Explore our leading industrial low-voltage & high-voltage electric motor configurations designed for high-availability severe-duty environments.
Your authorized global gateway to Wolong Electric Drive Group's world-leading power transmission and system solutions.
Shaanxi Nanfang Motor Technology Co., Ltd. serves as the authorized direct distributor of Wolong Electric Drive Group Co., Ltd. Established in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has transitioned from a localized manufacturing facility into a global powerhouse of electrical propulsion. With 3 major global manufacturing bases, 39 state-of-the-art factories, and 3 global research centers, Wolong drives structural innovation in industrial ventilation, mining, energy development, and heavy manufacturing.
Combining the heritage of European craftsmanship, US design standards, and massive Chinese manufacturing efficiency.
Acquired by Wolong in 2011, Austria-based ATB is one of the three major European motor manufacturers. Incorporating Morley and Laurence Scott, ATB provides legendary underground mine motors and low-starting-current nuclear and naval generators.
A century-old pioneer in electric motor technology and energy-efficient designs. Famous for premium "W" and "10" series low, medium, and high-voltage AC motors operating in hazardous and extreme marine environments.
Established in Germany in 1882. Schorch represents the gold standard in heavy industry drive systems, serving massive oil, gas, chemical processing, and municipal wastewater engineering applications worldwide.
Since teaming up with Wolong in 1999, OLI has maintained the largest global market share for industrial vibration motors and Ex vibration sensors, ensuring precision material handling and safety monitoring.
China's absolute largest research and manufacturing base for explosion-proof motors. Merged with Wolong in 2015, they provide safe, high-voltage positive pressure and dust flameproof drive packages for oil, gas, and coal fields.
Acquired into Wolong's platform in 2018. Combining GE's engineering heritage in heavy petrochemicals, metals processing, and paper plants with Wolong's optimized supply chain for worldwide markets.
How Wolong is defining the next generation of smart, eco-designed HVAC electric motor technology.
Industrial air handling and chiller systems are rapidly moving from traditional AC Induction Motors (ACIM) to Permanent Magnet Synchronous Motors (PMSM) and Electronically Commutated (EC) systems. By utilizing high-coercivity NdFeB magnets, Wolong’s WEPM series achieves IE5 ultra-premium efficiency, reducing rotor losses to zero and decreasing thermal signatures in confined HVAC system spaces.
Integrating vibration sensors (leveraging OLI technology) and temperature detectors into the motor housing enables real-time bearing condition assessment. Edge devices analyze vibration frequencies and stator temperature changes, allowing HVAC operators in data centers and factories to execute predictive maintenance before unexpected downtime occurs.
Our future technology roadmap aligns directly with the European Ecodesign Directive and ASHRAE 90.1 standard upgrades. Every new OEM motor design optimizes copper-to-iron slot ratios and relies on low-loss electrical steel laminations. This approach lowers scope-2 indirect emissions for building operators, providing a clear path to net-zero operations.
Tailored motor systems for demanding municipal, commercial, and high-risk environments.
Hyper-scale data centers demand 24/7 reliability. Our variable frequency (VFD) synchronous motors drive massive water pumps and cooling towers, dynamically adjusting torque to fit IT loads. This cuts energy usage by up to 35% compared to constant-speed systems.
In petrochemical plants and underground mining, explosive dust and gas mixtures are constantly present. Utilizing the CNE Nanyang and ATB explosion-proof designs, our HVAC fan motors isolate internal sparks, ensuring high reliability in hazardous Zone 1 and Zone 2 areas.
Equipped with specialized high-level corrosion protection (C4/C5 marine grade coatings), our high-voltage three-phase induction motors (like the Schorch and ATB series) power cooling machinery on offshore vessels, commercial hubs, and industrial refrigeration centers.
An inside look at the high-grade materials and structural components that define Wolong's motor reliability.
The rotor features a classic, high-rigidity squirrel cage design. Cast aluminum rotors are produced using centrifugal casting or advanced die-casting techniques. Molten pure aluminum is injected directly into the slot structures of the laminated rotor core, creating a highly integrated single-piece assembly of rotor bars and end rings.
For large-capacity high-voltage motors, copper bar rotors are used. These rely on specialized structural bar securing and induction end ring welding. Additionally, custom non-magnetic alloy retaining ring designs prevent centrifugal displacement on high-speed configurations.
