Engineered for high mechanical stresses, explosion protection, and superior dynamic responsiveness in heavy industries.
The contemporary landscape of industrial electric motors is rapidly undergoing a structural shift toward energy density, high operating frequencies, and cost-efficiency. Within this matrix, Casting Aluminum Rotor Motors represent the benchmark for medium and low-voltage asynchronous platforms. Utilizing advanced die-casting or centrifugal casting technologies, these rotors minimize rotor bar air gaps, reduce electrical resistivity fluctuations, and deliver robust starting torque parameters.
As the authorized distributor of Wolong Electric Drive Group Co., Ltd (listed in 2002 under code SH600580), Shaanxi Nanfang Motor Technology Co., Ltd bridges high-end manufacturing capabilities with regional industrial requirements. Since its founding in 1984, Wolong has expanded its footprint globally, managing 3 core manufacturing bases, 39 individual production factories, and 3 state-of-the-art Research & Development hubs. Our global brand strategy consolidates world-class engineering lineages to provide tailored drive solutions to over 58 countries.
Engineered for maximum reliability, compliance, and process efficiency across critical process industries.
Certified explosion protection systems designed specifically for hazardous locations, combustible dusts, and explosive gas atmospheres.
Advanced low-loss stator geometry combined with cast aluminum cage configurations, delivering premium efficiency indices while minimizing carbon footprint.
Comprehensive drive platforms extending from low-voltage marine motors to high-voltage positive pressure systems, serving dynamic industrial demands.
Combining centennial European engineering expertise with world-class production scale to define motor system benchmarks.
Wolong operates centralized development institutes across Europe, Japan, and China (Shanghai). By conducting collaborative, cross-border research, we integrate leading-edge power electronics and advanced electromagnetic designs, assuring that our products remain at the absolute vanguard of industrial engineering.
Our portfolio integrates world-renowned, century-old engineering entities: ATB, Brook Crompton, Morley, Laurence Scott, Schorch, and OLI. Each brand brings a legacy of specialization, such as Morley's long association with heavy mining and Laurence Scott’s history with low-starting-current marine generators.
Through our integration with the Nanyang Explosion-proof Group (CNE), we leverage the domestic epicenter of hazardous-environment electric drive research. This allows us to supply certified equipment designed for critical, highly explosive applications in refineries, petrochemical complexes, and underground mining.
A timeline of strategic technological acquisitions establishing the premier portfolio of industrial motor brands.
Wolong successfully acquired a 97.94% stake in the Austrian ATB Group, one of the three major European motor manufacturers. This acquisition integrated ATB's specialized brands, including Morley (a 130-year legacy of explosion-proof mine motors) and Laurence Scott (well-known for low starting currents in nuclear and navy operations).
By bringing Schorch (est. 1882 in Germany) and Brook Crompton (est. over a century ago in the UK) into the group, Wolong combined high-voltage system expertise with premium low-voltage electric motor portfolios. These acquisitions allowed us to offer customized variable speed drive packages suitable for severe environments globally.
Integrating China's largest explosion-proof research and production center (CNE) in 2015 expanded Wolong's capacity to design flameproof and positive-pressure motors. The strategic transaction with General Electric (GE) Industrial Motors in 2018 strengthened our engineering presence and market access in the North American industrial motor segment.
A closer look at the key sub-assemblies that deliver durability, efficiency, and low maintenance overhead.
Featuring a squirrel cage architecture, our rotors are produced using die-casting or centrifugal casting techniques. Molten pure electrical-grade aluminum (99.7% purity) is injected directly into the slots of the laminated rotor core. This forms a single-piece construction integrating the rotor bars and end rings, ensuring reliable starting torque, low electrical slip, and stable balance. For specialized high-power systems, copper bar rotors with precision welding are also available.
Our stator windings use high-purity copper coils insulated with polyester film, reinforced glass cloth, and high-mica tape. The entire assembly undergoes a Vacuum Pressure Impregnation (VPI) cycle. This eliminates voids in the insulation structure, ensuring high dielectric strength, thermal dissipation efficiency, and resistance to environmental moisture and chemical exposure.
Our frames are engineered using digital multi-physics simulation platforms to model fluid dynamics, vibration profiles, and thermal performance. Constructed from high-tensile cast iron or fabricated steel, the frame design provides high structural rigidity, dynamic resonance safety margins, and efficient thermal dissipation pathways.
This system integrates a contoured air-inlet guard, optimized guide channels, and high-performance sound-absorbing lining materials. By minimizing inlet air turbulence and restricting acoustic propagation path angles, the assembly reduces overall operating noise while maintaining compliance with IP22/IP23 ingress standards.
Our products are certified by global standards organizations, facilitating seamless deployment across diverse regulatory jurisdictions.
Nemko / ATEX
CSA
CE
CCC
SABS
TESTSAFE
Our quality management strategy is built upon compliance with major international standards:
Our products are deployed across a wide range of industrial applications, ensuring reliable operation under challenging conditions.
From modern urban infrastructure systems to remote mining operations, Wolong’s motor technology provides reliable propulsion. In the oil and gas segment, our explosion-proof, positive-pressure motors drive large reciprocating compressors and process pumps, maintaining continuous operation even under extreme temperature fluctuations. In municipal wastewater and desalination plants, our corrosion-resistant induction motors run high-volume centrifugal pumps reliably.
For marine applications, our DNV-type-approved marine motors are designed to withstand high humidity and saline atmospheres, powering propulsion auxiliaries, deck machinery, and cooling fans. By coordinating manufacturing facilities in China, Vietnam, Europe, and the Americas, we provide comprehensive industrial solutions backed by local service capability.
Innovating the next generation of intelligent, ultra-efficient drive technologies.
We are refining the electromagnetic profile of our cast aluminum rotors by combining them with permanent magnet-assisted synchronous reluctance designs. This helps achieve IE5 efficiency ratings while reducing the reliance on rare-earth materials.
By transitioning toward clean casting processes, we minimize energy consumption during rotor manufacture. Real-time infrared thermal imaging during casting helps prevent rotor slot porosity and electrical imbalances.
Future drive platforms will feature embedded sensor options for real-time tracking of vibration, winding temperature, and rotor slip, enabling predictive maintenance schedules.
Detailed technical answers regarding cast aluminum rotor technologies, manufacturing processes, and selection criteria.
Premium low-voltage, high-voltage, and application-specific electric drives.
NANFANG
