Engineered for extreme performance, certified efficiency, and robust operations under the harshest hazardous environments.
Shaanxi Nanfang Motor Technology Co., Ltd is the official authorized distributor of Wolong. Wolong Electric Drive Group Co., Ltd., founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), stands at the absolute pinnacle of global industrial electrification. Through continuous strategic expansion and technology integrations, Wolong has established 3 major manufacturing bases, 39 manufacturing factories, and 3 global R&D centers.
Dedicated to global brand dominance, Wolong leads the field in R&D, processing technology, high-end intelligent manufacturing, and multi-market distribution operations. Our alliance bridges advanced engineering with seamless localization networks, empowering heavy industrial clients globally with highly specialized drivetrain solutions.
The trajectory of Wolong's ascendancy to global leadership is characterized by the strategic acquisition of world-class, century-old electric drive manufacturers.
Acquired in 2011, Austria's ATB Group is one of the top three European motor manufacturers. The group includes Morley (holding a 130-year legacy of explosion-proof coal mine equipment) and Laurence Scott (famed for low-starting-current designs powering nuclear facilities and naval fleets, yielding the prestigious Queen’s Award for three consecutive years).
Brook Crompton brings over 110 years of premium low, medium, and high-voltage AC motor engineering, including the premium 'W' energy-efficient range. Germany's Schorch, established in 1882, defines standards for extreme-duty customized drive solutions within oil & gas, chemical refinement, marine propulsion, and heavy iron/steel processing sectors.
In 2015, Wolong integrated Nanyang Explosion-proof (CNE), China's largest R&D and production base for hazardous environment motors. Followed by the acquisition of General Electric's (GE) industrial motor division in 2018, acquiring GE’s century-long legacy in material processing, power generation, water infrastructure, and aerospace-level manufacturing protocols.
Why global enterprises trust China's premier 3-phase AC electric motor factory for high-capacity, high-specification procurement.
The manufacturing cluster of Wolong in China delivers unmatched supply chain synergies. As the global epicenter for industrial electrification components, our factories draw from direct, localized access to high-grade raw materials. From high-permeability electrical steel laminations and premium-grade oxygen-free electrolytic copper windings, to specialized structural castings, every step of the supply chain is vertically integrated.
By bypassing external supply disruptions, we offer significant lead-time compression. Unlike traditional regional suppliers, our factories maintain localized advanced metallurgy casting houses, precise CNC machining centers, fully automated stator winding stations, and automated vacuum pressure impregnation (VPI) facilities under a single operational umbrella. This control over raw material procurement and component processing yields consistent structural excellence and price stability.
Furthermore, testing and compliance protocols are baked into the production ecosystem. Every single motor must pass extensive testing at our localized state-of-the-art testing stations, capable of load-testing high-voltage systems up to 15MW. This unparalleled capacity translates directly to massive capital-expenditure savings and quality assurance for worldwide EPC and engineering procurement partners.
An anatomical engineering breakdown of the construction that provides our three-phase AC induction and synchronous motors with their legendary durability.
Our rotors utilize advanced squirrel-cage structural designs. For low-to-medium voltage configurations, cast aluminum rotors are manufactured using high-pressure centrifugal casting or precise die-casting. This creates a solid single-piece construction, integrating rotor bars with end rings to prevent void defects, thereby optimizing torque profiles and structural longevity.
For high-capacity, high-voltage motors, custom copper-bar rotors are utilized. These feature precise copper bars inserted into keyways, secured with end rings using high-frequency induction silver-alloy welding. High-speed rotors are equipped with structural shrink-fit non-magnetic retaining rings to resist deformation under high centrifugal stress.
Our stator windings are wound with premium enameled copper wire insulated with dual-layer polyester film and reinforced glass cloth. Specialized low-powder or medium-powder mica tape is meticulously layered to form robust corona resistance.
The entire stator assembly is treated via the Vacuum Pressure Impregnation (VPI) process using solvent-free epoxy resins. This fills microscopic air voids, securing the windings into a monolithic block. The resulting assembly offers exceptional electrical insulation, mechanical rigidity, high heat transfer, and complete protection against moisture and chemical contamination.
