Engineered to meet international industrial standards and certified for heavy-duty, critical infrastructure, and hazardous operations.
Shaanxi Nanfang Motor Technology Co., Ltd. stands as the authorized flagship distributor of Wolong. Wolong Electric Drive Group Co., Ltd., founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), has emerged as the premier global manufacturer of advanced electrical drivetrains, industrial electromagnetic motors, and automated control systems.
Through systematic research, domestic expansion, and historic global acquisitions, Wolong has unified the world's most reputable motor brands under a single, highly integrated R&D and supply chain framework. With 3 major manufacturing bases, 39 advanced factories, and 3 global R&D centers, we bring unmatched expertise directly to your facility.
Our collaborative operational scale spans major motor lineages, incorporating the technology, design frameworks, and patents of legacy motor manufacturers including GE (General Electric) Industrial Motors, ATB Group (Austria), Brook Crompton (UK), Schorch (Germany), Morley (UK), Laurence Scott (UK), and OLI Vibrators.
We solve the toughest electro-mechanical engineering challenges facing industries today:
How Wolong integrated over 500 years of combined European and North American motor engineering excellence.
Acquired in 2011, ATB stands as one of the three major European motor manufacturers. Incorporating Morley and Laurence Scott, ATB motors bring elite mining-grade toughness and nuclear-safe reliability. Morley offers 130 years of underground coal mining expertise, while Laurence Scott provides high-efficiency low-starting-current solutions widely deployed in naval vessels and critical nuclear infrastructure.
Boasting over a century of motor design mastery, Brook Crompton is a technology pioneer in high-efficiency induction and permanent magnet systems. Their premium "W" and "10" series low, medium, and high voltage AC motors are standard configurations in harsh, corrosive, marine, and explosive oil and gas operations globally.
Founded in 1882, Schorch sets the global standard for custom heavy-duty high-voltage driving systems in oil, gas, chemical, wastewater treatment, and metallurgy. Coupled with OLI's global dominance in specialized vibration motors (MVE series) and Ex-proof safety vibration sensors, our industrial range covers every physical vibration and motion environment.
In 2018, General Electric's commercial and industrial motor division officially joined the Wolong framework. As one of the world's oldest and most respected designers of industrial machinery, GE brings an extensive technical library and heavy-duty designs for processing fields including pulp and paper, cement, municipal water processing, mining and metal smelting, and downstream petrochemical pipelines.
This integration enables our engineering team to provide drop-in replacements for standard NEMA frames, custom vintage retrofits, and high-performance machines with high thermal margins and superior mechanical rigidity.
In 2015, CNE (China's largest research and production base for explosion-proof motor technology) joined Wolong. Nanyang Explosion-proof Group brings decades of specialized research, state-of-the-art explosion testing stations, and custom high-voltage explosion-proof technology.
Its products support strategic national defenses, nuclear power stations, heavy offshore oil rigs, and volatile deep-vein coal mines. Every motor manufactured under this division adheres to the strictest parameters of flame-propagation containment.
How we construct each electromagnetic subsystem to guarantee extreme reliability under persistent operational stress.
Our rotors feature the high-rigidity squirrel cage design. Cast aluminum rotors are produced using centrifugal aluminum casting or precision high-pressure die-casting techniques. This injects pure molten aluminum directly into the slots of the silicon steel sheet rotor core, creating a unified structure integrating rotor bars and end rings. This optimizes start-up torque, reduces slip losses, and maintains mechanical balance.
For high-capacity medium and high-voltage motors, copper bar rotors are utilized. We employ automated silver-alloy induction brazing and dynamic bar-locking configurations to handle high mechanical stresses and thermal shock during heavy starts. High-speed rotors are equipped with alloy retention rings to prevent centripetal expansion.
The stator coil is wound with double-insulated high-purity copper conductors wrapped in polyester film and reinforced with high-density glass fiber. The insulation system uses medium to high-mica tapes with high resin permeability.
After stator winding insertion, the entire assembly undergoes the Vacuum Pressure Impregnation (VPI) process. Under deep vacuum, moisture and microscopic air pockets are removed from the insulation layers, followed by high-pressure polymer resin injection. Once oven-cured, the stator transforms into a structurally solid, hermetically sealed mass. This provides class-leading thermal transfer, high dielectric strength, low partial discharge levels, resistance to humidity, and immunity to acidic chemical environments.
Our motor frames are engineered using multi-physics structural and thermodynamic simulations. We utilize high-tensile strength cast iron (or structural steel for custom configurations) featuring optimized external cooling fins.
This heavy structural redundancy ensures high natural frequency margins, isolating the machine from resonance, reducing operating vibration levels to a fraction of standard ISO thresholds, and protecting internal bearings from premature wear under high shaft loads.
The low-noise ventilation system consists of an aerodynamic fan cover body, an air guide cylinder, protective entry grills, and an acoustics silencer plate. The design minimizes noise from air shearing and turbulence.
The optimized side-inlet geometry avoids obstruction when installed adjacent to structural bulkheads. Built-in soundproofing materials absorb high-frequency windage noise. Ratings up to IP22/IP55 prevent debris ingress and accidental contact.
Unlocking access to highly regulated global markets via comprehensive international third-party certifications.
