Premium industrial electric motors engineered under international standards (NEMA/IEC) with multi-zone hazardous certifications.
Shaanxi Nanfang Motor Technology Co., Ltd is the authorized global distributor of Wolong. Wolong Electric Drive Group Co., Ltd was founded in 1984 and successfully listed on the Shanghai Stock Exchange in 2002 (code SH600580). Over more than three decades of intensive technological evolution, Wolong has expanded its footprint globally, managing 3 key manufacturing bases, 39 international factories, and 3 global R&D centers.
Focusing fundamentally on electric motors and drive control systems, Wolong integrates advanced R&D and digital manufacturing technologies. Our collaborative strategy ensures customers receive the highest standards in process control, explosion protection, and high-efficiency power transmission.
Explore Industrial CapabilityDeploying rugged three-phase squirrel cage designs to empower the world's most demanding physical environments.
Operating in environments containing explosive gas mixtures requires stringent safety classifications. Our motors feature robust flameproof envelopes (Ex d, Ex de) that prevent the propagation of internal ignitions to the external atmosphere. Utilizing high-strength structural enclosures, these systems are ideally certified for chemical refiners, upstream drilling setups, and natural gas transport terminals.
Conveyor belts, rock drills, and exhaust fans in underground mines demand high starting torques and resilient containment frameworks. With heritage systems like Morley integrated into our manufacturing processes, we build flameproof three-phase induction motors that handle extreme shock, dust infiltration, and transient mechanical overload.
Municipal plants and heavy manufacturing complexes depend on high-efficiency pumps that run continuously. By deploying Wolong YBRB series flameproof water pump motors, utility operators drastically minimize power waste. These machines ensure extended bearing lifetimes, exceptional insulation resilience (Class F/H), and structural resistance to fluid surges.
Today's heavy industry is driven by strict emission limits, localized safety mandates, and structural shift toward digitalization. Under the IE3, IE4, and IE5 directives, standard industrial facilities are replacing outdated gear with ultra-efficient, variable-frequency three-phase asynchronous motors. By sourcing from China’s leading industrial consortiums, international procurement managers reduce capital expenditure while maintaining compliance with EU (ATEX/CE), North American (NEMA/CSA/UL), and Australian (TESTSAFE) frameworks.
The union of century-old industrial heritage and modern manufacturing processes to form a world-class electric motor powerhouse.
Wolong has established dedicated motor and drive control R&D centers in China, Europe, and Japan. Centered in Shanghai, our central research institute conducts advanced studies in electrical engineering, multi-physics magnetic field mapping, and structural fluid dynamics. This extensive R&D network ensures our premium explosion-proof and standard industrial induction motors deliver high operational efficiencies, excellent heat dissipation, and low vibration profiles.
In 2011, Wolong acquired 97.94% of the Austrian ATB Group, one of the three major European motor manufacturers. This acquisition integrated ATB's century-long design expertise into our global production ecosystem, including Morley and Laurence Scott.
With nearly 130 years of history, Morley is highly regarded in the underground coal market, synonymous with reliability and robust design. Laurence Scott pioneered motor supply for British nuclear power plants and navy vessels, specializing in low starting current generators. Following the acquisition, Laurence Scott was honored with the Queen's Award for three consecutive years.
Brook Crompton brings over a century of electric motor expertise to the Wolong group, specializing in energy-efficient low, medium, and high-voltage AC motors. This includes the premium Brook Crompton 'W' and '10' series, designed for harsh operating environments.
Schorch Electric Motors (est. 1882) joined Wolong in 2011, supplying driving systems for oil and gas, chemical processing, water management, and power generation. In vibration technology, the OLI brand holds the largest global market share for industrial vibration motors and sensors.
In 2015, CNE (Wolong Electric Nanyang Explosion-Proof Group Co., Ltd.), China's largest explosion-proof motor research and manufacturing base, joined Wolong. In 2018, General Electric (GE) Industrial Motors joined our alliance, expanding our technical capabilities in heavy industries like mining, paper, and materials processing.
Deconstructing the structural components that ensure thermal stability, efficiency, and explosion safety.
The rotor features the squirrel cage design, with cast aluminum rotors being widely utilized. These rotors are produced using either centrifugal aluminum casting or die-casting techniques, where molten pure aluminum is poured into the slots of the rotor core, resulting in a single-piece construction that integrates the rotor bars and end rings. The structural integrity and manufacturing process of cast aluminum rotors guarantee the motor rotor's reliability, and also endow the motor with outstanding torque properties. For larger capacity motors, copper bar rotors are employed, which benefit from dependable bar securing and end ring welding procedures. Additionally, the protective ring design of high-speed motors further ensures the reliable operation of the copper bar rotor.
The coil is crafted from polyester film and reinforced with glass cloth, utilizing either low-powder mica tape with a high mica content or medium-powdered mica tape with an abundance of mica. Following the VPI (Vacuum Pressure Impregnation) process, a pristine white coil emerges from the production line. After the billet is extracted from the wire, it proceeds through the VPI process to transform into a finished unit. The winding and insulation are meticulously engineered to provide exceptional electrical performance, mechanical strength, resistance to moisture, and thermal stability.
