Explore our certified range of high-efficiency low-voltage and high-voltage motors designed for global compliance.
The Authorized Distributor of Wolong Electric Drive Group Co., Ltd
Shaanxi Nanfang Motor Technology Co., Ltd serves as the premier authorized distributor of Wolong Electric Drive Group Co., Ltd. Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has advanced to become a global leader in motor and control system design and manufacturing. Today, Wolong supports industrial growth worldwide through 3 main manufacturing bases, 39 state-of-the-art factories, and 3 localized research and development (R&D) hubs globally.
By implementing a proactive global brand integration strategy, Wolong has combined domestic scientific leadership with a century of European and American motor engineering excellence. This makes Wolong a leading authority on motor technologies deployed in critical safety industries such as petrochemicals, mining, marine engineering, and defense power generation.
Combining world-class legacies under a unified engineering paradigm
Established standard-setting motor manufacturing procedures in Germany. Collaborating globally in shipbuilding, chemicals, steel processing, and heavy industrial tunnels.
Collaborated to commercialize OLI vibration motors and Ex vibration sensors, establishing dominance in global powder processing and industrial screening sectors.
Wolong acquired 97.94% of the ATB Group, integrating Morley (nearly 130 years of underground coal mining expertise) and Laurence Scott (low-starting-current naval/nuclear power motors). Schorch also joined Wolong this year, cementing European operations.
China's largest explosion-proof motor scientific research and manufacturing facility joined the Wolong Group, establishing a unified base for high-voltage and low-voltage positive pressure systems.
GE's commercial and industrial electrical motor division joined Wolong, expanding capabilities in North American oil & gas, water treatment, and materials processing industries.
Adhering to strict global safety protocols to eliminate risk in volatile atmospheres
Our motors carry complete Ex d (flameproof), Ex e (increased safety), Ex p (pressurized), and Ex t (dust ignition protection) certifications, ensuring compliance with EU Directive 2014/34/EU and international IECEx safety schemes.
We lead the transition to energy-efficient operations by manufacturing three-phase permanent magnet synchronous motors (PMSM) and low-voltage AC motors conforming to IE3, IE4, and IE5 international standards.
With TestSafe certification (vital for entry into Australia and the Southern Hemisphere), our heavy-duty mining machinery motors (e.g., YBU, YBC, YBUY) are engineered for reliable underground operation.
ISO 9001-guided manufacturing processes for prolonged operation lifecycle
Our rotors feature advanced squirrel cage geometries utilizing centrifugal cast aluminum or precision-welded copper bars. Centrifugal casting yields a single-piece component that integrates the rotor bars and end rings, preventing internal air gaps. This design enhances mechanical stability under high load cycles. Copper bar variants employ robust end ring induction-brazing to ensure high electrical conductivity and withstand extreme rotordynamic stress in high-speed, variable frequency operations.
The stator coil is wound with premium polyester film-insulated wire and reinforced with glass cloth and high-mica content tape. Following winding, the entire stator core undergoes Vacuum Pressure Impregnation (VPI) with high-grade solventless epoxy resin. This VPI process removes air voids, rendering the stator windings highly resistant to moisture, chemical vapors, oil residue, and mechanical vibrations. It establishes Class F or Class H insulation systems, ensuring thermal margins and stability in hazardous areas.
Designed using multi-physics structural and fluid thermal simulation software, the motor frame is cast from high-tensile, close-grained cast iron (or fabricated structural steel). This optimized housing provides structural rigidity, high thermal dissipation margins, and natural vibration isolation. The design minimizes resonance, absorbs mechanical shocks, and ensures lower temperature rises. It is rated to IP55, IP56, or IP66 ingress protection levels for extreme environments.
Analyzing operating demands across severe global and local environments
Offshore drill rigs and floating production storage and offloading (FPSO) vessels require high reliability. Salt-spray, chemical corrosion, and volatile gas envelopes require Ex d flameproof enclosure motors. Our positive pressure shell motors (YZYKK and TZYW series) maintain an internal overpressure of clean air or inert gas, preventing explosive mixtures from contacting active electrical elements.
Underground coal extraction involves flammable coal dust and methane gas hazards. The YBU, YBUS, and YBC series are tailored for coal shearers and continuous conveyor setups. Equipped with high torque capacity and reinforced steel housings, these motors handle high overload currents and mechanical impacts. The water-jacketed cooling option keeps surface temperatures below critical ignition limits.
Continuous-process chemical lines cannot tolerate unplanned downtime. Our WE3 and YBX4 energy-saving motors drive high-capacity centrifugal pumps, compressors, and ventilation fans. These motors are optimized for variable speed drive (VSD) systems, preventing high-frequency voltage spikes from degrading stator insulation and reducing overall utility consumption.
Pioneering smart, green, and highly efficient electric drive systems
Wolong's global R&D networks in Europe, Japan, and Shanghai are executing a forward-looking technological roadmap. This roadmap bridges traditional safety designs with digital monitoring and high efficiency.
We are upgrading our electric drive systems from standard induction designs to Permanent Magnet Synchronous Motors (PMSM) and Synchronous Reluctance Motors (SynRM). Operating without rotor cage losses, these machines achieve IE5 efficiencies, reducing energy loss by up to 30% and supporting global decarbonization initiatives.
Our upcoming Ex-certified motors feature integrated smart vibration, temperature, and magnetic flux sensors. Integrated with edge analytics platforms, these systems monitor operating variables to predict bearing failure or insulation breakdown before they cause downtime in hazardous zones.
We are expanding our modular frame platform (up to 15kV) to allow quick customization of cooling methods (IC411, IC611, IC81W) and terminal box arrangements. This speeds up design cycles for complex global petrochemical and mining engineering designs.
Combining raw material accessibility, advanced automation, and global logistics
Operating from our major manufacturing complexes in Nanyang and other Chinese hubs, Wolong benefits from a vertically integrated supply chain. We source silicon steel sheets, copper wiring, and cast components locally. This structure minimizes vulnerabilities in global raw material logistics and ensures stable production scheduling.
Our production facilities utilize robotic winding systems, automated VPI chambers, and CNC machining centers. This automation ensures component consistency and dimensional stability. Our testing fields conduct full-load routine testing, dynamic balancing, and Ex containment verification for every motor configuration before dispatch.
By coordinating with localized component suppliers, we maintain steady delivery cycles even during periods of high global demand.
Our localized manufacturing scale allows us to offer premium explosion-proof technology at competitive prices without compromising E-E-A-T standards.
Validating electrical safety, explosion protection, and quality assurance
Technical answers to common queries on Ex motor applications and certifications
Reliable operations with ATEX/IECEx certified heavy duty drives
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