Explore our premium high-voltage and explosion-proof motors certified for demanding industrial and hazardous operations worldwide.
In modern industrial manufacturing, negative pressure and vacuum systems are critical to dust extraction, hazardous material containment, chemical vaporization, and central plant sanitization. Whether in underground coal mines, deep-sea vessels, or advanced petrochemical refineries, industrial vacuum systems must operate continuously under harsh environments. The motor driving these vacuum pumps is the heart of the system.
Historically, the market has demanded motors that are not only powerful but also resilient to explosion hazards. Large volume dust collection (such as wood flour, metal powder, or coal dust) presents significant combustible dust risk. Therefore, leading suppliers look for heavy-duty IE3, IE4, and IE5 explosion-proof motors that comply with international safety frameworks such as ATEX and IECEx.
As a global pioneer, our goal is to deliver custom OEM configurations that match these strict requirements, providing robust thermal characteristics, optimized torque speeds, and absolute ignition isolation.
B2B procurement teams don't just search for "vacuum motors"; they search for engineering safety, guaranteed uptime, and global compliance pathways. Standard commercial vacuum motors fail when subjected to the demands of a 24/7 central vacuum ring in a pharmaceutical cleanroom or an oil rig deck.
Through our authorization by Wolong Electric Drive Group Co., Ltd, we deliver industrial vacuum motor drive systems that benefit from centuries of accumulated European engineering (via ATB, Schorch, Morley, and Laurence Scott) integrated with highly efficient Chinese manufacturing. By customizing frame designs, insulation methods, and shaft configurations, we assist OEMs in scaling their specialized vacuum machinery designs with zero engineering overhead.
Shaanxi Nanfang Motor Technology Co., Ltd. serves as the premier authorized distributor of Wolong Electric Drive Group, a global force in motor manufacturing and control solutions since 1984.
Wolong Electric Drive Group Co., Ltd. (SH600580) has grown over three decades to operate 3 manufacturing bases, 39 advanced factories, and 3 world-class R&D centers. By acquiring elite global motor brands—including ATB, Brook Crompton, Morley, Laurence Scott, Schorch, OLI, and General Electric's industrial motor division—Wolong has structured an unparalleled design and production matrix that serves heavy industries in oil & gas, mining, maritime, and power generation.
Each brand under the Wolong umbrella brings a unique set of engineering expertise and specialized designs to our OEM vacuum and heavy machinery clients.
Over a century of Austrian precision engineering, specializing in industrial high-capacity drives.
Synonymous with quality and reliability in the underground coal mining sector for over 130 years.
Pioneers of ultra-low starting current motors, supplying naval vessels and nuclear power stations.
Venerable British design leaders specializing in energy-efficient low and medium-voltage AC motors.
Established in Germany in 1882, the standard-setter for high-efficiency heavy-duty drives.
The undisputed global leader in high-reliability industrial vibration motors and sensors.
Providing robust product portfolios that comply with strict global safety protocols and structural efficiency.
Passed stringent global certifications: ATEX, IECEx, CU-TR (EAC), and TestSafe. Perfect for negative pressure vacuum systems dealing with combustible dust, grain elevator filtration, and chemical exhaust streams.
Offering premium high-efficiency synchronous and asynchronous permanent magnet motors, minimizing active energy loss and heat output during long-duration runs.
Leveraging state-of-the-art research centers in China, Europe, and Japan. Using advanced Shanghai central research laboratories to spearhead advancements in high-speed vacuum drive technologies.
Every structural aspect of our heavy-duty motors is designed to withstand structural stress, dust ingress, and thermal dynamics.
Our stator coils are crafted using polyester film reinforced with high-grade glass cloth, employing low-powder mica tape or medium-powdered mica tape with high mica content. Following the winding sequence, the stator goes through our advanced Vacuum Pressure Impregnation (VPI) process. The pristine white stator core that emerges is highly dense, moisture-resistant, and boasts outstanding dielectric strength. This guarantees thermal stability at class F or H levels, crucial for vacuum systems facing rapid load variations.
For standard high-performance tasks, our squirrel cage designs leverage centrifugal cast aluminum and die-casting techniques. This integrates the rotor bars and end rings into a solid monolithic block, preventing standard welding fatigue. For high-capacity or variable-frequency vacuum tasks, we use copper bar rotors utilizing dependable end-ring induction welding. High-speed rotors feature retaining protective rings to maintain mechanical integrity under high centripetal force.
Developed using our proprietary digital multi-physics simulation platform, our motor frames are cast from high-strength cast iron or structural steel. The design maximizes cooling surface area while guaranteeing rigid stability. High structural redundancy isolates vibrational frequencies, preventing sympathetic resonance with high-speed vacuum fans and pumps, leading to lower operating temperatures and longer bearing life.
Operating vacuum pumps generates significant acoustic energy. To combat this, our low-noise fan cover system integrates a silencer plate, air guide cylinders, and specialized sound-absorbing materials. The side-entry air intake avoids backend airflow restrictions, reducing noise generated by turbulent flow and energy drops. Rating at IP22 minimum, it prevents contact and ingress of foreign objects, securing the fan blades from impact.
Our commitment to quality is verified by accredited global bodies, enabling our OEM partners to enter strict industrial markets with ease.
CE Compliance
ATEX Standard
IECEx Certified
CSA Standard
ISO 9001 Ex
- ISO 9001 System Standard: Serves as our structural framework for quality management, streamlining design, raw materials sourcing, manufacturing, and dynamic load testing.
- NEMA Standard Compliance: For North American projects, we implement strict tests covering efficiency, insulation resistance, starting current, torque profiles, and vibration isolation, achieving UL and CSA listings.
- IECEx and ATEX Directives: Designed for high-risk zones where combustible gas, vapor, or dust is present. Our flameproof designs prevent interior spark propagation from igniting external ambient atmospheres.
- TestSafe Australian Certification: Secures direct compliance entry into the Australian mining market, establishing Wolong as a trusted supplier for Southern Hemisphere coal and mining infrastructure.
A visual gallery showcasing our manufacturing processes, including automated coil winding, housing machining, and quality assurance checkpoints.
Connecting industrial motor performance to physical work processes across multiple industries.
In wood processing, flour milling, and metal grinding, massive vacuums collect airborne dust. Our ATEX/IECEx certified motors ensure that high friction or electrical faults never trigger dynamic dust explosions.
Petrochemical refining requires continuous vacuum pumping of volatile gases. Our positive pressure and flameproof motors isolate internal windings, protecting the system from flammable vapor ignition.
Used to run heavy coal dust extraction pumps and tunnel boring ventilation systems, Morley and Nanyang-designed explosion-proof motors withstand moisture, impact, and gas presence.
Shaanxi Nanfang Motor harnesses the world's most robust industrial motor supply chain. From the sourcing of raw electrical steel sheets and copper windings to advanced digital multi-physics testing facilities, our factories operate with extreme efficiency. This integrated structure shortens lead times, guarantees prototype iteration cycles, and lowers tooling costs for custom OEM frame configurations.
By blending European engineering standards (accumulated from acquisitions like Brook Crompton, ATB, and Schorch) with highly automated Chinese manufacturing plants, we provide high-reliability motors at optimized cost-to-performance ratios. B2B importers benefit from global certifications, short lead times, and flexible shipping operations.
Answers to common technical and logistical questions asked by global B2B procurement managers and OEM developers.
Complete your sourcing specifications with our advanced high-efficiency, multi-phase, and marine certified motor line-up.
NANFANG
