the substation network.
Established as a core force in the Chinese mechanical industry, SIMO leads the market through high-voltage and low-voltage heavy motor design, fabrication, assembly, and testing.
Our comprehensive catalog spans 34 major series, 1,800 varieties, and over 19,500 distinct specifications, with power profiles running from 0.35kW to 25,000 kW. Our elite engineering team creates customized designs tailored to client-specific voltages, excitation systems, frame sizes, and hazardous site layouts.
SIMO operates three specialized manufacturing facilities and one subsidiary plant. Backed by 380 million RMB in fixed assets and 1,172 sets of advanced equipment, our facility executes every phase in-house—including coil insulation wrapping, dynamic rotor balancing, and final performance testing.
Founded in 1955 and state-directed during the early developmental periods of Chinese heavy machinery, SIMO has built over six decades of industry expertise. Today, we rank as a premier supplier of high-efficiency motor systems for global markets.
Discover how SIMO leverages China's industrial ecosystem to deliver high-quality, customized motors with short lead times and outstanding cost-efficiency.
We source cold-rolled non-oriented silicon steel directly from state-of-the-art domestic steel mills. This optimizes core losses and guarantees consistent magnetic flux characteristics across high-volume production batches, minimizing core degradation over time.
Our automated Vacuum Pressure Impregnation (VPI) facility treats high-voltage windings with Class F and H solventless resins. This achieves void-free isolation, high mechanical strength, and superior thermal conductivity, ensuring long-term resilience in harsh conditions.
We perform systematic verification testing at every production stage. Quality checks include ultrasonic rotor inspections, bar-to-bar armature surge tests, insulation resistance checks, and full-load temperature rise measurements in our testing facility.
A retrospective look at over six decades of constant evolution, technological upgrades, and expansion into international markets.
SIMO Motor was established under state guidance, establishing a core foundation for industrial motor manufacturing in northern China.
Relocated manufacturing facilities to a larger site in Xi'an City, scaling up capacity to meet heavy industrial demands.
Reorganized and officially renamed "Xi'an Motor Factory" after a series of strategic consolidations in the regional mechanical industry.
Transitioned from a state-owned factory to a modern limited liability company, introducing agile corporate practices and R&D models.
Established the SIMO Motor Group. The business expanded into 14 specialized subsidiaries, covering all aspects of electrical engineering and components.
Relocated to a modern, high-tech manufacturing plant equipped with state-of-the-art testing stations and advanced CNC equipment.
Rebranded as Tech Full Simo Motor, optimizing global supply chains to support heavy industries worldwide.
SIMO continues to lead in motor design, integrating IoT monitoring and permanent magnet hybrid technologies for next-generation efficiency.
How SIMO synchronous and specialized three-phase motors power critical infrastructure and core industrial processes across the globe.
TDMK series synchronous motors are specifically designed for ball and rod mills in mining operations. They deliver high starting torque and consistent speeds under heavy, variable loads, protecting grid stability at mining substations.
Utilizing low and high-voltage explosion-proof motors (YBX3, YBX4, YBX5 series), SIMO powers critical pumps and gas compressors in hazardous zone environments. These units feature spark-proof housings and meet ATEX/IECEx standards.
SIMO's high-voltage YKK and YKS induction motors drive large-volume centrifugal pumps for city municipal water distribution, cross-regional water transfer networks, and industrial wastewater treatment plants.
To align with global carbon reduction targets, SIMO is driving transition pathways from IE3 standard efficiency to IE4 and IE5 high-efficiency platforms. Our R&D efforts focus on several key engineering areas:
SIMO electric motors are certified to international standards, ensuring safe, reliable, and compliant integration into demanding global markets.
SIMO maintains certified compliance with ISO9001 quality systems, EU "CE", US "UL", Russian "GOST", and Chinese CCC standards. Our products serve global infrastructure in mining, chemicals, metallurgy, and water management.
Get quick, expert answers to common questions about selecting, maintaining, and configuring industrial three-phase synchronous and high-voltage motors.
Unlike asynchronous motors which always draw lagging reactive current from the electrical grid to establish their magnetic fields, synchronous motors supply their own rotor excitation through a separate DC source or permanent magnets. By over-exciting the DC field winding, a synchronous motor operates at a leading power factor, supplying reactive power back to your facility's system. This counteracts the lagging power factor caused by other induction equipment, eliminating the need for expensive capacitor banks and reducing grid demand charges.
Mining mill operations require high starting torque to rotate large drums filled with raw ore and grinding media. The TDMK series features an optimized squirrel-cage starting winding (amortisseur winding) embedded in the rotor pole faces. This allows the motor to start as an induction motor and pull into synchronization once it approaches synchronous speed. The robust frame and Class F/H insulation are built to handle the high vibration and abrasive dust common in mine milling environments.
Our VPI system places the fully wound stator core under a deep vacuum to draw out air and moisture from the insulation layers. We then inject high-grade solventless epoxy resin under pressure, ensuring it fully penetrates the mica tape insulation. This process eliminates internal voids that could cause corona discharges, improves thermal heat dissipation, and prevents moisture ingress, guaranteeing a longer lifespan for high-voltage motors operating up to 10kV.
Brushed excitation uses slip rings and carbon brushes to supply DC current to the rotor. While this design is simple and cost-effective, it requires ongoing brush maintenance and is not suitable for hazardous, explosive environments. Brushless excitation uses an shaft-mounted exciter generator and a rotating diode rectifier assembly. This eliminates mechanical contact, making it virtually maintenance-free and the preferred choice for petrochemical plants and hazardous locations.
Browse our selection of heavy-duty, explosion-proof, and variable frequency three-phase motors designed for global industrial deployment.
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