Engineered to deliver exceptional torque efficiency and explosion-proof safety under high-stress operating environments worldwide.
Shaanxi Nanfang Motor Technology Co., Ltd. is the designated authorized global distributor of Wolong Electric Drive Group Co., Ltd. Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (stock code: SH600580), Wolong has advanced to become a premier designer and manufacturer of electric drive systems, serving industrial projects across the globe.
With decades of focused engineering, Wolong operates a massive global industrial footprint consisting of 3 main manufacturing bases, 39 advanced factories, and 3 state-of-the-art R&D centers. By prioritizing localized service alongside specialized custom engineering, we deliver robust solutions across various heavy industries, including oil and gas, petrochemicals, mining, marine engineering, and infrastructure utilities.
Our industrial electric drive solutions balance high power density with strict compliance standards, helping you minimize total cost of ownership (TCO).
We engineer explosion-proof (Ex-d, Ex-e, Ex-p) motors for hazardous areas. Certified by international testing agencies (Nemko, CSA, TestSafe, EAC), these systems operate safely in oil refineries, offshore rigs, and deep coal mines.
Our premium three-phase permanent magnet synchronous motors (PMSM) and low-voltage asynchronous induction systems reduce energy losses. We offer options designed to meet and exceed international energy class regulations.
Our portfolio covers low, medium, and high voltage platforms ranging up to thousands of kilowatts. This includes custom marine motors with DNV Type Approval, heavy-duty tunnel boring machine systems, and custom variable frequency mine motors.
Combining legacy European engineering with advanced manufacturing scale to support multi-regional projects.
Wolong operates motor and drive control R&D centers in China, Europe, and Japan, complemented by a central research institute in Shanghai. These facilities focus on drive control algorithms, magnetic circuit optimizations, and thermal management.
Wolong manages a portfolio of established industrial motor brands. This includes Nanyang Explosion-Proof (CNE), Brook Crompton, Morley, Laurence Scott, Schorch, ATB, and OLI vibration systems, bringing decades of specialized engineering experience to our customers.
Our explosion-proof motors are designed to operate safely in challenging industrial atmospheres, backed by national and international certifications (ATEX, IECEx, CU-TR, SABS, TestSafe, and others).
How Wolong brought together century-old industrial brands to form a versatile global electric drive enterprise.
In 2011, Wolong acquired 97.94% of the Austrian ATB Group. This acquisition integrated two historic brands: Morley and Laurence Scott. Morley is known for its underground coal mining motors, while Laurence Scott is recognized for low starting-current designs used in nuclear power stations and marine vessels.
Brook Crompton brings over 110 years of electric motor design expertise to the group. Known for developing energy-efficient designs, Brook Crompton has contributed to our complete line of low, medium, and high-voltage AC motors, including the "W" and "10" series for harsh industrial environments.
Founded in Germany in 1882, Schorch specializes in custom drive systems for sectors like petrochemicals, municipal water management, and heavy tunnel extraction. Additionally, our partnership with OLI vibration motors provides specialized drive technologies for global material processing industries.
In 2015, Nanyang Explosion-Proof Group (CNE), one of China's largest developers of explosion-proof motors, integrated with Wolong. In 2018, Wolong acquired General Electric's (GE) commercial and industrial motor division, incorporating GE's medium and high-voltage design standards into our global product line.
A detailed look at the core components that help our motors withstand continuous mechanical stress, high temperatures, and electrical loads.
Our rotors use a robust squirrel-cage configuration. For low-to-medium power outputs, we utilize centrifugal and high-pressure die-cast pure aluminum rotors. This one-piece design integrates rotor bars and end-rings, ensuring mechanical reliability and balanced startup torque profiles.
For larger high-voltage motors, we use fabricated copper bar rotors. Copper bars are joined to the end rings using high-frequency induction silver-alloy welding, and high-speed designs feature retaining rings to manage centrifugal forces during operation.
Our stator windings use high-grade copper conductors insulated with polyester film, glass-fiber wrapping, and high-mica-content tapes. The complete stator core undergoes a computerized Vacuum Pressure Impregnation (VPI) process using solvent-free epoxy resins.
This thermal-curing process creates a void-free insulation block. The resulting assembly offers high dielectric strength, moisture resistance, heat dissipation, and the mechanical rigidity needed to withstand vibration during heavy start-up cycles.
We use multi-physics simulation software (CFD and FEA) to design our motor frames. These frames are manufactured from high-tensile cast iron or fabricated structural steel to provide the rigidity needed for demanding industrial environments.
The external cooling fins are optimized to maximize surface area contact with cooling air currents. This design reduces thermal hot spots, limits mechanical resonance, and maintains low vibration levels during high-load operations.
Our ventilation system includes an aerodynamic fan, air guide cylinders, protective screens, and acoustic silencer plates. The air inlets are positioned to maintain airflow even when space behind the motor is restricted.
We use sound-absorbing materials to reduce high-frequency wind noise. With an IP22 design, the fan hood protects personnel from moving parts while maintaining the cooling performance needed for continuous duty cycles.
Our electric motors are built to international standards, simplifying compliance and installation across multiple jurisdictions.
To help our clients enter international markets smoothly, Wolong certifies its manufacturing facilities and products under multiple regulatory frameworks:
Manufacturing large electric motors requires reliable access to raw materials and precision components. Our factories in China benefit from integrated local supply chains, providing steady access to high-grade silicon steel sheets, copper windings, and heavy-duty casting facilities.
This regional integration helps us maintain consistent material quality and manage lead times, allowing us to supply large-scale infrastructure projects efficiently.
Large industrial buyers look for more than just raw horsepower. Key procurement criteria include long-term reliability (MTBF), grid compatibility, low vibration levels, and compliance with local safety standards.
We support engineering, procurement, and construction (EPC) projects by providing detailed documentation, including thermal cycle reports, shaft loading data, and customized mounting options to simplify field retrofitting.
Wolong operates 39 factories and 4 regional research centers worldwide, helping us provide localized support. We assist our clients with on-site commissioning, alignment, and diagnostic testing.
Our global service network helps you maintain operational uptime by providing factory-trained service technicians and genuine spare parts when needed.
Our electric motors are designed to drive critical processes in demanding industrial applications.
We supply positive pressure and flameproof motors to drive compressors, crude transfer pumps, and cooling fans in petrochemical plants, refineries, and offshore platforms. Our designs are certified to withstand corrosive, salt-laden marine air.
Designed for heavy machinery like coal shearers, tunnel boring machines (TBMs), conveyor drives, and ventilation fans. These motors feature robust steel and cast-iron frames to handle the dust, impact, and load variations of underground mining.
With DNV Type Approval, our low and high-voltage marine motors are designed for onboard pumps, thrusters, and deck machinery, offering reliable starting performance and corrosion resistance in marine environments.
Common questions from procurement managers and engineers regarding specifications, sourcing, and certifications.
We offer customized designs and high-output electrical machinery built to handle demanding industrial loads.
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