High-efficiency, explosion-proof, and custom engineered motors certified for hazardous environments.
Shaanxi Nanfang Motor Technology Co., Ltd. serves as the premier authorized distributor for Wolong Electric Drive Group Co., Ltd. Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (SH600580), Wolong has evolved into an undisputed global powerhouse in motor and drive system manufacturing. By anchoring our development strategies on cutting-edge research, Wolong has established a wide global footprint that bridges regional gaps in energy efficiency, structural durability, and explosion-proof compliance.
Our collaborative mission is to supply major international markets with high-specification, CE-certified electric motors that lower lifetime operating costs while maintaining absolute compliance with safety directives. Through rigorous supply chain optimization and tailored engineering support, we provide an direct channel to Wolong's comprehensive global manufacturing and R&D ecosystem.
Meeting the demands of modern energy transitions and safety compliance across hazardous environments.
We supply comprehensive explosion-proof drive solutions designed for zones 1, 2, 21, and 22. Our motors carry globally respected certifications to ensure safe operational deployment across high-risk sectors.
We actively combat industrial carbon footprints by providing IE3, IE4, and ultra-high efficiency IE5 permanent magnet electric motor platforms designed to lower system power losses.
From low-voltage auxiliary conveyor motors to custom engineered high-voltage positive pressure systems, our catalog satisfies complex chemical, municipal, and marine specifications.
How Wolong integrated premier global industrial brands to design class-leading rotating machinery.
In 2011, Wolong Group successfully acquired a 97.94% controlling stake in the Austrian ATB Group, positioning itself as a primary supplier in the European rotating machine industry. This acquisition unified several highly respected centennial brands:
By bringing Brook Crompton Motors and Schorch under the Wolong banner, the group fortified its structural technology expertise:
Wolong's strategic growth is further reinforced by global partnerships and targeted brand acquisitions:
A deep dive into the metallurgy, insulation, and aerodynamics of Wolong electric motors.
Our stator coils are insulated with high-grade polyester film reinforced with glass cloth, combined with rich-content mica tape. Once wound, the stators undergo a high-pressure Vacuum Pressure Impregnation (VPI) process. This creates a solid, moisture-resistant structure with excellent dielectric strength and thermal stability, designed to handle voltage spikes and harsh operating conditions.
Our squirrel cage rotors are manufactured using centrifugal aluminum casting or high-precision die-casting, which integrates the rotor bars and end rings. For large-scale industrial motors, we employ copper-bar rotors with reinforced end rings. High-speed units also feature custom retaining rings to ensure stability under heavy centrifugal forces.
Designed using multi-physics structural and fluid dynamic simulations, Wolong frames are cast from high-tensile iron or fabricated from heavy steel plate. The design features integrated cooling fins and high mechanical stiffness, offering excellent vibration absorption, thermal dissipation, and resistance to mechanical impact.
The fan cover system features an integrated air guide cylinder, protection grilles, and sound-absorbing silencer plates. Side-inlet ventilation reduces airflow restriction and intake noise. The design provides IP22 protection to keep particles and personnel clear of rotating blades while maintaining optimal thermal efficiency.
Unlocking access to international markets with verified quality assurance protocols.
Nemko / ATEX
CSA Standard
CE Certification
CC Mark
SABS Approved
TestSafe Ex
Wolong maintains a comprehensive certification framework to support global trade and verify safety compliance across distinct regions:
How our motors power critical operations in demanding industries worldwide.
Our ATEX/IECEx certified explosion-proof motors (such as the YB3 and YZYKS series) drive high-pressure compressors, fluid transfer pumps, and process fans in volatile gas environments where safety is paramount.
Equipped with rugged cast-iron frames and specialized water-cooling systems, the YBC and YBSS series provide high torque and reliable performance for heavy coal shearers and long-distance mine conveyor systems.
Wolong high-voltage YKK and YKS induction motors power large municipal water pumps and ventilation systems, delivering reliable continuous operation and high energy efficiency.
As the industrial sector moves toward automation and reduced carbon emissions, Wolong's product roadmap focuses on three main engineering goals:
Answers to common engineering and compliance questions from procurement professionals.
ATEX is a mandatory European Union directive required for any equipment operating in explosive atmospheres within the EU. IECEx is an international certification scheme recognized across multiple global jurisdictions. Wolong explosion-proof motors are dual-certified under both systems to ensure compliance in both European and global markets.
The VPI process extracts air and moisture from the stator windings under vacuum, replacing voids with a high-grade insulation resin under pressure. This creates a solid, moisture-resistant winding structure with excellent heat dissipation and high resistance to mechanical and electrical stress.
Yes. Utilizing design technologies from Laurence Scott and Schorch, we manufacture custom medium- and high-voltage motors designed for low inrush currents, helping protect weak power grids from voltage drops during startup.
Depending on frame size and starting load requirements, we offer high-pressure die-cast aluminum rotors for standard operations and custom copper-bar rotors with reinforced end rings for high-inertia startup applications.
High-voltage, variable-frequency, and specialty motors for complex industrial projects.
NANFANG
