High-torque drives designed to withstand the rigorous dust, heat, and safety demands of modern underground work environments in the San Francisco Bay Area and global logistics routes.
While San Francisco is globally recognized as the epicentre of technology and digital innovation, its commercial, civil engineering, and physical infrastructure systems rely heavily on heavy-duty, high-integrity industrial motors. Historically connected to the gold rush mining era, contemporary "mining" in the San Francisco Bay Area translates to complex underground transit tunneling (such as the Central Subway and BART expansions), water transport infrastructure (SFPUC's water system updates), and port management operations.
These projects demand rigorous safety compliance. Under California's Division of Occupational Safety and Health (Cal/OSHA) and national standards, motors operating in confined subterranean spaces, water treatment facilities, and coastal industrial plants must satisfy class-leading flameproof and explosion-proof criteria. Standard commercial motors cannot operate under these hazardous, high-moisture, and combustible gas conditions. Our custom lines provide the mechanical endurance and regulatory clearance necessary to keep heavy public works and industrial systems operating flawlessly.
Shaanxi Nanfang Motor Technology Co., Ltd. is the authorized global distributor of Wolong. Founded in 1984, Wolong Electric Drive Group Co., Ltd. successfully listed on the Shanghai Stock Exchange in 2002 (code SH600580). Over three decades of growth has expanded Wolong into a global power manufacturing giant, now maintaining 3 core manufacturing bases, 39 high-capacity factories, and 3 global R&D centers.
By integrating state-of-the-art research with efficient logistics, Wolong has solidified its status as a market leader in motor development, materials technology, and high-precision drive controls. Whether supplying massive mining infrastructure in the Southern Hemisphere or specialized infrastructure networks in the San Francisco Bay Area, our products deliver consistent, compliant, and cost-effective performance.
Fully certified for global usage under ATEX, IECEx, CSA, and EAC guidelines. Engineered to perform in Class I, Division 1 & 2 zones, coal mines, petrochemical refineries, and hazardous municipal piping routes.
Supports IE3, IE4, and IE5 motor topologies, including advanced Permanent Magnet Synchronous Motors (PMSM). Meets local California Title 24 industrial efficiency regulations, drastically reducing operational overhead.
Integrating century-old industrial brands including ATB, Brook Crompton, Morley, Laurence Scott, Schorch, and GE Industrial Motors, ensuring deep legacy engineering and parts compatibility.
Wolong's rise to the pinnacle of the industrial drive industry is highlighted by its acquisition of several of the world's most historically significant motor manufacturers. By absorbing their engineering frameworks, patents, and manufacturing processes, Wolong now delivers specialized electrical systems that are second to none.
Acquired in 2011, ATB is one of Europe's top three motor manufacturers. Within ATB, the Morley brand holds nearly 130 years of subterranean coal mining machinery expertise, manufacturing rugged conveyor and shearer drives. Laurence Scott is a pioneer in low-starting-current naval marine motors and nuclear power cooling systems.
A legendary British manufacturer with over a century of electric motor design expertise. Brook Crompton is famous for high-efficiency low, medium, and high voltage AC motors (Premium "W" and "10" series) optimized for harsh industrial, chemical, and offshore oil environments.
Established in Germany in 1882, Schorch represents the gold standard for high-power industrial machinery. Operating in wastewater management, steel manufacturing, chemical plants, and heavy transit tunnels, Schorch systems are recognized for their custom capabilities.
In 2018, GE's commercial and industrial motor division joined Wolong. This acquisition integrates GE's heavy-duty engineering capacity in oil and gas, processing plants, and water treatment. Additionally, the merger of Nanyang Explosion-proof Motor Group (CNE) adds China's largest explosion-proof research and development base to our resource group.
Procuring heavy industrial motors from our centralized Chinese production facilities offers unprecedented advantages for international infrastructure firms and West Coast engineering departments. Through a streamlined production network, Shaanxi Nanfang Motor bridges the gap between high-end R&D and rapid cost-effective shipping.
By integrating raw material sourcing, automated winding processes, and in-house testing facilities, we reduce manufacturing lead times and production costs by up to 30% compared to Western competitors, with no compromise on quality.
Our factories are fully compliant with ISO 9001, CE, ATEX, IECEx, UL, and NEMA guidelines. Every motor undergoes strict load testing, vibration analysis, and insulation resistance screening before leaving the assembly line.
Our specialized engineering team can adapt frame sizes, shaft dimensions, voltage profiles, and enclosure ratings (IP55, IP56, IP65, IP66) to meet the exact parameters of your project.
Our industrial and explosion-proof motors are engineered for long-term operational survival in the most unforgiving environments. Below is a detailed look at the core components of our heavy-duty motor line.
The rotor features a rugged squirrel-cage design, with cast aluminum rotors widely utilized for standard duties. These are produced using centrifugal casting or advanced die-casting techniques, integrating the rotor bars and end rings into a single-piece construction for enhanced mechanical strength. For high-capacity, high-torque systems, copper-bar rotors are utilized. Secured with reliable welding and protective ring designs, they are ideal for high-speed, continuous-duty industrial operations.
Our stator coils are wound using premium polyester-imide enameled wire, reinforced with glass cloth and high-mica-content tapes. The complete assembly undergoes the Vacuum Pressure Impregnation (VPI) process. This ensures void-free insulation that provides outstanding electrical resistance, exceptional mechanical strength, protection against moisture ingress, and high thermal stability under heavy loads.
Utilizing digital multi-physics simulation platforms, our motor frames are modeled for optimal heat dissipation and structural stability. Constructed from high-strength cast iron (or structural steel for custom projects), these frames provide excellent structural redundancy and natural frequency isolation. They easily endure high mechanical shocks, suppress external vibration, and ensure low running temperatures.
Designed to meet strict municipal noise thresholds, the system incorporates an optimized air guide cylinder, protective screening, and specialized silencer plates. The side-entry air intake reduces air turbulence and noise caused by flow obstruction. Rated at IP22 to prevent accidental contact, it keeps overall running noise to a minimum while maintaining maximum cooling airflow.
We understand that compliance is critical when deploying machinery in hazardous and municipal locations. Shaanxi Nanfang Motor provides products that meet the major international certification standards, easing the regulatory approval process for your projects.
Ensuring safety compliance in explosive atmospheres across the European Union.
Certified safety compliance for Canadian and North American heavy industry.
Full conformity with European health, safety, and environmental protection standards.
Mandatory safety standard for goods utilized in the Chinese domestic market.
Compliance testing validating product performance for South African markets.
Authorized entry certification for high-risk mining equipment in Australia.
Explore our complete catalog of low, medium, and high-voltage three-phase asynchronous and permanent magnet synchronous motors. All units are customizable to your precise operating speed, mounting profile, and duty cycle.
Get answers to the most common engineering and procurement questions regarding our high-efficiency explosion-proof motor systems.
Speak directly with our technical department to configure a high-efficiency drive, explosion-proof motor, or custom electrical layout tailored to your specific application.
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