Engineered for global standards, certified for extreme conditions, and built with industry-leading precision
Shaanxi Nanfang Motor Technology Co., Ltd serves as the authorized global distributor of Wolong Electric Drive Group Co., Ltd. Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has advanced into a premier global pioneer in advanced electric motor manufacturing and automation solutions.
With over three decades of dynamic technological evolution, Wolong operates 3 global manufacturing bases, 39 digitalized smart factories, and 3 global R&D centers. By structuring its operational core around absolute precision, high energy efficiency, and strict regulatory compliance, Wolong maintains an unrivaled leadership profile in driving technology across multiple international industrial markets.
Learn More About UsPioneering electric motor technology designed to address complex operational requirements and international standards
Designed strictly for volatile, explosive, and high-risk environments. Fully compliant with international Ex standards to ensure seamless regulatory clearance in global safety jurisdictions.
Offering permanent magnet and induction configurations meeting IE3, IE4, and advanced IE5 standards. Substantially reduces carbon footprint and overall operational lifecycle costs (TCO).
Providing an extensive selection of low-voltage, high-voltage, and specialized application motors. Tailored solutions engineered to meet the unique demands of process and mechanical systems.
Leveraging deep industrial legacy, global co-development, and unparalleled technological foundations
Wolong operates world-class motor drive and control R&D centers across Europe, Japan, and China, with its central research hub in Shanghai. These facilities spearhead next-generation electromagnetic design and digital integration, keeping products at the forefront of global efficiency trends.
Wolong's portfolio encompasses renowned century-old brands, including Brook Crompton, Morley, Laurence Scott, Schorch, and ATB, along with market leaders like Nanyang Explosion (CNE). This heritage ensures deep application expertise in oil & gas, mining, and power generation.
Our explosion-proof motors are certified by leading global classification bodies including ATEX, IECEx, and EAC. They are engineered to provide maximum reliability, containment, and structural integrity in hazardous coal mines, refineries, and chemical process facilities.
Unifying elite industrial motor manufacturers to deliver a comprehensive, end-to-end drive solution portfolio
In 2011, Wolong acquired a 97.94% controlling stake in the Austrian ATB Group, positioned as one of Europe's top three electric motor manufacturers. This acquisition brought renowned specialized brands under Wolong's umbrella, including Morley (with over 130 years of underground coal mining heritage) and Laurence Scott (widely recognized for engineering low starting current systems and critical nuclear power station drives).
Under Wolong's management, these brands have expanded their capabilities. Morley remains a benchmark for safety in harsh mining environments, while Laurence Scott continues to supply robust equipment, securing recognition for its technical standards.
Brook Crompton joined the Wolong Group, bringing over a century of electric motor design expertise. Known for developing energy-efficient systems, Brook Crompton has advanced industrial standards with its classic "W" and "10" series.
Integrated within Wolong's global production ecosystem, Brook Crompton provides a broad portfolio of low, medium, and high-voltage AC motors. These are complemented by speed drive packages that optimize energy efficiency and reliability for demanding industrial applications.
Established in Germany in 1882, Schorch joined Wolong in 2011. The company specializes in heavy-duty drive systems designed for critical infrastructure.
Schorch systems are widely used in chemical plants, oil and gas pipelines, municipal water treatment systems, marine drives, and metal processing facilities, meeting demanding specifications for high power output and reliability.
In 1999, Wolong established a joint venture with OLI, a leading brand in the global vibration motor sector. This partnership expanded Wolong's reach into material processing, dry-mix systems, and vibration-sensitive industrial operations.
Integrating OLI's specialized vibration technology with Wolong's manufacturing capability has yielded a range of heavy-duty MVE vibration motors and high-precision monitoring sensors, ensuring reliable performance in harsh operating environments.
In 2015, China's largest research and production base for explosion-proof motors, Nanyang Explosion Group (CNE), integrated into Wolong. This consolidated our capability in designing low and high-voltage flameproof, positive-pressure, and increased-safety motors.
In 2018, Wolong entered into a strategic partnership with General Electric's (GE) industrial motor division, integrating GE's engineering design and manufacturing methodologies. This partnership has strengthened our ability to support heavy industries, including petrochemical processing, power generation, and mining.
Equipped with state-of-the-art automated production machinery and digital quality-assurance systems
Wolong's engineering roadmap centers on decarbonization, high-efficiency drivetrains, and IoT integration. By developing IE5 ultra-premium efficiency motors and integrating variable frequency drives (VFD), we help industrial operators minimize energy consumption and control operating costs.
Our digital manufacturing framework features a robust material supply chain and automated production. We source high-grade electrical steel sheet and high-purity copper directly from approved suppliers, maintaining quality control from raw materials to final dyno testing.