The motor frame employs a fully digital platform for structural and fluid multi-physics field simulations. This simulation platform retains the original patent's structure and design, utilizing mature, high-strength cast iron (or steel as an alternative). The frame boasts exceptional structural redundancy, outstanding heat dissipation properties, and ample inherent frequency isolation margins for the entire machine. It is engineered to endure significant mechanical shocks, maintain a superior vibration level, and ensure a lower temperature increase in the motor.
The low-noise fan cover system comprises a fan cover body, an air guide cylinder, a protective window, and a silencer plate. Its compact structure and lightweight design facilitate vibration reduction. The air inlet is situated on the side, which optimizes the avoidance of obstacles behind the motor, minimizing adverse effects on ventilation and reducing noise caused by energy loss during propagation path changes. The system also incorporates sound-absorbing materials that absorb noise, thereby lowering the overall motor noise. Additionally, the fan cover is rated IP22, ensuring that hands cannot come into contact with the fan.
Certified global market access. Wolong motors are engineered to pass the world's most rigorous performance and safety assessments.
Adhering to a comprehensive marketing and engineering strategy across the entire electric motor value chain, Wolong has secured international product certifications. These certifications enable our equipment to operate seamlessly in critical global applications while conforming to local regional mandates.
Nemko / ATEX
CSA Standard
CE Conformity
CCC Mark
SABS South Africa
TESTSAFE Australia
Wolong is an ISO 9001-certified motor manufacturer. Implementing strict quality management protocols reduces production variances, optimizes assembly line efficiency, and ensures reliable performance for every manufactured batch.
To confirm that our electric motors meet NEMA's mechanical performance specifications, we conduct thorough testing. This includes efficiency testing, insulation resistance testing, starting current and torque tests, durability testing, and vibration analysis. For low-voltage motors, Wolong has acquired UL and CSA certificates.
For high-voltage, low-voltage, and explosion-proof motors, we hold full IECEx and ATEX certificates to simplify exportation to the EU. Additionally, acquiring Testsafe opens direct channels for coal mining motors into Australia, establishing a solid foundation for Wolong equipment in international markets.
Ensuring reliable performance and localized support across key industrial markets worldwide.
In Southeast Asia's growing industrial zones, our motors power textile machinery, municipal water facilities, and chemical processing setups. Distributed local warehousing and support centers simplify procurement, commissioning, and on-site maintenance.
Operating through European divisions like Schorch and ATB, we provide standard IEC-compliant motors, prompt replacement parts, and engineering consultation. This helps European industrial operators minimize downtime and maintain compliance with local regulations.
By combining GE Industrial Motors' brand heritage with Wolong's manufacturing capability, we provide North and South American oilfields, refineries, and mining sites with reliable, energy-efficient NEMA-certified motors.
Driving the next generation of electric machinery with focus on efficiency, smart diagnostics, and material optimization.
Wolong is shifting its motor engineering to IE5 ultra-premium efficiency standards. Combining permanent magnet assistance with the reliability of induction squirrel cage designs helps reduce carbon footprints and energy consumption in heavy industries.
Our future drive systems feature integrated vibration sensors, thermal probes, and acoustic analysis modules. These components enable predictive maintenance, helping plant managers prevent downtime by addressing wear and tear before failure occurs.
To support high-torque, variable-speed applications, our motors are built with specialized stator insulation. This insulation prevents voltage spikes and partial discharge failures, ensuring long-term reliability under VFD operation.
By utilizing high-grade electromagnetic steel laminations and structural design simulations, we have reduced overall frame weights without compromising casing strength. This design optimizes ventilation, reduces operating noise, and extends bearing lifetimes.
Quick answers to common questions about our 3-phase squirrel cage motors, standard options, and global services.
Cast aluminum rotors are widely used for general-purpose applications due to their reliable structure, cost-effectiveness, and excellent torque properties, which are achieved through centrifugal casting. High-capacity or high-speed motors utilize copper bar rotors with welded end rings to handle greater thermal and centrifugal stress.
Our motors are tested to conform to ATEX, IECEx, and China GB standards. The structural flameproof enclosures (such as Ex d or Ex de) are engineered and tested to prevent internal ignitions from propagating to hazardous external gases or coal dust.
Yes, models such as the WEBP3 and BPY-S30 series are specifically designed for variable speed regulation. They feature high-performance insulation (Class F or H) and vacuum pressure impregnation (VPI) to withstand transient voltage spikes from modern inverters.
We provide full coverage for both NEMA standards (common in North America, certified by UL/CSA) and IEC standards (common in Europe and other regions, certified by CE/Nemko). This includes specialized certifications like SABS for South Africa and TESTSAFE for Australia.
Through systematic brand acquisitions (ATB in 2011, Brook Crompton, Schorch, Nanyang/CNE in 2015, and GE Industrial Motors' business in 2018), Wolong integrated these companies' technical expertise and manufacturing networks into a single global production ecosystem.
Rugged drive solutions for heavy conveyors, water pumps, gas compressors, and hazardous-area ventilation systems.
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