Shaanxi Nanfang Motor Technology Co., Ltd stands as the premier authorized distributor of Wolong Electric Drive Group Co., Ltd. Established in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has advanced to become an undisputed global titan in motor and control system manufacturing.
With a massive footprint including 3 main manufacturing bases, 39 state-of-the-art factories, and 3 global R&D centers, Wolong serves critical sectors globally. Our engineering strategy targets technical superiority in heavy duty environments, ensuring our industrial partners secure maximum operational resilience.
Learn More About Our CapabilitiesGlobal industrial supply chains are transitioning towards strict environmental targets. The integration of high-efficiency motors rated at IE4 and IE5 levels reduces grid strain and aids global commercial sectors in cutting carbon expenditures by up to 20-30% on industrial machinery drives.
Enterprises require heavy machinery manufacturers to adapt quickly to diverse regional electrical grids (such as NEMA standard configurations in North America versus IEC parameters in Europe). Integrated global manufacturing ensures high customization capacity with shortened delivery cycles.
By leveraging digital twin design paradigms and real-time physical simulation, modern motor factories minimize manufacturing tolerances. High-speed multi-physics optimization limits core thermal expansion, leading to longer machinery lifetimes under severe variable load applications.
Engineered for hazardous locations, providing explosion-proof verification for oil, petrochemical, and deep-vein coal mining installations globally.
We provide IE3, IE4, and advanced IE5 options, alongside permanent magnet solutions, reducing thermal losses and minimizing operational footprint.
Extensive product range, spanning low-voltage asynchronous options up to massive multi-megawatt high-voltage synchronous generators for industrial utilities.
Wolong operates localized motor and drive control technology centers in China, Europe, and Japan. Our dedicated Shanghai Central Research Institute works to advance electric drive science, pushing the efficiency limits of permanent magnet motors, heavy excitation high-voltage systems, and marine variable frequency controllers.
Our heavy-duty flameproof systems are built to withstand dangerous environments. Extensively applied in hydrocarbon extraction, chemical processing plants, and deep-pit extraction sites, our certified motors feature robust structural housings to safely contain internal ignition risks.
Through strategic growth, Wolong has incorporated iconic names in motor manufacturing: Nanyang Explosion-Proof Group, Brook Crompton, Morley, Laurence Scott, Schorch, ATB, and OLI. This brings together over a century of specialized engineering expertise, providing a robust portfolio for custom and demanding applications.
By systematically integrating historic industrial brands, Wolong has combined specialized engineering heritages with modern manufacturing capabilities.
Wolong acquired 97.94% of the Austrian ATB Group, gaining access to premier European engineering. This integrated both the specialized underground mining brand Morley and Laurence Scott, renowned for low starting currents and nuclear-grade equipment.
Established in 1882, Schorch joined the group, bringing high-quality driving systems for petrochemicals, offshore applications, and infrastructure projects.
Strategic integration of China's largest explosion-proof research and manufacturing base. Their high-voltage and low-voltage flameproof designs are key for severe-duty petrochemical environments.
Bringing over 100 years of experience in low, medium, and high voltage asynchronous designs, including the W and 10 series, optimized for adjustable speed drive packages.
Partnering with OLI vibration motors to support global projects with high-frequency shaker motors and specialized sensors.
Through strategic cooperation, GE's industrial motor business joined Wolong, expanding capabilities to support heavy industries like chemical refining, water treatment, and metallurgy.
Featuring a robust squirrel-cage design, our rotors are produced using centrifugal aluminum casting or high-precision die-casting. This creates a solid single-piece structure that integrates the rotor bars and end rings, delivering excellent starting and pull-out torque characteristics.
For high-capacity or high-speed applications, we utilize premium copper bar rotors. Secure bar bracing and specialized end-ring welding, along with carbon-fiber or non-magnetic retaining rings, protect the assembly during heavy duty cycles.
Our stator coils use high-grade copper wire wrapped in polyester film, reinforced with glass cloth, and insulated with high-mica tapes. The completed windings undergo a computerized Vacuum Pressure Impregnation (VPI) process.
This thorough VPI process removes air pockets and moisture, creating a solid, highly durable insulation system with excellent thermal stability, mechanical strength, and moisture resistance, easily handling high-frequency VSD harmonics.
Our motor frames are engineered using digital platforms for structural, thermal, and fluid multi-physics simulations, maintaining original patented designs and cast-iron or steel construction.
This simulation approach ensures ample structural margins and excellent heat dissipation, keeping motor temperature rise well below standard insulation class limits. This design isolates key structural resonant frequencies, minimizing vibration and wear on bearings.
Designed with a compact, lightweight structure, the cooling system features a fan cover, air guide cylinder, protective window, and silencer plate to help minimize vibrations.
The side-inlet design optimizes air flow and reduces noise from turbulence, while integrated sound-absorbing materials lower overall acoustic emissions. Rated IP22, the shroud prevents accidental contact with the fan blades.
Nanfang Motor provides products that comply with key international standards, facilitating integration into global industrial projects.
Nemko / ATEX
CSA
CE
CCC
SABS
TESTSAFE
We work to meet the varying requirements of projects across different countries, aligning with key standards of the global electric motor supply chain.
Used in high-risk zones globally, driving pumps and compressors where hydrocarbon gases require dependable flameproof motors.
Our systems, including the Morley brand line, are engineered for dusty, damp, and high-impact conditions, driving coal cutters and conveyors.
High-voltage vertical and horizontal motors power municipal pumping stations and storm-water drainage facilities, focusing on reliable continuous operation.
NEMA standard motors (typical in North America) specify dimensions in inches and focus on service factors that allow short-term overload operation. IEC motors use metric measurements and are generally designed with a service factor of 1.0, focusing on direct duty cycle efficiency classes (IE3, IE4, IE5).
Vacuum Pressure Impregnation (VPI) replaces air voids with resin, enhancing the dielectric strength of the stator coils. This improves thermal conductivity, helps prevent localized discharges, and protects windings in high-vibration applications.
Underground coal mining applications typically require ATEX Group I Category M1 or M2 certified motors, or IECEx Ex d I Mb ratings, indicating the design can withstand coal dust and methane environments.
PMSMs feature synchronous rotor speeds with minimal rotor losses, resulting in higher efficiency across a wider load range. They offer a compact design and high power density, making them suitable for variable-speed applications.
For motors paired with VFDs, we install insulated non-drive end bearings or grounding rings to divert high-frequency shaft currents safely to the frame, preventing electrical pitting on the bearing surfaces.
Our cooling systems undergo testing in ISO 3744-compliant acoustic chambers, verifying that sound pressure levels remain within standard industry limits, with IP22 ingress protection on the fan cover.
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