Engineered for extreme performance, hazardous environments, and premium efficiency across global power grids.
Shaanxi Nanfang Motor Technology Co., Ltd is the authorized distributor of Wolong. Wolong Electric Drive Group Co., Ltd was founded in 1984 and successfully listed in 2002 (code SH600580). After more than 30 years of high-speed development, Wolong operates 3 manufacturing bases, 39 factories, and 3 R&D centers worldwide now. Focusing consistently on the development and production of high-end motors and control systems, Wolong is dedicated to a global brand strategy, making it a prominent leader in R&D, manufacturing technology, precision processes, and global sales networks.
Combining immense vertical integration with global engineering synergy, China-based production lines offer unique quality-to-cost indexes.
Our manufacturing hubs in China optimize steel core laminations, ultra-pure copper coil winding processes, and heavy-duty cast-iron casting within a highly integrated logistics ecosystem. This ensures rapid production cycles, optimized freight options, and dynamic custom frame designs without delaying schedules.
Wolong has established advanced motor and drive control R&D centers in China, Europe, and Japan, with a central research institute located in Shanghai. Through active integration of cross-border technologies, we develop leading products in motor simulation and control systems, ensuring that our systems stand at the pinnacle of international technological advancement.
As one of the world's most trusted motor manufacturers, Wolong holds key competitive advantages in overall motor safety, explosion-proof performance, mechanical resilience, and long-term durability. Our industrial motors are widely used in dangerous oil, gas, chemical processing, and mining projects worldwide, fully certified by ATEX, IECEx, and EAC standards.
Through strategic international partnerships and acquisitions, Wolong has combined top-tier motor brands to form a robust industrial ecosystem.
Wolong successfully acquired 97.94% of the Austrian ATB Group (ATB motor), one of the three major European motor manufacturers. This brought premier European technology, design compliance, and high-efficiency motor architecture to the Wolong production catalog. The ATB acquisition also brought under our banner the highly respected Morley brand (representing 130 years of heavy-duty coal mine motor experience) and Laurence Scott (well-known for low starting current engineering in British nuclear power stations and naval ships).
Schorch (Germany), established in 1882, joined the Wolong Group. Known for setting global standards in premium high-voltage driving systems, Schorch specializes in heavy projects in petrochemicals, power generation, large-scale water tunnels, and metal refining industries.
CNE, China's largest explosion-proof research and development organization, joined Wolong. This consolidated our domestic leadership in specialized motors designed for petrochemical operations, aerospace, coal mining, and nuclear power generation plants.
GE’s industrial motor operations integrated with Wolong, merging their historic, century-old legacy of commercial electrical systems with our advanced manufacturing footprint to serve high-duty applications globally.
The consolidation of Brook Crompton Motors brought in premium "W" and "10" low, medium, and high voltage asynchronous motor lines. Additionally, joint operations with OLI Vibration Motor in China since 1999 have made us a major manufacturer in vibration motors (MVE) and specialized Ex vibration sensors.
Under the hood of our CE Certified general purpose three-phase motors. Precision component engineering ensures thermal stability and structural redundancy.
Our rotors feature robust squirrel cage geometry, utilizing premium cast aluminum created via centrifugal or die-casting techniques. Molten pure aluminum is injected into the rotor core slots to form integrated rotor bars and end rings, ensuring reliable torque output and mechanical integrity. For high-output or heavy-duty industrial tasks, copper bar rotors are used. These feature advanced end-ring welding and bar security systems, alongside dynamic high-speed safety rings, to ensure stable operation at high RPMs.
Coils are insulated using high-content polyester film and glass-fiber tapes. The assembled stator core goes through our advanced Vacuum Pressure Impregnation (VPI) process to ensure zero internal voids. This advanced isolation treatment provides excellent insulation class performance, high mechanical strength, resistance to moisture ingress, and thermal durability under continuous operating temperatures.
Our motor frames are optimized using advanced structural and fluid multi-physics simulation platforms. Cast from high-tensile gray iron or welded structural steel, the frames are designed with generous structural redundancy and heat dissipation fins. This design helps minimize structural vibration and resonance, ensuring low operating temperatures and reliable performance under high mechanical loads.
