As the premier authorized global distributor of Wolong Electric Drive Group Co., Ltd (founded in 1984, listed on the Shanghai Stock Exchange, Code: SH600580), Shaanxi Nanfang Motor Technology bridges the gap between state-of-the-art motor fabrication and demanding global engineering requirements.
Wolong operates as an undisputed industrial vanguard, controlling over 39 state-of-the-art manufacturing facilities, 3 core technology divisions, and 3 internationally recognized R&D networks in China, Europe, and Japan. Our collective footprint extends across all continents, bringing precision mechanical drive technology to major oil, gas, chemical, maritime, energy, and mining operations worldwide.
In the contemporary industrial landscape, the transition toward energy-efficient, robust, and safe electric drivetrains has accelerated. Exporters and distributors are encountering complex demands from global EPC contractors and system integrators.
Modern regulatory systems like the EU Ecodesign requirements demand transition toward IE4 and IE5 super-premium efficiency brackets. High-efficiency motors radically lower the Total Cost of Ownership (TCO) and diminish indirect Scope 2 carbon emissions during service lifetimes exceeding 20 years.
Explosion-proof motors (Ex-proof Class d, e, and n) have become critical inside petrochemical refineries, chemical processing units, and deep underground coal mines. The integration of certifications like ATEX, IECEx, and EAC ensures risk prevention in areas exposed to volatile hydrocarbon gases or combustible coal dust.
Modern procurement demands integrated vibration, temperature, and current sensors (like OLI Ex vibration sensors). Real-time telemetry signals potential mechanical wear (bearing failure, stator winding insulation degradation) long before it triggers a costly unplanned facility shutdown.
A closer engineering analysis reveals the meticulous manufacturing processes Wolong integrates to guarantee mechanical longevity and performance in severe operational environments.
Our rotors feature the rugged squirrel cage design, primarily utilizing centrifugal aluminum casting or precision high-pressure die-casting processes. Molten pure aluminum is injected into the high-grade electrical steel laminations, creating a solid unified core that eliminates internal voids and thermal points.
For high-capacity, heavy-duty applications, we deploy copper bar rotors. These utilize high-conductivity oxygen-free copper bars inserted into the slots, securely braced with end-ring induction welding. High-speed models are further secured by outer retaining rings, preventing centrifugal distortion at high RPMs.
The stator coil operates as the electromagnetic heart of the motor. Our windings utilize high-conductivity copper insulated with polyester film backed by protective glass-cloth matrices. We apply premium medium and low-powder mica tapes with high mica density, ensuring supreme dielectric strength.
The entire stator assembly undergoes the state-of-the-art VPI (Vacuum Pressure Impregnation) process. VPI completely evacuates air bubbles, moisture, and micro-voids, replacing them with a highly cross-linked solventless resin. This ensures optimal thermal dissipation, extreme moisture exclusion, chemical resistance, and high mechanical rigidity against electromagnetic forces.
The motor enclosure is built using structural fluid and multi-physics simulation platforms. This ensures proper structural redundancy and optimization of cooling fin geography to maximize heat convection. We use high-tensile cast iron or fabricated structural steel for high-capacity variants.
The frame is engineered with high vibration absorption margins and structural stiffness, avoiding resonant mechanical harmonics. It easily handles external mechanical shocks, maintains minimal frame vibration velocities, and yields extremely low local temperature increases under continuous load conditions.
Our cooling system integrates a high-efficiency fan cover, aerodynamic air guide cylinder, protective mesh window, and acoustic silencer plate. This layout redirects air path dynamics to minimize turbulence, significantly reducing acoustic noise levels caused by fan pressure differentials.
Constructed with specialized noise-damping materials, it absorbs high-frequency whistling. In addition, the fan cover boasts an IP22/IP44 protective rating, preventing entry of foreign debris and safeguarding operators from moving fan components.
Wolong Group has grown through strategic acquisitions of the world's most historically significant industrial motor brands, combining European precision engineering with Chinese scalable manufacturing power.
Wolong acquired a 97.94% stake in the Austrian ATB Group, positioning itself among the top three motor manufacturers in Europe. This acquisition brought renowned specialized brands under Wolong, including Morley and Laurence Scott.
