Explore our industrial-grade high and low-voltage electrical drive catalog, compliant with strict global requirements for mining, tunnel-boring, chemical operations, and mechanical system manufacturing.
Shaanxi Nanfang Motor Technology Co., Ltd. serves as the premier authorized distributor of Wolong. Founded in 1984, Wolong Electric Drive Group Co., Ltd. (listed on the Shanghai Stock Exchange, code SH600580) has built a solid reputation as a world-class manufacturing giant.
Wolong currently operates 3 global manufacturing bases, 39 advanced factories, and 3 global R&D centers. By integrating leading motor designs with drive and control software, Wolong offers optimized performance and low total cost of ownership across diverse markets.
Combining time-tested European heritage with modern production efficiency to provide standard-setting drive solutions.
Wolong maintains active motor and control system R&D centers across China, Europe, and Japan. The Shanghai Central Research Institute leads in electromagnetic optimization and variable frequency algorithm integration, pushing efficiency limits in industrial drive units.
Under Wolong, century-old brands such as Brook Crompton, Morley, Laurence Scott, Schorch, ATB, and OLI share technical designs and manufacturing standards. This integrated architecture serves chemical, oil, gas, and heavy mining industries worldwide.
With CNE (Nanyang Explosion-proof Group) inside the organization, Wolong produces robust flameproof and non-sparking motors. Our motors comply with international directives including ATEX, IECEx, and EAC, ensuring safe operation in Zone 1 and Zone 2 hazardous areas.
Every motor frame, cooling rib layout, and shaft bearing assembly undergoes mechanical, structural, and thermal multi-physics simulation. This design approach controls temperature rise and keeps vibration well below ISO limits.
How Wolong incorporated leading industrial names into a unified, high-performance manufacturing framework.
Wolong acquired 97.94% of the ATB Group, integrating historical brands such as Morley (with 130 years of history in underground coal mining machinery) and Laurence Scott (well-known for high-voltage, low-starting-current naval and nuclear plant motors).
Brook Crompton brought over a century of experience in developing premium efficiency low and medium voltage motors (W and 10 series). Schorch (established in 1882) joined Wolong in 2011, contributing advanced engineering in high-power drive systems for petrochemical and steel processing plants.
In 2015, Nanyang Explosion-proof Group (CNE) joined Wolong, strengthening capabilities in explosion-proof high-voltage and nuclear safety motors. In 2018, Wolong acquired the GE Commercial and Industrial motor division, securing access to large-scale heavy-duty process industry designs.
A detailed look at the materials, precision processes, and structural engineering behind Wolong motors.
Our rotors are engineered for stable torque characteristics and high durability. Standard models feature squirrel-cage designs utilizing centrifugal or pressure die-casting to integrate the rotor bars and end rings into a solid unit.
For high-power or high-vibration applications, we construct copper bar rotors with TIG-welded end rings. A protective retaining ring design is added to high-speed machines to prevent deformation under centrifugal stress.
Stator coils are wrapped with high-mica tape reinforced by polyester film and glass cloth, protecting against dielectric breakdown and moisture absorption.
The entire stator core assembly undergoes a Vacuum Pressure Impregnation (VPI) cycle with high-grade solventless epoxy resin. This process eliminates internal air voids, improves thermal conductivity, and locks the windings against electromagnetic vibration.
Constructed from high-tensile cast iron or fabricated structural steel, our motor frames are simulated using digital fluid and vibration platforms. This design minimizes resonance and helps isolate high-frequency shaft harmonics.
The external cooling fins are optimized to direct airflow evenly across the frame body, maintaining a uniform thermal profile and extending the service life of the internal grease and bearings.
The cooling system includes a dynamic fan hood, an internal air guide cylinder, protective screens, and structural silencer plates. It is designed to minimize acoustic energy loss along the propagation path.
Equipped with acoustic lining and rated up to IP22, this assembly reduces total operating noise by 3 to 6 dB(A) compared to conventional designs while keeping internal components protected.
Wolong motors comply with all major industrial safety, performance, and environmental standards worldwide.
Nemko / ATEX
CSA Standard
CE Certification
CCC Standard
SABS Approved
TESTSAFE
Our global engineering and compliance teams verify that each motor is configured to meet local safety, voltage, and environment-specific standards:
Leveraging scale, integrated supply chains, and advanced production lines to deliver globally competitive industrial motors.
Our plants benefit from access to localized raw materials, including high-grade silicon steel sheets, high-purity electrolytic copper windings, and advanced structural cast iron. This vertical integration helps stabilize pricing and shorten lead times.
Our production facilities utilize robotic stator winding systems, automated VPI processing bays, and high-precision CNC rotor turning machinery. Every factory operates a full-load test bed to verify efficiency, power factor, and thermal rise under load.
Combining Wolong's scale with local operational efficiencies allows us to offer premium, CE-certified energy-saving motors at competitive pricing. This helps global EPC contractors and system integrators manage project costs without compromising on safety or performance.
Meeting strict environmental regulations through advanced permanent magnet systems and variable speed drive technology.
Global energy policies are driving a shift away from standard induction motors toward premium efficiency classes (IE4 and IE5). Electric motor systems consume over 60% of all industrial electricity; transitioning to high-efficiency motors provides direct cost savings and supports corporate net-zero targets.
Our WEPM and TBVF series variable frequency PMSM motors utilize high-coercivity NdFeB magnets. By eliminating rotor copper losses, these motors maintain high efficiency even when operating at partial loads or variable speeds, helping operators lower their energy consumption.
Integrating these PM motors with intelligent Variable Speed Drives (VSD) allows systems to adjust speed in real-time to match actual load requirements, reducing wear on mechanical components and optimizing energy use in pump, fan, and compressor networks.
Engineered drive packages designed to meet the strict uptime and safety requirements of heavy industry.
Our YB3, YBX4, and YB3-HT series flameproof motors are designed to operate safely in volatile chemical processing environments. Featuring Ex d explosion-proof enclosures, these motors prevent internal ignition events from escaping into the surrounding area, ensuring reliable operation in hazardous zones.
Our YBSD and Morley flameproof motors are built to withstand the demanding conditions of mining machinery, underground conveyor systems, and coal cutters. They feature high-strength steel frames, moisture-resistant VPI insulation, and dust-tight IP55 or IP66 enclosures to ensure reliable performance under heavy mechanical loads.
We supply Laurence Scott low-starting-current motors for critical cooling water loop pump systems in power generation facilities. These custom-engineered motors are designed to start reliably under weak grid conditions without causing transient voltage drops.
Our YBU, YBUS, and YBUD series flameproof motors are designed specifically for tunnel boring machines (TBMs) and heavy cutters. Built to handle continuous vibrations, high starting torques, and variable speed operation, these motors help keep tunneling projects moving forward.
We provide vertical and horizontal high-voltage motors (YKS, YKK, and Y3 series) to power large water intake pumps, treatment pumps, and aeration blowers. These motors are optimized for continuous duty cycles (S1) and feature moisture-resistant enclosures to ensure long service life.
Our WXF series high-temperature induction motors are engineered for emergency ventilation systems. Built to handle smoke extraction and air circulation, they are certified to run reliably even during fire emergency scenarios, helping maintain safe conditions in public infrastructure and industrial facilities.
Key technical parameters, design documentation, and quality standards for international buyers and engineering teams.
To help streamline international procurement and project execution, our technical sales team works directly with client engineering departments to review key specifications:
Answers to common technical questions regarding energy-saving ratings, safety certifications, and installation procedures.
Explore our specialized range of variable speed, high-temperature, and extreme-environment electrical drives.
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