Engineered for hazardous zones, marine application, and heavy industrial automation workloads.
The industrial drive landscape is witnessing a structural shift toward high-performance Permanent Magnet Synchronous Motors (PMSM). Spurred by strict decarbonization protocols and the quest to lower Total Cost of Ownership (TCO), industrial operations are shifting from traditional induction designs to direct-drive permanent magnet solutions.
Historically, induction motors dominated industrial drives due to their simplicity and direct-on-line operation. However, the inherent rotor copper losses limit their capacity to meet IE4 or IE5 efficiency profiles economically. Magnet motors utilize high-grade NdFeB (Neodymium Iron Boron) rare-earth magnets to establish rotor flux without electrical excitation, eliminating rotor heat losses and yielding energy savings of 10% to 30% under partial load conditions.
Modern industrial sourcing managers look beyond purchase price, evaluating strategic parameters like:
Procurements in petrochemical and mining zones mandate ATEX, IECEx, and SABS certificates.
Access to rare-earth materials and vertical integration protect OEMs from component bottlenecks.
Customized shafts, specialized voltages, and custom stator cooling interfaces (VPI-insulated windings) are essential for retrofitting legacy plants.
Connecting heavy industrial markets with Wolong Electric’s worldwide manufacturing capacity.
Shaanxi Nanfang Motor Technology Co., Ltd. serves as the authorized partner of Wolong Electric Drive Group Co., Ltd. Established in 1984 and listed in 2002 (code SH600580), Wolong operates a globally integrated manufacturing network comprising 3 manufacturing bases, 39 factories, and 3 engineering R&D hubs. With a focus on electric motor design and drive systems, Wolong connects local customer needs with global innovation.
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Countries Served
Core Patents
Mega Projects Completed
High-efficiency, certified electric motors engineered for hazardous areas and heavy industrial automation.
Full suite of international explosion-proof certifications, enabling compliance in chemical plants, oil refineries, and subterranean mining sites.
A broad array of permanent magnet motors designed to exceed IE4 and IE5 standards, delivering low operating costs and reduced thermal footprints.
Comprehensive product lines supporting low-voltage, medium-voltage, and high-voltage three-phase synchronous and asynchronous solutions.
Strategic technology acquisitions that established a leading position in motor manufacturing.
Wolong acquired a 97.94% controlling stake in the Austrian ATB Group, one of Europe's three major motor manufacturers. This brought brands like Morley and Laurence Scott into the Wolong family.
Morley brings nearly 130 years of history in underground coal mining applications, delivering high-performance explosion-proof mining motors. Laurence Scott, a pioneer in low starting current systems, supplies motors and generators for British nuclear plants and naval vessels.
Brook Crompton brought a century of design experience in low, medium, and high voltage AC motors. Their range covers standard applications as well as harsh, hazardous environments, offering energy-efficient motor systems and adjustable speed drive packages.
Schorch, founded in 1882, is recognized for heavy-duty systems used in oil & gas, chemical plants, power generation, water management, steel processing, and infrastructure projects.
By partnering with OLI, Wolong expanded its reach in industrial vibration motors and sensors. In 2015, the addition of Nanyang Explosion-Proof Group (CNE)—China's largest research and production base for explosion-proof motors—reinforced capabilities in oil, coal, and nuclear applications.
In 2018, the acquisition of General Electric's commercial and industrial motor division brought additional industrial design expertise, supporting applications in petrochemicals, mining, power generation, and water treatment.
Advanced structural and electrical design optimized through multi-physics simulation.
Our rotors feature squirrel cage designs built with centrifugal cast aluminum or die-casting techniques. This construction integrates rotor bars and end rings, ensuring mechanical reliability and consistent torque characteristics.
For high-capacity motors, copper bar rotors with welded end rings are used. High-speed models also incorporate protective retaining rings to manage centrifugal forces during transient operations.
The stator coils use polyester film and glass cloth reinforced with low-powder mica tape. After winding, the assembly undergoes Vacuum Pressure Impregnation (VPI).
This process eliminates air pockets, protecting the windings against moisture, chemical exposure, and thermal degradation. The insulation system is engineered for long-term dielectric performance under variable frequency drive harmonics.
Developed using structural and fluid dynamics modeling, our frames are cast from high-strength iron or steel. This design ensures mechanical rigidity and thermal dissipation.
The structure dampens structural resonances, helping the motor withstand shock loads and maintain low vibration levels across its operational speed range.
The cooling assembly includes an air guide cylinder, protective window, and silencer plate, housed in a compact fan cover. The side-entry air intake minimizes ventilation losses and noise caused by air turbulence.
Sound-damping linings reduce operational noise levels. An IP22 rating on the inlet prevents contact with the fan blades, maintaining operator safety without restricting cooling airflow.
High-capacity smart manufacturing designed for global industrial demands.
Wolong’s manufacturing facilities use Industry 4.0 automation, linking real-time demand signals with robotic assembly and testing lines. Automated stator winding machines, VPI lines, and precision rotor balancing systems maintain consistent quality and reduce human error.
Our raw material supply chain ensures steady sourcing of essential materials, including high-grade electrical steel laminations and NdFeB rare-earth magnets. This vertical integration helps insulate production schedules from global material price spikes and supply disruptions, ensuring reliable delivery timelines for large projects.
Compliance documentation supporting smooth integration into international markets.
Nemko/ATEX
CSA
CE
CCC
SABS
TESTSAFE
Our motors are manufactured and tested to meet international standards:
Reliable performance across demanding global industries.
Designed with flameproof enclosures (Ex d/Ex de) to drive high-capacity pumps, mixers, and gas compressors. VPI-treated stators withstand corrosive vapors and ambient humidity.
High-torque conveyor motors built for rugged conditions. Dust-ignition-proof designs (Ex tb/Ex tc) prevent dust penetration in coal handling and processing systems.
IE5 permanent magnet motors power municipal intake and distribution pumps, maintaining high efficiency during varying demand patterns under variable frequency control.
Through Wolong's regional service centers, we provide localized support including commissioning assistance, custom shaft and flange modification, and rapid-response spare parts logistics.
Technical guidance and product support for industrial drive projects.
PMSMs eliminate rotor I²R copper losses by utilizing permanent magnets rather than electrical current to generate rotor flux. This allows the motor to maintain high efficiency across its operating speed range, including under partial loads (30% to 80% load curves). This profile helps operators achieve IE5 efficiency levels, reducing total lifecycle energy costs.
Our motors carry global certifications including ATEX (Europe), IECEx (International), CSA (North America), SABS (South Africa), and TESTSAFE (Australia). These products are designed for Ex d (flameproof), Ex e (increased safety), Ex p (pressurized), and Ex t (dust ignition proof) installations, making them suitable for oil, gas, chemical processing, and mining operations.
Through Wolong Electric's centralized purchasing and raw material partnerships, we maintain stable access to high-grade NdFeB magnet alloys. This vertical supply integration helps protect production schedules and pricing from volatility in the rare-earth market, supporting reliable delivery timelines.
Yes. We can customize motor frames, shaft ends, mounting flanges, terminal box positions, and RTD temperature monitoring systems. This allows new, high-efficiency motors to fit into existing legacy footprints with minimal mechanical modification.
Standard PMSMs require a variable frequency drive (VFD) with appropriate software control (such as vector or sensorless field-oriented control) to align with stator field changes. Running a synchronous motor directly on-the-line without a VFD can cause starting issues unless a specialized line-start permanent magnet motor (LSPM) is selected.
A broad range of high-efficiency AC motors designed for industrial applications.
NANFANG
