Shaanxi Nanfang Motor Technology Co., Ltd stands as the premier authorized distributor of Wolong, offering an unparalleled bridge between global engineering demands and cutting-edge industrial electric motor technologies. Founded on the values of technical expertise and uncompromising safety standards, we serve heavy industries worldwide with certified motor configurations engineered for hazardous explosive atmospheres.
Our parent manufacture partner, Wolong Electric Drive Group Co., Ltd., was established in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580). For nearly four decades, Wolong has expanded its technological horizon, operating 3 major manufacturing bases, 39 advanced factories, and 3 global R&D centers. Through an aggressive global brand integration strategy, Wolong has established itself as the world-leading developer and manufacturer of industrial motor control systems.
By leveraging Shaanxi Nanfang's localized engineering support and Wolong's massive industrial manufacturing footprint, we supply global markets with certified Ex d, Ex de, Ex e, and Ex tb electric drives. Every component is tested to meet the highest safety margins under extreme heat, dust, and corrosive environments.
Wolong's technical leadership is reinforced by the acquisition and integration of legendary European and American electric motor pioneers, bringing together over a century of specialized industrial design.
Acquired by Wolong in 2011, the Austrian ATB Group represents one of Europe's top three motor manufacturers. Within this portfolio, Morley Motors brings over 130 years of pedigree in underground coal mining drives. ATB Laurence Scott provides highly specialized low-starting-current marine generators and safety-critical drives for global nuclear plants, consistently earning prestigious engineering accolades.
With more than a century of masterwork in high-efficiency design, Brook Crompton has set the standard for premium "W" and "10" series hazardous environment motors. Similarly, Schorch (integrated in 2011) has driven major global petrochemical, gas, and tunnel ventilation schemes since 1882, defining German engineering precision.
In 2018, Wolong integrated General Electric’s (GE) commercial and industrial motor division, absorbing the oldest name in American electrical grids. This merged with the massive domestic base of CNE (Nanyang Explosion-proof Group) in 2015, forging the world's most robust R&D framework for oil, gas, and aerospace applications.
China's specialized industrial clusters allow Shaanxi Nanfang Motor to source copper wires, custom core lamination stamps, and high-strength gray iron castings within a highly optimized supply radius. This structural advantage translates to shortened manufacturing schedules and optimized production costs compared to Western operations, without ever compromising technical parameters.
Every motor design undergoes exhaustive simulation on multi-physics computing platforms before structural casting. The state-of-the-art testing centers at Nanyang allow full-load thermal trials, vibration tracking, and flame propagation resistance certification in environments that replicate actual hazard field conditions. This ensures that every shipped ATEX motor meets the required safety limits with reliable durability.
Whether configuring tailored dimensions for legacy retrofits or customizing multi-voltage windings (from 220V up to 13.8kV), our Chinese assembly plants provide modular adjustments to match unique mechanical setups. We offer optional add-ons including PT100 temperature sensors, space heaters, and customized shaft sealing options.
From volatile gas installations to underground mine galleries, our motor systems are tailored for highly specific risk mitigation challenges across diverse sectors.
Operating in environments with volatile hydrocarbon gases (Groups IIA, IIB, IIC) requires precise flameproof casing integrity. Our ATEX/IECEx certified motors (such as the YBX3 and YBBP series) provide flameproof envelopes that contain any internal spark, preventing gas ignition in Zone 1 and Zone 2 refineries and LNG processing plants.
Saltwater air, moisture, and high ambient temperatures require extreme corrosion protection. Leveraging our YQ Series marine low-voltage motors with DNV Type Approval, we provide vessels, drillships, and FPSOs with water-tight insulation systems, rust-resistant coatings, and reliable performance under high pitch and roll conditions.
Methane gas and fine coal dust present continuous explosion risks. Utilizing the legacy designs of Morley and CNE, we manufacture explosion-proof mining drives (such as the YBSD conveyor motor) capable of handling heavy starting loads, high vibration, and restricted ventilation conditions in deep mine galleries.
