Shaanxi Nanfang Motor Technology Co., Ltd acts as the premier authorized distributor of Wolong Electric Drive Group Co., Ltd (founded in 1984, listed on the Shanghai Stock Exchange under code SH600580 in 2002). Underpinning our global presence are over three decades of dynamic industrial development, culminating in a robust infrastructure spanning 3 manufacturing bases, 39 state-of-the-art factories, and 3 global R&D centers.
Wolong's operational methodology focuses on the specialized manufacture of highly resilient electric motors and control systems. Driven by an uncompromising global brand strategy, Wolong has solidified its leadership position in research and development, materials engineering, process quality, and direct commercial footprint across critical global industrial zones.
Explosion-proof driving systems represent the baseline of safety in chemical refineries, coal processing plants, dust-prone grain processing facilities, offshore oil rings, and marine transport channels. By optimizing heat dissipation structures, eliminating sparks, and isolating internal faults, our motor arrays deliver uninterrupted mechanical force where safety is absolute.
Fully compliant with the directives of ATEX 2014/34/EU and global IECEx schemes. Our motors satisfy high safety standards in Class I, Division 1 & 2, and Zone 1 & 2 hazardous areas.
Engineered to comply with IE3, IE4, and advanced IE5 efficiency standards. Available in permanent magnet synchronous motor (PMSM) variations for maximum torque with minimum carbon footprint.
A vast array of customized designs covering low voltage, medium voltage, and high voltage asynchronous and synchronous models. Designed for complex process industries worldwide.
Wolong coordinates joint technological R&D structures across China, Europe, and Japan, backed by the central Research Institute in Shanghai. This structural integration drives patent formulation and shapes leading global motor topologies.
By consolidating key industrial names including Brook Crompton, Morley, Laurence Scott, Schorch, ATB, and Nanyang Explosion, Wolong retains unmatched intellectual properties in deep mining, maritime propulsion, and heavy petrochemicals.
Our motors are certified for critical reliability, long durability, and spark containment. Fully tested by global institutions to verify compliance with ATEX, IECEx, CU-TR, and local mine-safety protocols.
In 2011, Wolong acquired 97.94% of the Austrian ATB Group, establishing itself as a premier European manufacturer. The transaction incorporated legendary brands like Morley, with a 130-year lineage in high-specification underground coal mining motors, and Laurence Scott, renowned for low-starting current designs for nuclear installations and naval support vessels.
Wolong consolidated Brook Crompton, a century-old pioneer in energy-efficient asynchronous motors, and Schorch (established 1882), a reference standard in heavy industrial drives for the global oil and gas, shipbuilding, and chemical processing sectors.
By 2015, China's largest scientific research and manufacturing hub for explosion-proof drives—Nanyang Explosion Group (CNE)—formally joined Wolong. Coupled with the integration of OLI, the global leader in industrial vibration motors, the group achieved comprehensive production capacity in high-voltage, low-voltage, flameproof, and increased-safety configurations.
In 2018, the commercial and industrial motor division of General Electric (GE) was integrated, bringing decades of American heavy industrial expertise. This alliance reinforced Wolong’s standing in supplying critical machinery across petroleum extraction, water treatment, mining, and power generation.
Our engineering focus integrates robust structural design with optimized electrical features, keeping temperatures low, isolating vibration, and preventing ignition in hazardous environments.
Utilizing a heavy-duty squirrel cage design, our rotors are produced using centrifugal casting or advanced die-casting techniques. Pure aluminum is poured into the lamination slots to form a unified mechanical structure. For higher power outputs, we utilize copper bar rotors with TIG welding on the end-rings to withstand thermal stress and deliver high starting torque.
The stator coils are insulated with high-grade polyester film, glass-cloth backing, and mica tape. The entire assembly undergoes a Vacuum Pressure Impregnation (VPI) cycle, producing a void-free structure. This protection method provides high dielectric strength, moisture resistance, and stable operation in Class F/H thermal classifications.
Engineered using advanced structural and thermodynamic modeling, our cast iron or fabricated steel frames feature high mechanical stiffness. This design optimizes heat dissipation, keeps operational vibration low, and isolates resonance to protect internal components.
The ventilation assembly features an integrated air guide, intake silencer, and protective screen. Side-inlet structures reduce internal turbulence and lower operational noise. Rated at IP22 to IP55, it protects the fan blades while maintaining optimum airflow.
Our driving systems undergo regular testing to satisfy international standards. These quality control measures allow our motors to operate reliably in hazardous locations worldwide.
Nemko / ATEX
CSA Standard
CE Directive
CCC Ex
SABS Standard
TESTSAFE
Our explosion-proof motors are utilized in critical industrial environments globally, driving high-inertia machinery, petrochemical pumps, and deep mine ventilation systems.
The industrial drive market is shifting toward high-efficiency configurations. As organizations target net-zero operations, electric motors must deliver high torque while minimizing power losses. Our development roadmap integrates permanent magnet synchronous motor (PMSM) systems and variable frequency drives (VFD) to achieve IE5 efficiency.
By combining motor drives with remote condition monitoring, operators receive real-time updates on stator temperatures, bearing vibration, and insulation health. This prognostic maintenance capability prevents unplanned downtime and extends the operational lifetime of equipment in hazardous environments.
NANFANG
