Engineered to exceed ATEX, IECEx, and CE Standards for heavy duty and high-risk applications worldwide.
Underground mining, chemical plants, and heavy industrial machinery require absolute compliance and motor resilience. Shaanxi Nanfang Motor Technology Co., Ltd. presents the unified technical standard for heavy machinery drives.
In the heavy industrial domain, explosion-proof integrity is not merely a benchmark of quality—it is the baseline for hazard prevention and operational continuity. Underground mining ecosystems are perpetually exposed to combustible firedamp (methane) and coal dust. The CE Certification Morley Motor stands as the structural paradigm of flameproof integrity. Drawing from nearly 130 years of British legacy in coal mining drives, Morley motors, under the corporate umbrella of Wolong Electric Drive Group, are optimized for safety, power dense designs, and high-efficiency operations.
Through global acquisitions and R&D integrations, Wolong has combined the manufacturing prowess of ATB, Brook Crompton, Laurence Scott, Schorch, OLI, Nanyang Explosion-proof Group (CNE), and GE. This dynamic network empowers regional heavy industries to deploy motor configurations that satisfy international frameworks including ATEX directives, IECEx guidelines, CE compliance, NEMA protocols, and SABS requirements.
The convergence of industrial giants under Shaanxi Nanfang Motor Technology and Wolong Electric Drive Group.
Founded in 1984 and listed in 2002 (code SH600580), Wolong Electric Drive Group Co., Ltd. has developed over 30 years to control 3 global manufacturing bases, 39 manufacturing factories, and 3 advanced R&D centers. Shaanxi Nanfang Motor Technology acts as the vital engineering distributor, providing customers with technical validation, system engineering design, and direct integration with global heavy industry supply systems.
WOLONG's acquisition of 97.94% of the Austrian ATB Group brought Morley Motors and Laurence Scott under its technical umbrella. Morley, with a century-long legacy in British underground mines, is synonymous with heavy-duty coal shearer and conveyor systems. Laurence Scott pioneered low starting-current systems for British nuclear power plants and marine applications, securing the Queen's Award for three consecutive years.
Brook Crompton's premium "W" and "10" series bring low, medium, and high voltage AC solutions designed to handle harsh environments. Operating alongside Schorch (established in 1882 in Germany), these brands provide key solutions for international oil & gas projects, municipal water distribution, shipbuilding, and complex steel mills.
By integrating Nanyang Explosion-Proof Group (CNE)—China's largest scientific R&D base for flameproof systems—and acquiring GE's commercial and industrial motor division in 2018, Wolong solidified its position in large-scale global markets. These integrations support critical operations in oil extraction, refinery processing, coal chemical industries, and nuclear power utilities.
Analyzing the internal components of CE Certified Morley Motors and Wolong premium drive platforms.
The rotor assembly utilizes specialized cast aluminum designs made via centrifugal or die-casting techniques. Pure, high-grade aluminum is cast directly into the core slots to form unified rotor bars and end rings, delivering excellent electrical continuity and mechanical strength. For larger, heavy-duty applications, copper bar rotors with TIG welded end rings are used to withstand structural forces and startup currents.
The stator coil is insulated with polyester film and glass-reinforced, high-content mica tapes. Through the Vacuum Pressure Impregnation (VPI) process, voids are eliminated. This structure provides high dielectric strength, moisture isolation, mechanical stability, and thermal resistance, keeping the motor within its Class F thermal limits even under high loads.
Engineered using digital multi-physics and thermal flow software, the high-strength cast iron frame is built with optimized heat-dissipation fins. This design helps minimize thermal stress, isolates structural vibration, and absorbs external mechanical shocks, protecting internal alignments in tough environments.
This system integrates a contoured air guide cylinder, protective mesh, and sound-absorbing silencer plates. By positioning the air intakes on the side, it reduces entry restrictions, lowers air noise, and helps prevent foreign particles from entering. The fan cover meets IP22 protection safety standards to keep operators safe during use.
Compliance documentation enables cross-border project installation and regulatory acceptance.
Nemko / ATEX
CSA Standard
CE Compliance
China Compulsory (CCC)
SABS South Africa
TESTSAFE Australia
How Shaanxi Nanfang Motor and Wolong ensure supply stability for global heavy industries.
In a volatile global market, maintaining raw material quality and steady lead times is critical. Wolong's production infrastructure in China, particularly at the Nanyang explosion-proof facility, leverages a strong local ecosystem of raw material suppliers and advanced manufacturing technologies. From silicon steel lamination to precision copper drawing and computerized VPI chambers, we maintain close oversight over every step of the process.
This domestic production base helps insulate our operations from international shipping backlogs and raw material fluctuations. By combining local assembly speed with European design standards from ATB Morley, we deliver custom, project-specific heavy motors with reliable, predictable lead times.
Additionally, our digital quality tracking systems monitor testing data—such as high-voltage surge diagnostics, vibration signatures, and load testing—for every motor before it leaves the factory. This guarantees that your equipment arrives on-site ready to perform, reducing field commissioning times and startup risks.
Providing reliable electric drives for demanding environments, from high-gas mines to offshore gas platforms.
Specifically designed to handle space constraints and high mechanical loads, our YBC and YBSS motors power continuous mining machinery. They feature water-cooled jackets and flameproof enclosures that help ensure safe, reliable operation in high-dust and high-gas underground mining zones.
YBX4 and YBX5 explosion-proof motors drive large, heavy-duty pumps, fans, and compressors in refineries. These motors offer reliable gas-tight protection that helps prevent environmental contamination or ignition events in hydrocarbon environments.
Our YQ marine series feature corrosion-resistant frame coatings, Class H insulation, and international classification approvals (such as DNV, ABS, and Lloyd's Register) to ensure reliable operation in salt spray and humid conditions.
Our R&D efforts focus on three primary development paths: Smart Monitoring, Permanent Magnet Efficiency, and Integrated Safety.
| Development Target | Technological Solution | Expected Impact | Current Deployment Status |
|---|---|---|---|
| Smart Monitoring & IoT Integration | Ex-certified digital sensors (such as OLI vibration sensors) to track real-time temperature, current, and vibration. | Enables predictive maintenance, helping to reduce unscheduled operational downtime. | Available on custom-order high-voltage units. |
| High Energy Efficiency Systems | Transitioning to PMAC and Permanent Magnet Synchronous Motors (such as our WEPM and TBVF series). | Exceeds IE5 efficiency regulations, helping to reduce operational energy costs. | Standard configurations available up to 450 kW. |
| Increased Ex Safety Performance | Optimizing positive pressure purge housings (YZYKS) with automated purging controls. | Provides high levels of safety for hydrogen and ethylene processing environments. | Fully certified and available in production. |
Shaanxi Nanfang Motor provides technical support and service teams to help ensure your projects run smoothly.
Purchasing heavy machinery is only the first step. Ensuring long-term reliability requires specialized, responsive technical support. Shaanxi Nanfang Motor Techmology offers localized engineering assistance, including on-site startup support, regular diagnostic maintenance, and customized training for your operations teams.
Our technical team can help configure protection relays, align motor controls with variable speed drives, and conduct safety audits to ensure installations meet local explosive environment directives. This local support helps protect your equipment investment and keep operations running reliably.
Common questions regarding motor certification, selection, and application safety.
Explosion-proof, marine, and permanent magnet drive designs built to perform in demanding industrial conditions.
NANFANG
