Explore our highly certified range of low and high voltage explosion-proof and high-efficiency general purpose AC motors built to international specifications.
Analysis of energy directives, industrial market expectations, and technological transformation paths for global heavy industry machinery drives.
The global demand for industrial electrification is undergoing a rapid evolution. Driven by stringent environmental policies, energy cost spikes, and high uptime requirements, General Purpose Electric Motors have transformed from basic electromechanical power conversion units into highly integrated, digitally optimized components. Modern heavy industries—ranging from oil and gas extraction and deep-level mining to petrochemical processing and municipal fluid distribution—are actively transitioning toward IE3, IE4, and ultra-premium IE5 permanent magnet variable speed drive platforms. This shift is designed to reduce total cost of ownership (TCO) and meet the international standards governing greenhouse gas reduction.
As a leading supplier in the electric drive domain, Shaanxi Nanfang Motor Technology Co., Ltd stands as the authorized distributor of Wolong (Wolong Electric Drive Group Co., Ltd). Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has systematically structured a manufacturing and technology infrastructure that comprises 3 core R&D bases, 39 manufacturing plants, and 3 global technology centers. Driven by a global brand strategy, Wolong's presence in international markets bridges the gap between raw industrial capacity and the specialized engineering requirements of demanding global projects.
Our solutions target safety, performance, and efficiency to keep operations running continuously in high-risk environments.
Our products possess multiple explosion-proof and safety certifications (ATEX, IECEx, CU-TR, EAC) to ensure compliance with localized regulatory safety frameworks globally.
We provide comprehensive motor lines reaching IE3, IE4, and IE5 efficiency levels, including advanced permanent magnet synchronous designs that minimize thermal losses.
From low-voltage squirrel-cage designs to massive high-voltage wound-rotor and positive pressure synchronous drive systems, we cover all hazardous-area applications.
Understanding how Wolong integrated centuries of European and American motor engineering heritage to create a powerhouse of industrial drives.
Wolong acquired a 97.94% stake in the Austrian ATB Group, positioning itself as a major European motor manufacturer. This acquisition integrated Morley (mining industry heritage) and Laurence Scott (low starting current technology for nuclear power plants and navy vessels).
Brook Crompton brought over a century of motor design and technology to the group. Wolong developed full low, medium, and high-voltage AC motor lines through this heritage, introducing the high-efficiency Brook Crompton "W" and "10" series.
Established in 1882, Schorch joined Wolong in 2011. Schorch motors serve oil & gas, chemicals, power generation, waste management, steel processing, and tunnel ventilation worldwide.
Dating back to 1999, Wolong built a partnership with OLI. Today, OLI holds a significant global market share in high-frequency vibration motors and Ex vibration sensors.
As China's largest research and production base for explosion-proof motors, Nanyang Explosion-proof Group (CNE) joined Wolong. Their motors are widely deployed in petrochemical, coal mine, military, and nuclear fields.
GE's commercial and industrial motor division joined Wolong. This partnership combined GE's medium and high-voltage design heritage with Wolong's global production scale.
Our motors are engineered to meet and exceed global regulatory standards, facilitating international trade and local deployment.
Nemko / ATEX
CSA Group
CE Mark
CC Quality Assurance
SABS Approved
TESTSAFE Standard
ISO 9001 Standard: We are a certified ISO 9001 Ex motor manufacturer. This quality control system manages all stages of production, raw material selection, coil winding, assembly, and dynamometer testing.
NEMA Standard: To verify compliance with NEMA electrical and mechanical parameters, our low-voltage and medium-voltage motors undergo efficiency, torque, insulation resistance, and vibration testing, carrying both UL and CSA marks.
IECEx and ATEX: For hazardous locations, Wolong designs, tests, and certifies explosion-proof motors to comply with European (ATEX) and international (IECEx) directives.
TESTSAFE Mining Standard: By securing Testsafe certification, Wolong has established direct channels to supply low and high voltage explosion-proof motors to underground mining projects in Australia and Oceania.
Advanced metallurgy, precision insulation systems, and dynamic balance technologies are central to Wolong's product performance.
We utilize cast aluminum rotors with a squirrel cage configuration, manufactured through centrifugal casting or high-pressure die-casting. This process embeds pure molten aluminum directly into the laminated steel core, forming a single-piece structure with integrated end rings and cooling blades. For larger industrial drives, we construct rotors with solid copper bars that are brazed to heavy-duty copper end rings. This design is engineered to withstand high torque demands and thermal cycles. High-speed models also incorporate carbon-fiber or non-magnetic steel retaining rings to counter centrifugal forces.
Our stator windings use high-grade copper conductors insulated with polyester film and reinforced glass cloth. Ground wall insulation is built using high-mica-content tape. After winding, the entire stator core assembly undergoes a Vacuum Pressure Impregnation (VPI) cycle with solventless epoxy resin. This process eliminates internal air voids, protecting the system against moisture, chemical ingress, mechanical vibration, and thermal degradation. The final assembly meets Class F or Class H thermal limits under continuous load conditions.
Our motor frames are engineered using digital platforms that combine finite element analysis (FEA) and fluid dynamics to optimize structural integrity and heat dissipation. Cast from high-tensile gray iron or welded structural steel, the frames are designed with ample structural margins. This helps isolate mechanical resonance, handle physical shock loads, and manage heat distribution under severe operating cycles.
The ventilation system consists of an engineered fan cover, an internal air guide, and integrated sound-absorbing materials. Air is drawn through side inlets to minimize pressure drops and acoustic turbulence. The fan blade profiles are optimized to provide required airflow across the frame fins while keeping noise levels within industrial safety standards. The fan hood assembly is rated to IP22 protection, preventing external contact with moving parts.
A glimpse into our manufacturing centers, testing labs, and assembly divisions.
How modern Chinese production structures protect global engineering supply lines from volatility.
In an era defined by trade fluctuations, raw material volatility, and shifting logistical bottlenecks, supply chain resilience is a critical consideration for global procurement managers. By embracing Industry 4.0 frameworks, Wolong's manufacturing bases utilize automated, vertically integrated supply structures. From raw iron casting and silicon steel lamination processing to automatic winding and robotic VPI cycles, our internal production pipeline minimizes reliance on external sub-contractors.
This high level of integration translates directly into stable lead times and consistent mechanical tolerances for buyers in Europe, the Americas, and APAC. Shaanxi Nanfang Motor Technology matches this manufacturing capacity with digital inventory management, export documentation support, and logistics integration, helping global clients secure reliable supply lines for their operations.
Ensuring quality control and proper packaging from initial component selection to final international delivery.
Our motors are designed to operate reliably in harsh environments around the globe.
We build explosion-proof motors (such as the YBK3, YBC, and TBVF series) designed to handle methane gas, coal dust, high humidity, and physical shock in underground mining operations.
Our positive-pressure and flameproof motors provide dynamic speed regulation in explosive gas zones, serving critical equipment like centrifugal pumps, fans, and mixers.
We supply high-efficiency motors for bulk fluid transportation, municipal water supply, tunnel exhaust systems, and metal processing facilities requiring continuous power.
Answers to common technical queries regarding insulation classes, certification equivalents, VFD compatibility, and customization.
Explore additional high-performance industrial drives and specialized low-voltage AC motor options from our factories.
NANFANG