Using digital simulation platforms for mechanical, thermal, and fluid dynamics, our motor frames are optimized for maximum heat dissipation and vibration dampening. Constructed from premium cast iron (or fabricated steel for mega-frame configurations), the housing provides extreme structural rigidity.
This design handles severe mechanical shock loads, maintains low internal temperatures, and ensures ample natural frequency margins, preventing resonance with driven equipment like compressors and turbines.
Our low-noise fan cover system features an integrated design comprising an aerodynamic air guide cylinder, high-durability protection screens, and specialized sound-absorbing silencer plates. The intake layout minimizes flow turbulence and pressure drop, significantly reducing acoustic emissions.
Rated at IP22 for physical contact protection, the system uses sound-absorbing composites to mitigate high-frequency blade-pass noise, helping operations comply with stringent environmental noise regulations.
Answering the complex mechanical and electrical specifications required by engineering procurement groups.
To meet global carbon-reduction regulations, we design and manufacture low and high-voltage motors reaching IE4 and IE5 efficiency classes. We utilize both asynchronous induction designs and high-efficiency permanent magnet synchronous motor (PMSM) systems to optimize total cost of ownership (TCO).
Modern plants demand variable speed control. Our motors are built with VFD-compatible insulation systems, featuring reinforced phase isolation and insulated bearings (or grounding brushes) to eliminate common-mode voltage damage and electrical pitting of the bearings.
From custom shaft dimensions and non-standard mounting flanges to specialized double-shaft extensions, PT100 temperature sensors, space heaters, and water-jacket cooling systems, our engineering team tailors motors to match existing footprint layouts.
Our global footprint is backed by rigorous compliance certifications, easing entry into regulated jurisdictions.
Operating a global enterprise requires adherence to local electrical code specifications. By holding key international marks, Wolong motors clear compliance hurdles in major industrial regions:
From deep mines to marine propulsion, our 3-phase AC electric motors run critical infrastructure worldwide.
For flameproof underground applications, YBK3 and YBBPX high-voltage series motors power shearers, continuous miners, and heavy-duty conveyor systems. Built to withstand coal dust and mechanical shock loads under tight space constraints.
Explosion-proof YBX5 and WEBP3 series variable frequency motors drive pumps, compressors, and blowers in volatile gas environments (Class I Div 1 & Zone 1/2), ensuring continuous plant uptime.
Custom marine-grade synchronous and asynchronous motors power thrusters, water pumps, winches, and outboard electric drives. Engineered with high corrosion resistance to withstand salty, humid marine environments.
Providing ventilation for tunnels, steel mills, and glass processing plants. Designed with low vibration characteristics to extend bearing life under continuous radial loads.
Powering heavy pump drives, aerators, and processing machinery. Highly efficient motors featuring IP55 and IP56 ingress protection to resist water damage and chemical aerosols.
Using variable frequency PMSM motors (WEPM series) for dynamic speed control. Ideal for precise positioning in heavy conveyor lines, textile machinery, and automotive assembly plants.
Embracing the fourth industrial revolution with intelligent, highly integrated powertrain technologies.
The industrial electric motor industry is undergoing a digital transformation. Wolong is leading this change by integrating IoT sensor suites directly into our high-voltage and explosion-proof motor systems. These sensors monitor vibration, temperature, flux density, and acoustic signatures in real time.
By processing these parameters, our system detects potential issues—such as bearing wear, winding insulation degradation, or shaft misalignment—before they lead to failure. This shift from scheduled maintenance to predictive analytics helps minimize unplanned downtime in high-cost industries like oil and gas refining and power generation.
Additionally, transitioning to ultra-high efficiency permanent magnet synchronous motors (PMSM) helps reduce industrial carbon emissions. PMSM designs minimize rotor losses, delivering high torque densities and maintaining high efficiency even at partial loads, supporting green corporate directives.
Answers to common technical questions asked by project engineers, procurement managers, and systems integrators.
High-voltage systems, positive pressure shells, and water-cooled explosion-proof assemblies designed for demanding global industries.
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