The cooling system includes a lightweight fan cover body, an air guide cylinder, protective windows, and acoustic damping plates. By positioning the air intakes laterally, the design avoids intake blockages from rear obstructions. Sound-absorbing materials inside the hood minimize high-frequency noise from the air path, and the assembly is rated IP22 to prevent accidental contact with the rotating fan blades.
Our products are fully certified by leading testing authorities, smoothing the path for international trade and helping clients meet strict safety standards.
Our general-purpose three-phase electric motors are CE marked, complying with the EU Low Voltage Directive, Machinery Directive, and EMC Directives. This simplifies importing and operating procedures within the European Economic Area.
Our motors are tested against NEMA's mechanical and electrical standards, including tests for torque characteristics, insulation class resistance, and starting current efficiency. For the North American market, we offer certified CSA and UL-compliant low-voltage motors.
For operations in hazardous environments, our explosion-proof motor series carry certified ATEX and IECEx documentation, ensuring safety in areas with flammable gases, dusts, or coal mine dampness.
Holding TestSafe certification allows us to supply high-spec explosion-proof coal mining motors directly to the Australian market, verifying that our equipment meets stringent local safety requirements.
Our electric motors are designed to handle demanding industrial processes, ensuring reliable operation across various applications.
Explosion-proof motors provide reliable power for pumps, compressors, and pipeline transport systems in zones where flammable hydrocarbon vapors are present.
Dust-tight and flameproof motors drive coal shearers, continuous mining equipment, and underground conveyors in demanding, dusty environments.
High-efficiency three-phase motors run municipal water supply pumps, wastewater aeration systems, and cooling tower ventilation fans continuously and reliably.
Corrosion-resistant electric motors are engineered to withstand saltwater exposure, driving on-deck winches, propulsion systems, and auxiliary machinery.
The industrial powertrain market is shifting toward higher efficiency, intelligent condition monitoring, and sustainable materials.
Increasing electrical energy costs and stricter national grid rules are pushing procurement managers to upgrade from legacy IE2/IE3 motors. Utilizing Permanent Magnet Synchronous Motors (PMSM) paired with variable frequency drives helps reduce total cost of ownership by saving substantial power under partial-load operations.
Modern plants are adopting motor vibration sensors, thermal probes, and remote diagnostic systems. Real-time monitoring of insulation condition and bearing temperatures allows maintenance teams to fix issues before they cause costly downtime.
Industrial operations require dual-brand sourcing strategies to manage geopolitical trade issues. Wolong's network of 39 factories across China, Vietnam, Europe, and the Americas provides reliable supply security, local technical support, and component availability.
Find answers to common technical, design, and regulatory questions from engineering and procurement teams.
NEMA (National Electrical Manufacturers Association) and IEC (International Electrotechnical Commission) differ primarily in dimensions and testing metrics. NEMA frame sizes are designated in inches and specify standard service factors, while IEC frame dimensions are metric. IEC motors are commonly categorized by duty cycles (S1–S9) and efficiency classes (IE1–IE5).
The VPI process extracts air and moisture from the stator slot windings under vacuum, replacing them with liquid resin under pressure. This eliminates air voids inside the insulation system, providing resistance against moisture, chemical corrosion, and mechanical vibrations, and improves heat dissipation from the coils.
Operating a motor on a VFD can induce shaft voltages, leading to electrical discharge through the bearings (bearing erosion). For variable frequency motors, we install insulated non-drive-end bearings or grounding rings to divert these currents, helping prevent early bearing wear.
IE3 represents Premium Efficiency, IE4 is Super Premium, and IE5 is Ultra-Premium. Upgrading from IE3 to IE4 typically reduces internal energy losses by about 15%, while upgrading to IE5 achieves even higher savings. This reduction is often accomplished through electromagnetic design optimizations and permanent magnet technologies.
Full catalog of explosion-proof, synchronous, variable-frequency, and specialty marine motors from our manufacturing facilities.
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