Explore our leading foot and flange mounted drive configurations engineered for hazardous locations, mining operations, and general industrial duties.
Shaanxi Nanfang Motor Technology Co., Ltd. is the authorized global distributor of Wolong Electric Drive Group Co., Ltd. Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has ascended to the pinnacle of the international electrical drive market.
Integrating global engineering synergies, Wolong operates 3 key regional manufacturing hubs, 39 hyper-automated factories, and 3 state-of-the-art Research & Development complexes globally. Committed to a premier, system-integrated solution model, Wolong continues to push boundaries in industrial power systems, control technology, and environmental resilience.
Bridging safety, high mechanical capability, and energy-saving protocols across diverse mounting dimensions.
Our heavy-industry foot and flange motors carry certified explosion protection configurations (Ex d, Ex de, Ex eb, Ex ec) ensuring safe operations in gaseous zones (Zone 1 and Zone 2) and dust hazardous atmospheres.
We minimize thermal losses and carbon footprints. Our variable-frequency permanent magnet motors (WEPM series) and high-efficiency induction systems save operational costs in 24/7 process cycles.
Supporting IM B3 (foot mounted), IM B5 (flange mounted), and IM B35 (dual foot-flange mounted) setups. We provide mechanical drop-in replacements for standard IEC and NEMA frames.
Combining over a century of European design expertise with highly reliable Chinese manufacturing capabilities.
In 2011, Wolong strategically acquired a 97.94% controlling stake in the Austrian ATB Group, one of Europe's top three electric motor manufacturers. ATB’s portfolio brought massive technology injections in high-specification drives, including chemical process motors and heavy synchronous machinery, enhancing Wolong's overall design capabilities.
Under the ATB umbrella, Morley has represented elite underground coal mining motors for over 130 years, becoming synonymous with explosion safety and mechanical endurance. Laurence Scott is a pioneer in nuclear power station drive design and low-starting-current marine generators, winning the Queen's Award for three consecutive years.
As a global leader in high-efficiency design, Brook Crompton has driven motor development for over a century. From standard 'W' series low-voltage products to customized high-voltage packages, their technology optimizes reliability in extreme marine, chemical, and desert locations.
Established in 1882, Schorch represents high-quality drive systems. Collaborating on international mega-projects, Schorch motors drive heavy pumps, compressors, and ventilation systems in oil, gas, and steel mills globally.
Nanyang Explosion-proof (CNE) joined Wolong in 2015, solidifying our status as China's largest base for explosion-proof drives. Further enriched by a joint venture with General Electric (GE) in 2018, Wolong combines American industrial standards with high-volume production efficiency.
Analyzing key structural elements that guarantee longevity under harsh axial thrusts, high starting torque, and corrosive atmospheres.
Our rotors feature optimized squirrel cage structures. Cast aluminum configurations utilize centrifugal casting or vacuum high-pressure die-casting, resulting in a single-piece component that integrates the rotor bars and end rings. This design minimizes internal porosity, enhances starting torque, and improves mechanical reliability.
For high-capacity, heavy-duty applications (such as coal shearers, large ventilation fans, and pipeline compressors), we use custom copper bar rotors with TIG welding processes and high-speed retaining rings, ensuring stability at speeds exceeding 3600 RPM.
Our stator windings use premium copper wire wrapped in high-mica-content tape, insulated with high-grade polyester films and reinforced glass cloths. Utilizing the advanced Vacuum Pressure Impregnation (VPI) system, the complete winding structure receives deep resin penetration.
This process eliminates air pockets, providing moisture resistance, high dielectric strength, and excellent thermal dissipation capabilities (certified for Class F and Class H environments).
Constructed using digital finite element analysis (FEA) and fluid dynamics tools, our high-grade cast iron frames provide excellent structural rigidity and heat dissipation. The frame structure ensures stability against high mechanical shocks and minimizes vibrational resonance.
With precise machining for IM B3 (foot), IM B5 (flange), and IM B35 (combination) configurations, these frames facilitate drop-in integration with pumps, gearboxes, and industrial machinery.