Morley: Boasts a 130-year legacy in underground mining, delivering high-performance explosion-proof coal shearer and conveyor drives.
Laurence Scott: Famous for supplying auxiliary drive motors with ultra-low starting currents for nuclear power plants and marine generators for British naval vessels.
Founded in 1882, Schorch joined Wolong. Schorch is a global benchmark for custom high-power high-voltage motors, serving heavy industries like offshore oil and gas platforms, petrochemical refining, desalination projects, and large wind tunnel test systems.
Brook Crompton: Known for their high-efficiency "W" and "10" low and medium-voltage AC motor series designed for harsh environments.
OLI (Italy): Joint ventures dating back to 1999 brought the world's leading vibration motors and sensors into the Wolong industrial portfolio, establishing unmatched global market share.
CNE (Nanyang Explosion-proof): China's premier explosion-proof research and fabrication base joined Wolong in 2015, dominating the petrochemical, mining, and military motor sectors.
GE Industrial Motors (2018): Wolong acquired General Electric's industrial motor business division, gaining advanced material processing engines and heavy-industry design standards.
Our comprehensive electric drive portfolio matches the rigorous engineering requirements of diverse sectors, assuring safety, durability, and maximum uptime.
Requires explosion-proof motors (ATEX/IECEx/EAC) to prevent gas ignition. We supply positive-pressure flameproof models (TZYW) and increased safety systems (TAW) to drive high-capacity compressors, mud pumps, and refining machinery in Zone 1 and Zone 2 environments.
Requires rugged resistance to coal dust accumulation and high impact load. High-efficiency flameproof motors (YBSS series for conveyors, YBC series for coal shearers) utilize heavy duty housings and optimized thermal cooling paths to handle demanding torque requirements.
Demands continuous running operations with minimal down-time. High-voltage asynchronous motors (Y3, Y/YX series) run large cooling water pumps and industrial fans. VSD systems (YVF series) allow precise flow control, optimizing plant energy consumption.
With global green maritime mandates, electric propulsions are replacing internal combustion drives. Our high-efficiency outboards (40kW electric outboards) and water-cooled permanent magnet variable frequency designs operate with minimal noise and zero carbon discharge.
Securing market clearance across major industrial regions requires strict adherence to international safety, design, and environmental rules.
ISO 9001 Standard: Our manufacturing plants operate strictly under the ISO 9001 quality management standard, establishing consistent assembly accuracy, material traceability, and quality control from raw lamination sheets to completed drive testing.
IECEx & ATEX Directives: Essential for safety within European and global hazardous zones. Wolong motors hold flameproof (Ex d), increased safety (Ex e), and non-sparking (Ex n) certificates verified by certified test houses like Nemko.
NEMA, UL & CSA Standards: Ensures mechanical and electrical compliance for North American installations. Testing includes temperature rise tests, starting torque evaluation, and insulation verification under UL and CSA frameworks.
TESTSAFE (Australia): The premier certification framework for the Southern Hemisphere. Acquiring Testsafe certification establishes clearance for Wolong mining motors to be deployed in heavy-duty coal operations throughout Australia and the Pacific region.
Nemko/ATEX
CSA
CE
CCC
SABS
TESTSAFE
Wolong remains at the forefront of electrical machinery R&D. We actively prepare our product designs to meet future efficiency standards and digital maintenance models.
Developing permanent magnet synchronous motor (PMSM) systems and synchronous reluctance motor (SynRM) solutions that exceed IE5 parameters. By eliminating rotor copper losses, these motors maintain high efficiency even under partial loads.
Integrating wireless vibration sensors and winding temperature telemetry. Using edge computing diagnostics, the motor flags anomalies like bearing wear or voltage imbalances, scheduling maintenance before failures happen.
Adopting biodegradable insulation resins and lead-free alloy materials. We aim to design recyclable stator packs, reducing the ecological footprint of our electric motor systems throughout their lifecycle.
Find answers to common questions about global distribution, standard compliance, and choosing the right industrial motor configuration.
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