High-efficiency, explosion-proof motors and grid solutions engineered to exceed modern international safety and efficiency standards.
Shaanxi Nanfang Motor Technology Co., Ltd. is the premium authorized distributor of Wolong. Founded in 1984, Wolong Electric Drive Group Co., Ltd. achieved its successful public listing in 2002 (SH600580). For over three decades, the company has driven progress, cultivating a colossal global presence.
With 3 global manufacturing bases, 39 advanced factories, and 3 global R&D centers, Wolong stands as a world leader in motor manufacturing and control system development. By prioritizing a globally unified brand strategy, Wolong delivers cutting-edge technology, process innovation, and seamless distribution across major markets.
Through strategic mergers and integrations, the Wolong ecosystem has united several of the world's most historically significant motor manufacturers—including Brook Crompton, ATB, Morley, Laurence Scott, Schorch, OLI, Nanyang Explosion-Proof (CNE), and the commercial and industrial motor division of General Electric (GE). This synergy provides international procurement teams with unparalleled technical breadth and standard compliance.
Discover how Chinese manufacturing excellence combined with European engineering patents yields high-performance, cost-effective industrial motors.
Wolong has established advanced motor and drive control R&D centers in China, Europe, and Japan, complemented by a central research institute in Shanghai. By integrating global expertise, the group designs high-efficiency systems that meet international benchmarks, placing many of its flagship products at the very forefront of the global industry.
Wolong's portfolio encompasses leading domestic industry standard-setters like Nanyang Explosion-Proof, alongside century-old global legends including Brook Crompton, Morley, Laurence Scott, Schorch, and ATB. This brings unparalleled prestige and validation in highly critical sectors like oil & gas, chemical processing, and mining.
As a global authority in explosion-proof motors, Wolong guarantees outstanding safety, durability, and operational redundancy. Widely utilized in hazardous coal mines, refineries, and chemical plants, these motors carry full international certification, including ATEX, IECEx, CU-TR (EAC), and TestSafe.
By leveraging the localized supply chain advantages of China, the production of Brook Crompton motors has achieved significant efficiencies without sacrificing the technical excellence built over a century of British engineering. China-based facilities integrate advanced automation, strict quality control protocols, and raw material access (such as premium electrical steel laminations and high-purity copper) that optimize manufacturing speed and thermal management.
Furthermore, our manufacturing bases operate under the standardized global quality system of Wolong, combining localized production agility with international design oversight. This allows us to export premium-grade low-voltage, medium-voltage, and high-voltage AC motors globally, ensuring full technical compliance with localized grid conditions and site requirements.
The electric motor industry is undergoing a structural shift driven by international energy mandates and the rapid adoption of Industrial Internet of Things (IIoT) frameworks. Super-efficient motors rating at IE4 and IE5 levels, alongside permanent magnet technologies, have transitioned from premium options to regulatory baselines. Minimizing total lifecycle energy losses in heavy industry is now essential.
Simultaneously, predictive maintenance and real-time monitoring have become critical for process industries. Our latest explosion-proof motors are designed to support Ex-certified vibration sensors and temperature probes, allowing operators in petrochemical or mining sectors to detect insulation degradation, bearing wear, or cooling path blockages before catastrophic downtime occurs.
Large-scale industrial projects demand holistic electrical and mechanical integration. Rather than operating as isolated components, modern AC motors function within complete drive systems, frequently paired with variable frequency drives (VFDs) and power-factor correction units. Shaanxi Nanfang Motor offers complete engineering solutions, including Distributed Synchronous Condenser Systems to stabilize grids experiencing high renewable energy penetration, preventing frequency collapse and voltage fluctuations.
In deep mining operations, our motors drive ultra-heavy, high-torque armored face conveyors, where start-stop operations under load test the limits of rotor cage design. In marine environments, we provide generator and auxiliary motor sets compliant with Lloyd's Register and BV, safeguarding propulsion systems in highly saline and humid atmospheres.
The history of global brands that have unified under Wolong to create an elite industrial drive alliance.
In 2011, WOLONG obtained strong technical and technological support by successfully acquiring 97.94% of the Austrian ATB Group (ATB motor), one of the three major European motor manufacturers. This established WOLONG as a high-strength global motor supplier.
The ATB Group includes highly specialized brands like Morley in the mining sector and Laurence Scott. Morley brings nearly 130 years of underground coal mining expertise, becoming synonymous with explosion-proof safety and durability. Laurence Scott stands as a pioneer in manufacturing low-starting-current motors for British nuclear power facilities and generators for naval vessels, receiving the Queen's Award for three consecutive years post-acquisition.
Brook Crompton Motors subsequently integrated into the Wolong Group, bringing over a century of electric motor design mastery. Brook Crompton is recognized for developing energy-efficient motor designs, including the premium "W" and "10" series suitable for hazardous and harsh industrial settings.