The ventilation system consists of an aerodynamic fan cover body, air guides, protective windows, and silencer plates. Featuring a compact, lightweight design that minimizes vibration, the side-inlet layout prevents performance drops when placed close to obstacles.
Equipped with acoustic absorbing linings, the system reduces high-frequency fan noise while maintaining IP22 to IP55 protection ratings, preventing external contact with moving parts.
Driving the transition toward smart, ultra-efficient, and sustainable industrial powertrain networks.
We are expanding our WEPM and TBVF permanent magnet synchronous motor lines. By eliminating rotor copper losses and adopting rare-earth materials, these motors achieve IE5 ultra-premium efficiency, maintaining energy-saving performance even under partial load profiles.
Incorporating vibration sensors and winding temperature detectors directly into the motor housing. Our smart diagnostic modules communicate operational data via Modbus, Profibus, or wireless networks to detect bearing wear, insulation aging, or load misalignments before failures occur.
Transitioning toward solvent-free resins and low-emission VPI varnishing methods. We aim to minimize VOC emissions during manufacturing and use circular materials that allow for component recycling at the end of the motor's operating life.
Delivering tailored power solutions that withstand high ambient temperatures, aggressive chemical vapor exposure, and extreme dust loads.
Petrochemical pumps and process compressors require continuous operation under explosive gas hazards. Our explosion-proof variable frequency motors (such as the YBBP and YBBPX series) feature flameproof designs, high thermal reserves, and specialized marine-grade paint options, making them suitable for refineries and offshore platforms.
Underground mining applications require robust equipment design. Relying on Morley and Nanyang technologies, our water-cooled mine motors, shearer drives, and conveyor systems feature high starting torque, robust cast iron enclosures, and coal-dust-resistant sealing systems.
Marine environments require salt-spray resistance and high vibration tolerance. Using Laurence Scott engineering, our foot-flange marine induction motors feature IP56/IP66 enclosure protection, anti-condensation space heaters, and specialized offshore certifications (ABS, DNV-GL, LR).
Driving large municipal water pumps and wastewater aeration systems requires continuous energy efficiency. Our YE4 and YE5 ultra-high efficiency motors reduce grid demand, feature high power factors, and support flexible mounting configurations for direct drive vertical pumps.
From auxiliary draft fans in thermal power plants to distributed synchronous condenser systems for grid stabilization, our high-voltage non-sparking and brushless synchronous motors provide reliable operation for global energy networks.
Obtaining necessary regional approvals to ensure safety, reliability, and smooth cross-border integration.
ATEX / Nemko
CSA International
European CE
China Compulsory (CCC)
SABS South Africa
TESTSAFE Australia
Our motors are designed, manufactured, and tested to meet international standards, simplifying the import and commissioning process:
By implementing advanced smart manufacturing technologies, Wolong’s main production bases utilize automated CNC machining, high-capacity VPI systems, and computerized testing facilities. This setup ensures consistent quality and fast production times for custom orders.
Through direct logistics routes and raw material agreements, we minimize price fluctuations and delivery delays. As a global exporter, Shaanxi Nanfang Motor Technology Co., Ltd. coordinates customs clearance and shipping routes, providing reliable supply chain support for major global projects.
Critical mechanical and electrical factors when specifying foot and flange mounted drive configurations.
Foot-mounted arrangements (IM B3) transfer torsional reaction forces directly to the base plate, making them suitable for heavy coupled shafts. Flange-mounted designs (IM B5) support direct mounting to gearboxes or pump housings. For applications with high vibration and direct coupling, IM B35 (combination foot and flange) provides optimal structural support.
Direct-coupled systems use standard deep groove ball bearings. Belt-driven or high radial load setups require heavy-duty cylindrical roller bearings on the drive end. For vertical flange installations, angular contact bearings help support high axial loads, preventing premature failure.
Answering common engineering questions regarding the application and design of foot and flange mounted motors.
Explore our high-voltage and specialized permanent magnet synchronous designs engineered for process plants, chemical pumps, and mine ventilation.
NANFANG
