High-efficiency asynchronous AC motors designed to operate reliably under extreme structural loads and in explosive environments.
Shaanxi Nanfang Motor Technology Co., Ltd. is the authorized primary distributor of WOLONG Electric Drive Group Co., Ltd. founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580).
Through continuous R&D innovations and global strategic integrations, WOLONG runs 3 principal manufacturing bases, 39 advanced factories, and 3 state-of-the-art research centers globally. The brand stands out as a world leader in electric machine technology, providing robust motor control solutions across more than 58 countries.
Strategic acquisitions that bring over a century of manufacturing heritage and top-tier drive engineering expertise to our customers.
Acquired in 2011. One of Europe's top three motor manufacturers, merging elite Austrian technology with global scale.
130-year legacy in underground mining machinery, delivering extreme-duty structural designs.
Pioneers of low-starting-current naval/nuclear class propulsion and generator systems.
Innovators of premium energy-saving configurations (such as W and 10 series low-voltage units).
German standard since 1882, focused on heavy chemical and pipeline drive systems.
Global leader in electric vibration machinery and specialized explosion-proof sensors.
China's premier national R&D base for complex flameproof and high-voltage machinery.
Acquired in 2018, bringing a century of industrial design history to heavy processing drives.
Tailored motor designs optimized for fluid dynamic systems, environmental safety, and energy conservation.
Engineered for hazardous atmospheres (Zone 1, Zone 2, Zone 21, and Zone 22). Our motors meet stringent European, American, and Eurasian safety mandates.
Fully compliant with international IE3, IE4, and IE5 efficiency parameters. We provide synchronous permanent magnet motors designed to minimize industrial power loss.
Extensive catalog covering customized dimensions, high/low voltage systems, explosion-proof features, and targeted setups for axial and centrifugal fans.
Every component is engineered using advanced computer simulation models to ensure mechanical stability in demanding conditions.
Our rotors feature a robust squirrel cage design, utilizing cast aluminum produced via advanced centrifugal die-casting techniques. This integrates the rotor bars and end rings into a single, cohesive unit, providing excellent starting torque and resistance to thermal stresses.
For higher-capacity machinery, we utilize copper-bar rotor technology with specialized welding processes. The high-speed designs also include containment rings to prevent structural distortion, ensuring long-term balance and reliability.
Winding reliability is maintained through high-quality polyester film insulation reinforced with glass cloth and high-content mica tapes.
The fully wound stator undergoes a multi-cycle Vacuum Pressure Impregnation (VPI) process. This creates a solid, void-free insulation barrier that offers excellent dielectric strength, moisture resistance, heat dissipation, and mechanical durability against electromagnetic forces.
Our motor frames are engineered using multi-physics structural and fluid thermal simulation software. Fabricated from high-strength cast iron (or structural steel upon request), they offer excellent structural stiffness and efficient heat transfer.
The dynamic mechanical margins prevent resonance issues during operation, allowing the frame to absorb external shocks and minimize vibration levels under fluctuating loads.
The low-noise ventilation system consists of a dynamic air-guide cylinder, safety window, and integrated sound-attenuating panels.
A side-entry air inlet design minimizes aerodynamic obstacles behind the motor, reducing turbulence and power losses. Built-in sound-absorbing composites damp high-frequency blade noise, while the IP22 guard ensures operator safety.
How our R&D efforts are shaping the next generation of industrial ventilation drives.
We are shifting from traditional induction motors to PMaSynRM (Permanent Magnet Assisted Synchronous Reluctance) designs, drastically reducing rotor losses and helping plants achieve net-zero targets.
Integrating vibration, temperature, and current signatures directly into edge processing units. This allows for predictive maintenance, preventing unexpected fan failures in critical processes.
Developing motor-inverter systems with insulation designed to resist high dV/dt stresses, preventing premature bearing degradation caused by shaft currents.
State-of-the-art facilities designed to ensure high output quality, shorter lead times, and stable delivery schedules.
At our Industry 4.0 facilities in China, manufacturing combines automated assembly with advanced quality control. High-speed stamping presses and automatic stator winding stations ensure consistent winding dimensions, reducing electromagnetic imbalances.
Our localized supply chain covers raw materials, copper processing, precision shaft machining, and testing facilities in close proximity. This vertical integration allows us to remain resilient against global market shifts, maintaining reliable lead times.
By integrating advanced planning with localized resource management, we offer stable pricing and consistent deliveries for key industrial projects worldwide.
A summary of the core mechanical and electrical specifications evaluated by engineering procurement teams.
| Evaluation Parameter | Standard Specification | Explosion-Proof Standard | Target Applications |
|---|---|---|---|
| Efficiency Class | IE3 / IE4 / IE5 (IEC 60034-30-1) | Ex db / Ex eb / Ex ec | Continuous HVAC Systems, Main Ventilation Fan Arrays |
| Insulation System | Class F (Class H Temp Rise) | Vacuum Pressure Impregnation (VPI) | High Ambient Temperatures, Hot Vapors |
| Protection Rating | IP55 / IP56 / IP65 / IP66 | Dust Ignition Proof (Zone 21/22) | Marine, Mining, Cement Plant Ventilation |
| Bearing Configuration | SKF/FAG Re-greasable Bearings | Insulated Bearings for VFD use | Tunnel Ventilation, Variable Speed Fan Drives |
| Cooling Method | IC411 (Self-Ventilated) / IC416 (Forced) | Water-Cooled (IC71W) Options | Compact Enclosures, Mining Shaft Fans |
Our products carry certifications for major global markets, meeting relevant ISO, NEMA, IECEx, and ATEX standards.
Nemko / ATEX
CSA Standard
CE Directives
China CCC
SABS Approved
TestSafe Mining
Our motors comply with major international testing and performance frameworks:
Answers to common engineering questions regarding the application and deployment of our industrial fan motors.
The Vacuum Pressure Impregnation (VPI) process eliminates internal voids in the stator windings. This improves thermal conductivity, prevents moisture ingress, and protects the coils from electromagnetic vibrations and thermal expansion stresses.
Our motors are certified to Ex d (flameproof), Ex e (increased safety), and Ex ec (non-sparking) standards. They feature robust enclosures that contain internal explosions and maintain external temperatures below the auto-ignition threshold of surrounding gases.
Yes. Our YBBP, YBBPX, and YVF series are designed for VFD operation. They are built with class H insulation, dV/dt resistant wire, and options for insulated bearings to protect against shaft currents.
We offer specialized configurations with Class H insulation, high-temperature lubricants, and alternative cooling methods like IC71W (water-cooled) or IC416 (forced ventilation) to maintain safe operating temperatures.
Yes, we offer NEMA-compliant configurations with UL and CSA certifications, ensuring compliance with efficiency, torque, and mounting footprint standards in North American markets.
All rotors are dynamically balanced to ISO 1940 standards (typically G1.0 or G2.5 balance grades) on computerized testing beds. This minimizes vibrations during operation, extending the service life of the bearings.
High-efficiency and explosion-proof motors designed for heavy industrial fan, pump, and compressor applications.
NANFANG