In parallel, Schorch, founded in 1882, joined the group in 2011. Schorch supplies advanced driving systems to global projects across petrochemicals, steel, tunnel ventilation, and municipal water treatment. For specialized vibration requirements, the group incorporates OLI Brand, a global leader in MVE vibration motors and Ex-certified vibration sensors, establishing a joint venture in China in 1999.
In 2015, WOLONG Electric Nanyang Explosion-Proof Group Co., Ltd. (CNE), China's largest scientific research and manufacturing base for explosion-proof motors, integrated into the group. This strategic consolidation expanded the group's capacity in high-voltage explosion-proof and positive-pressure shell motors for oil, chemical, metallurgical, and nuclear industries.
In 2018, the commercial and industrial motor division of General Electric (GE) was acquired. As an established pioneer of heavy-duty industrial electric drives, GE's integration bolstered Wolong's support for petrochemicals, mining, paper manufacturing, cement, and water treatment utilities, completing a truly global engineering ecosystem.
A detailed look at the premium component construction and simulation-driven design behind every motor.
Our rotors feature a robust squirrel cage design, utilizing cast aluminum structures produced through high-pressure centrifugal casting or precision die-casting. This process results in a single-piece construction that integrates the rotor bars and end rings, ensuring mechanical integrity and high starting torque.
For high-capacity or variable-frequency motors, copper bar rotors are used, secured with heavy-duty end ring welding procedures. High-speed motors feature alloy protective rings to stabilize the copper bars under high centrifugal forces.
Stator coils are wrapped in polyester film and reinforced with premium glass-cloth-backed mica tape. Following insertion, the entire stator undergoes our rigorous Vacuum Pressure Impregnation (VPI) process.
This thermal-hardening resin treatment eliminates air voids, sealing the stator against dust and moisture while improving dielectric strength and heat dissipation. The result is a highly reliable insulation system designed for harsh environments.
Motor frames are engineered using digital platforms for structural and fluid multi-physics simulation. Built from high-strength cast iron or structural steel, they feature generous safety margins and optimized cooling rib configurations.
The frames are designed to absorb external mechanical shocks, minimize vibration transmission, and provide structural stability under high torque loads.
The cooling system includes an optimized fan cover, an air guide cylinder, protective windows, and integrated silencer plates. The side-entry air design avoids obstruction behind the motor, reducing aerodynamic turbulence.
By incorporating sound-absorbing materials, the design minimizes noise from airflow. The protective shroud meets IP22 standards to prevent accidental contact with the rotating fan.
Verified compliance for global engineering procurement and cross-border installation.
Wolong manufacturing facilities operate under strict ISO 9001 quality management systems. From raw material inspection to final dynamic load testing, every process is documented and audited, meeting international quality expectations.
For North American industrial projects, our motors undergo compliance testing to meet NEMA mechanical and electrical requirements, holding official UL and CSA certification for low-voltage industrial installations.
Explosion-proof motors comply with ATEX and IECEx safety directives for explosive atmospheres. The acquisition of TestSafe certification facilitates the export of heavy mining equipment to Australia and Oceania.
Nemko / ATEX
CSA
CE
CCC
SABS
TESTSAFE
Answers to common technical, regulatory, and supply chain inquiries from engineering procurement managers.
Wolong operates under a unified Quality Assurance Framework across its global manufacturing centers. Legacy technical designs and patents are preserved, and critical structural elements continue to be simulated and verified using localized digital engineering centers. Manufacturing plants undergo external quality audits to maintain their respective European (ATEX/CE), American (UL/CSA/NEMA), and global certifications.
Standard high-voltage AC motors (such as the YR or YBXKK series) have a typical manufacturing lead time of 8 to 14 weeks, depending on frame size, winding customization, and verification testing. Large-scale custom projects, including positive pressure shell motors, are scheduled through our engineering queue and project management teams.
We supply motors certified for Zone 1, Zone 2, Zone 21, and Zone 22 hazardous environments. Our protection concepts include flameproof (Ex d / Ex db), increased safety (Ex e / Ex eb), non-sparking (Ex nA / Ex ec), dust ignition protection (Ex t), and positive pressure purging (Ex p / Ex pxb / Ex pyb), conforming to ATEX, IECEx, and China Ex certification standards.
Yes. We offer marine-duty options featuring specialized C5-M epoxy coating systems, corrosion-resistant internal hardware, and moisture condensation prevention heaters. Stators receive additional dip varnishing coats to protect against salt air, meeting international marine classification standards.
VPI replaces traditional varnish dipping by drawing a deep vacuum to extract air and moisture from the stator coils, followed by pressurized epoxy injection. This ensures complete coverage, eliminates internal air pockets, and improves heat transfer, mechanical stability, and chemical resistance.
Wolong holds formal TestSafe certifications, permitting the direct entry of explosion-proof coal mine and industrial machinery into Australian jurisdictions. This compliance framework simplifies local licensing, risk assessments, and integration with Australian machinery packages.
Explore our specialized motor solutions designed for chemical fans, variable frequency drives, dust-safety environments, and high-temperature operations.
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