Explore our industrial range of high-efficiency low voltage and high voltage motors engineered for oil & gas, mining, marine, and hazardous environments.
Shaanxi Nanfang Motor Technology Co., Ltd. is the authorized prime distributor of Wolong Electric Drive Group Co., Ltd. (founded in 1984, listed on the Shanghai Stock Exchange in 2002 under ticker SH600580).
Over three decades of precision engineering, strategic technological mergers, and rapid production line expansion have made Wolong a globally dominant brand. With 3 major manufacturing bases, 39 modern factories, and 3 state-of-the-art research centers operating worldwide, Wolong manufactures and supplies elite motor drive control systems serving heavy industries.
Why international heavy industries choose our Chinese factories for raw capacity, technological integrity, and cost-to-performance efficiency.
By keeping raw materials sourced directly near our hubs, including high-grade electrical silicon steel and premium copper wire drawing mills, we maintain total quality control. This guarantees lead times that are 30% faster than European counterparts.
Our smart factories feature automated robotic coil winders and heavy-duty industrial Vacuum Pressure Impregnation (VPI) systems. This ensures zero air gaps in motor windings, leading to maximum dielectric strength and thermal dissipation.
Leveraging Wolong’s consolidated global acquisitions allows us to combine Western engineering specs (from GE, ATB, and Brook Crompton) with highly optimized lean production, passing massive CAPEX savings directly to global procurement managers.
A technical teardown of the high-grade materials and engineering architectures that yield low carbon footprints and extended operational lifespans.
The core of our high-efficiency motor line relies on advanced rotor manufacturing. We utilize centrifugal aluminum casting and high-pressure die-casting techniques. Molten pure aluminum is injected into the rotor core slots under controlled atmospheres, resulting in a single-piece construction that integrates rotor bars and end rings. This guarantees optimized start-up torque and eliminates structural micro-fissures.
For high-voltage and ultra-heavy industrial demands, we engineer custom copper bar rotors with precision end-ring welding, coupled with high-speed retention rings. This structure resists mechanical centrifugal force spikes during variable frequency speed swings.
The stator windings are structured with double polyester film insulated wire wrapped in reinforced glass cloth. Our insulation systems utilize medium-to-high powder mica tape. Following installation, the wound stators undergo our closed-loop Vacuum Pressure Impregnation (VPI) system using low-viscosity solventless resins.
This critical manufacturing phase ensures complete elimination of corona discharge, excellent heat transfer profiles, and full ingress resistance (IP55 to IP66 ratings) against dust, corrosive chemical vapor, and damp mining shafts.
Every motor frame (ranging from cast iron to welded steel options) is analyzed using 3D structural, fluid, and electromagnetic multi-physics simulation platforms. This guarantees that our designs isolate electromagnetic harmonic vibrations, absorb structural torque shocks, and operate with safety margins well above basic NEMA and IEC tolerances.
| Component | Standard Specifications | Advanced High-Efficiency Upgrade |
|---|---|---|
| Rotor Type | Centrifugal Die-Cast Aluminum | Oversized Copper Bar with Protective Retention Ring |
| Stator Insulation | Class F (Varnish Dip) | Class H Mica Tape + Vacuum Pressure Impregnation (VPI) |
| Frame Construction | Standard Cast Iron Grade GG20 | High-tensile Grade GG25 / Structural Welded Steel Frame |
| Fan Cover System | Pressed Steel IP22 | Low-noise System with Integrated Silencer Plates |
| Efficiency Classes | IE2 / IE3 Premium | IE4 Super Premium / IE5 Ultra Premium Efficiency |
How Wolong's strategic acquisitions combined over a century of European design with cutting-edge manufacturing.
In 2011, Wolong acquired 97.94% of the Austrian ATB Group, placing it among the top three motor manufacturing powers in Europe. This acquisition brought the prestigious brands Morley (underground mining motors) and Laurence Scott (custom low-starting-current generators) directly under our manufacturing envelope.
Brook Crompton brought over 110 years of industrial motor mastery, driving low, medium, and high-efficiency motor technology forward (the famous "W" series). Schorch, established in Germany in 1882, brought high-power offshore propulsion and explosion-proof machinery expertise, servicing the global petro-chemical and oil gas networks.
In 2018, GE's Commercial & Industrial Electrical Equipment segment joined the Wolong Group. This integration brought American NEMA design assets and raw manufacturing muscle to Wolong's dynamic global catalog, ensuring top-tier mechanical and insulation standards for the North American market.
Evaluating the transition from IE3 to IE4/IE5 efficiency classes and the role of intelligent motor control in achieving net-zero compliance.
Electric motors account for over 70% of energy consumption in modern industrial plants. Moving from IE3 to IE4 or IE5 Ultra-Premium Efficiency results in energy loss reductions of 20% to 30%, yielding complete payback within 18 months of continuous pump, fan, or compressor operation.
With regulations tightening across Europe (EU Ecodesign) and North America (NEMA standards), deploying highly efficient permanent magnet motors and explosion-proof variable speed drives is crucial for avoiding costly compliance penalties.
Integrating OLI vibration sensors and real-time current signature analysis modules into modern electric drives enables plants to transition to predictive maintenance models, preventing unexpected shutdowns in critical chemical processing plants.
Our motors are rigorously engineered and tested to meet international trade compliance requirements and operate safely in the world's most hazardous environments.
ATEX / Nemko
CSA Standard
CE Certification
CCC Mark
SABS Approved
TESTSAFE Mining
Our senior engineering team answers key questions from global procurement managers regarding industrial motor selection, standards, and savings.
Explore our targeted industrial line of explosion-proof three-phase induction and synchronous motors designed for harsh environments.
Connect with Shaanxi Nanfang Motor Technology Co., Ltd. for direct-from-factory quotes, design customization files, and dynamic efficiency configuration support. Let's build a reliable system for your operational needs.
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