The stator coil is built using polyester film backed with glass cloth, combined with high-grade, medium-to-low powder mica tape. This ensures excellent thermal transfer and dielectric strength.
After the stator coils are wound, they undergo the Vacuum Pressure Impregnation (VPI) process. The solventless epoxy resin cures into a solid, moisture-impermeable structure. This VPI treatment gives the stator excellent resistance to vibrations, mechanical shocks, moisture, and chemical exposure, comfortably meeting Class H thermal requirements.
Our motor frames are optimized using dynamic structural and thermal fluid multi-physics simulations. Made from high-strength cast iron or custom welded structural steel plate, they offer strong structural support and minimize thermal strain.
The frame design prioritizes natural frequency isolation to prevent resonance when paired with variable frequency drives. This design choice handles mechanical stress, dampens vibration, and keeps operating temperatures low.
The fan cover system includes an integrated air guide cylinder, protective intake screen, and silencer plate. Its light, compact design helps reduce vibration and structural noise.
The side-oriented air inlet prevents airflow blockages from surrounding walls. It optimizes the airflow path to minimize energy losses and turbulence noise. The system features built-in acoustic damping materials and is rated IP22, keeping operators safe while protecting internal fan assemblies.
Witness the engineering processes behind our reliable HVAC and industrial electric motors.
Combining automated production technologies with smart supply chain management.
Our factories use automated copper winding stations that regulate wire tension, preventing microscopic insulation micro-fractures. In addition, automated dynamic balancing equipment tests rotors at full operating speed, reducing residual imbalance and keeping motor vibrations to a minimum.
Every motor shipped from our facilities is assigned a digital ID. From high-voltage insulation tests to load simulation assessments, all quality control reports are saved to a central quality tracking database. This gives global procurement teams transparency and records for audits.
By sourcing raw electrical steel sheet, high-grade copper wire, and heavy structural castings locally, we shield our operations from global commodity price spikes. Our central logistics network ensures dependable freight delivery to major international ports.
Meeting quality, performance, and explosion-safety standards for import and operation worldwide.
Nemko / ATEX
CSA Standard
CE Mark
CCC (China)
SABS (South Africa)
TESTSAFE
WOLONG has secured major global product certifications, enabling trouble-free import and installation in international markets:
Assisting procurement directors with engineering compliance and supplier qualification processes.
We help engineering teams build precise Requests for Proposal (RFPs). We ensure standardizing requirements like starting-to-nominal current ratios, winding temperature limits (Class F temperature rise under Class H insulation), and specific sound power level limits.
To meet corporate sustainability goals, our motors come with material breakdowns that simplify end-of-life recycling. We provide efficiency certification data (such as IE3, IE4, and IE5 ratings) to help document operational carbon reduction achievements.
We welcome third-party inspectors (such as SGS, Bureau Veritas, or TÜV) to audit our facilities. Auditors can inspect our VPI equipment, stator balancing areas, dynamic testing systems, and high-voltage insulation testing setups.
Answers to common questions about selecting, customizing, and importing high-performance industrial motors.
PMSM motors use internal permanent magnets to generate rotor flux, eliminating electrical losses in the rotor. This design results in higher efficiency (reaching IE5 standards), less heat output, and a more compact frame footprint. These benefits make PMSM motors ideal for variable-torque fans and chiller units.
Our explosion-proof motors, manufactured under ATEX, IECEx, and CNE Nanyang guidelines, feature heavy-duty flameproof paths, flame-arrester breathers, and reinforced terminal box enclosures. The designs prevent any internal spark or thermal hot spot from igniting external hazardous gases or dusts.
Vacuum Pressure Impregnation (VPI) replaces air pockets in the stator winding insulation with a specialized solventless epoxy resin. This process increases dielectric strength, improves thermal dissipation, and prevents moisture entry, ensuring stable operation in humid HVAC settings.
Yes. We design and build custom shaft extensions, specific mounting configurations (such as custom B3, B5, or B35 flanges), and modified terminal boxes to match your existing HVAC system dimensions and electrical requirements.
Explore our certified range of high-safety induction and synchronous motors designed for global industrial deployment.
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