The rotor features a rugged squirrel cage design, utilizing cast aluminum rotors that are widely integrated into standard operations. Produced through centrifugal aluminum casting or precision die-casting techniques, molten pure aluminum is poured directly into the slots of the rotor core. This forms a single-piece construction integrating the rotor bars and end rings, guaranteeing excellent structural reliability and outstanding torque properties.
For high-capacity or heavy-duty starting applications, copper bar rotors are employed. These benefit from secure copper bar containment and high-grade end ring welding procedures. High-speed models are fitted with protective rings, ensuring dynamic stability and reliable operation of the copper bar rotor under continuous mechanical stress.
The core coils are crafted from premium polyester film reinforced with high-density glass cloth. Insulation layers utilize low-powder mica tape with high mica content, or medium-powdered mica tape with an abundance of mica. Following assembly, the wound stator undergoes our advanced VPI (Vacuum Pressure Impregnation) process.
This process extracts moisture and air voids under vacuum before pressure-impregnating high-grade resin, resulting in a pristine white coil when cured. This precise VPI process protects the winding against moisture ingress, environmental contamination, mechanical vibration, and thermal cycling, ensuring class-leading insulation lifetime.
Our motor frames are developed on a digital platform utilizing multi-physics field simulations for fluid, thermal, and structural analysis. This platform optimizes the original patented designs to match modern installation footprints while maintaining structural integrity. Constructed from mature, high-strength cast iron (or structural steel as an option), the frame provides excellent safety margins.
With high heat dissipation capabilities and natural frequency vibration isolation, our frames are built to absorb significant mechanical shock, limit housing resonance, and maintain low temperature rises across all operating conditions.
The ventilation architecture consists of a robust fan cover, air guide cylinder, protection window, and integrated silencer plate. This layout provides efficient cooling in a compact, lightweight configuration. Placing the air intake on the side helps avoid obstructions behind the motor, minimizing adverse effects on ventilation and reducing noise caused by energy loss during air propagation.
By incorporating sound-absorbing materials along the interior channels, overall motor noise is significantly reduced. In compliance with safety standards, the hood is rated IP22, preventing accidental contact with the rotating fan blades.
Today, Wolong operates as a global pioneer in advanced electric motor manufacturing and drive technology, leveraging an international network of research facilities and production bases to support global industrial infrastructure projects.
To support global market access, Wolong maintains certification compliance across multiple international frameworks, enabling product distribution into all major industrial markets.
ISO 9001 standard: Wolong operates as an ISO 9001 certified manufacturer of explosion-proof motors, establishing a baseline quality management framework for international trade and industrial production processes.
NEMA standard: To verify compliance with NEMA mechanical performance specifications, our low-voltage motors undergo comprehensive testing, including efficiency, insulation resistance, starting current/torque, and vibration analysis, and carry UL and CSA approvals.
IECEx and ATEX standard: High and low voltage explosion-proof motors are certified to both IECEx and ATEX standards, supporting compliance requirements for chemical, oil, and gas installations across Europe and global markets.
TESTSAFE standard: Compliance with TestSafe standards supports the export of Chinese-manufactured coal mining motors into Australia, establishing a baseline of compatibility with local regulatory requirements.
Industrial operations are increasingly adopting energy-efficient solutions to reduce operating costs and support carbon reduction targets. Shaanxi Nanfang Motor supports this transition by supplying Wolong high-efficiency explosion-proof permanent magnet (PM) motors that exceed standard IE3 values, offering lower energy consumption under continuous operation.
Modern plant operations rely on digital vibration and temperature monitoring to plan maintenance intervals. Our hazardous area motors are compatible with ATEX/IECEx certified sensors, enabling vibration and winding temperature data to be integrated directly into control systems to help prevent unexpected failures.
Engineering procurement contracts (EPC) require strict compliance with local safety regulations and standard dimensions. Shaanxi Nanfang Motor works with project engineers to confirm that shaft dimensions, terminal box orientations, and regional certifications (including ATEX, IECEx, CSA, and INMETRO) align with local plant specifications prior to delivery.
Get in touch with Shaanxi Nanfang Motor Technology for custom winding configurations, dimensional adjustments, and certified test reports.
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