Through our central research institute, we implement predictive maintenance capabilities. Using integrated thermal and vibration sensors, our systems provide real-time diagnostics, enabling plant operators to maximize uptime and prevent unplanned outages.
A detailed view of our standard mechanical components, designed for long-term operational durability
Our rotors feature a robust squirrel-cage design. Cast aluminum rotors are produced using centrifugal and high-pressure die-casting processes, creating a single-piece component that integrates rotor bars and end rings. For large-capacity and high-speed applications, we utilize premium copper bar rotors with TIG-welded end rings, ensuring reliable high-speed operation and stable starting torque characteristics.
Stator coils are insulated with high-mica tape and glass cloth backing. The assembled stator core undergoes our Vacuum Pressure Impregnation (VPI) process to yield a void-free structure. This insulation design delivers high electrical breakdown strength, mechanical resistance to thermal cycling, and protection against moisture and airborne contaminants.
The motor frames are developed using structural and fluid dynamics simulation tools. Manufactured from high-strength cast iron or structural steel, they provide high rigidity, effective thermal dissipation, and structural resonance margin. This robust design minimizes vibration levels and accommodates external mechanical shock loads in severe operating environments.
Designed for optimized aerodynamics, the fan hood system features integrated air guides, safety screens, and internal acoustic absorption elements. The side-entry air intake configuration reduces back-pressure and flow noise. The assembly provides protection rating up to IP22/IP55, protecting the fan from external objects while maintaining adequate cooling air flow.
Wolong motors supply mechanical drives across major worldwide process industries and infrastructure projects
With 39 manufacturing facilities and 4 global R&D centers distributed across China, Vietnam, the United Kingdom, Germany, Austria, Italy, Serbia, Mexico, and India, Wolong supports regional customers with localized engineering and service capabilities.
Our electric motors drive critical equipment including process fans, centrifugal water pumps, reciprocating compressors, conveyors, and heavy industrial machinery.
Key application areas include oil & gas production, petrochemical processing, coal mining, metal production, power generation, marine propulsion, HVAC systems, and industrial automation. We focus on providing high-efficiency solutions tailored to demanding operating conditions.
ATEX/IECEx certified motors for pipeline pumps, compressors, and refining platforms.
High-torque, robust flameproof motors for coal shearers and conveyor belts.
High-voltage synchronous condensers and cooling tower fan drives.
High-efficiency PM motors designed for marine electric propulsion.
Wolong motors comply with international quality and safety standards to support global market access
Nemko / ATEX
CSA
CE
CCC
SABS
TESTSAFE
Our production facilities comply with ISO 9001 and specific explosion-proof quality system requirements, establishing tracebility from initial casting to final factory acceptance tests.
Low-voltage motors are certified to NEMA standards, including UL and CSA, verifying torque characteristics, starting currents, and temperature rise metrics.
Motors designed for hazardous areas carry ATEX and IECEx certifications, meeting the safety directives required for explosive gas and dust environments in Europe and international markets.
TESTSAFE certifications verify that our mining motor range meets Australian safety standards, facilitating deployment in underground coal mines and material processing plants.
Engineering insights regarding explosion protection, efficiency standards, and installation specifications
ATEX is a mandatory European Union directive (2014/34/EU) that covers both electrical and non-electrical equipment in explosive atmospheres, requiring CE marking. IECEx is an international certification scheme based on IEC standards, focused specifically on electrical equipment in explosive atmospheres. While ATEX is legally required within the EU, IECEx is widely accepted globally to simplify local safety approvals.
The VPI process places the wound stator core under a vacuum to extract air and moisture from the insulation tape layers. High-solids resin is then introduced under pressure to fill all internal voids. Subsequent oven-curing creates a consolidated insulation structure that improves thermal dissipation, limits mechanical vibration wear, and protects the winding against moisture and corrosive chemical ingress.
PMSM designs utilize high-energy permanent magnets in the rotor, eliminating rotor copper losses and slip. This yields higher efficiency ratings (meeting or exceeding IE5) and improved power factor characteristics compared to standard induction motors, particularly under partial load conditions. The resulting lower operating temperatures help extend bearing and insulation life.
Ex p motors maintain an internal pressure of protective gas (air or inert gas) higher than the surrounding atmosphere. This overpressure prevents ambient flammable gases or dust from entering the motor enclosure. The system includes integrated monitoring control units to manage purging cycles before startup and initiate automatic shutdowns or alarms if internal pressure falls below safety thresholds.
The motor frame uses cast iron or steel structures configured with optimized cooling fins to maximize surface area for heat dissipation. Using finite element analysis (FEA), internal stiffeners are located to shift structural natural frequencies away from magnetic and rotational excitation frequencies. This design approach reduces operational vibration levels, protecting internal bearing assemblies.
Providing compliant and reliable mechanical drive solutions for international industrial operations
NANFANG