Operating electromagnetic motors in industrial zones presents high risks of electrical arcing, dust ignition, and gas penetration. Our manufacturing infrastructure is structured to comply with major testing regimens, removing import barriers and ensuring reliable safety.
ATEX (EU)
IECEx Global
CSA (North America)
UL Standard
EAC (CU-TR)
TestSafe (AU)
Our low, medium, and high voltage explosion-proof motors (such as the YB3, YBBP, and YBK3 series) are certified to meet ATEX Directive 2014/34/EU and the global IECEx system. They feature flameproof "d/db", increased safety "e/eb", non-sparking "n/nA/ec", and pressurized enclosure "p/px/py/pz" protection, allowing operations in volatile environments containing hydrocarbon gases, coal dust, or hydrogen.
For operations in North America, we supply NEMA frame motors (including the NEXP series) built to NEMA MG-1 standards. We perform efficiency testing, insulation resistance testing, starting current/torque testing, and acoustic vibration verification. These motors carry UL and CSA listings, verifying compliance with US and Canadian electrical safety codes.
TestSafe is a major certification body for mining equipment in the Southern Hemisphere. Our compliance allows our specialized mining motors to bypass regulatory trade barriers and operate in coal mines and heavy industrial sites across Australia.
Every manufacturing step is monitored under an ISO 9001-certified quality control system, supplemented by specialized explosion-proof production manufacturing qualifications. This ensures full traceability of steel heats, copper wire grades, bearing lots, and flameproof joint gap measurements.
How Shaanxi Nanfang Motor and Wolong are aligning electromagnetic drivetrains with future automation and sustainability trends.
Transitioning standard asynchronous motors into super-premium IE5 permanent magnet synchronous designs. Incorporating high-coercivity NdFeB magnets, these systems maintain efficiency levels even under partial load conditions, reducing energy draw across pump and compressor stations.
Integrating vibration, current signature, and winding temperature sensors directly into motor terminals. These feed real-time performance datasets to edge-computing models, detecting insulation degradation or bearing wear before they cause failures.
Optimizing materials usage to reduce raw copper, steel, and aluminum waste. We design motors for high recyclability and long service lives, helping global projects meet Scope 1 and Scope 2 emission reduction targets.
Customized electromagnetic drive architectures deployed across heavy industries globally.
We supply specialized explosion-proof medium and high-voltage motors (such as the YYZKK and YB3 series) for main oil transport pumps, gas compressors, water injection pumps, and refinery blenders. They are engineered to operate continuously in remote locations, desert environments, and offshore platforms with high salinity, high ambient temperatures, and corrosive hydrogen sulfide gas.
Underground operations require dust-tight, spark-proof, and flameproof drivetrains. Our Morley and Nanyang explosion-proof series (such as the YBK3 and TBVF series) run shearers, heavy conveyor belts, shuttle cars, and slurry pumps. Engineered to withstand heavy impacts and high start-up inertia, these motors are built with high-torque copper bar rotors.
For clean energy integrations, wind farms, and regional distribution nodes, we provide Distributed Synchronous Condenser Solutions. These systems maintain system inertia, inject reactive power, and regulate system voltage, safeguarding power grids against voltage drops caused by renewable energy fluctuations.
We provide water-cooled variable frequency motors (such as the YBBP series) and high-efficiency low-voltage designs for water supply systems, industrial blowers, aeration agitators, and mill roll-drives. These solutions optimize energy consumption through precise speed regulation.
Leveraging automated production lines and scale economies at our Shangyu and Nanyang manufacturing facilities.
Our manufacturing sites utilize digital factory architectures. High-speed CNC punching presses, automated winding machines, robotic laser welders, and large-scale VPI autoclaves operate in sequence to minimize human error and ensure mechanical tolerances are met precisely.
By raw material sourcing (silicon steel coils, electrolytic copper, structural shaft steel) within integrated manufacturing clusters, we reduce supply chain disruptions. This allows us to offer shorter production lead times and lower manufacturing costs compared to western motor builders, while maintaining high product quality.
Every motor undergoes full-load performance tests, no-load verification, temperature rise runs, vibration signature analysis, and insulation testing prior to packaging and shipment.
We work closely with global engineering procurement departments, EPC contractors, and OEMs to match complex design specifications.
We supply non-standard shaft configurations, double shaft extensions, custom foot mounting patterns, special terminal box positions, and retrofit adapter plates to mount our motors directly onto older existing gearboxes, compressors, or pumps.
We calculate custom voltage winding designs ranging from 220V up to 13.8kV, match winding configurations for specific variable frequency drive carrier frequencies, and design windings to withstand high transient start-up stresses.
We provide full drawing packages (2D/3D CAD models), torque-speed curves, thermal capacity limits, type test certificates, and witness testing protocols to speed up your internal engineering approval processes.
Supporting your operations globally with local field engineering support, testing facilities, and compliance verification.
With R&D centers in Germany, Austria, the UK, China, and Japan, alongside distributors in over 58 countries, we offer localized technical support. Our engineers assist with commission testing, motor alignment, startup parameters for soft-starters or variable frequency drives, and predictive maintenance checks.
All replacement parts, winding specifications, and bearing replacement guides are archived digitally, allowing our service teams to retrieve original build parameters and deliver compatible components quickly.
We provide compliance verification paperwork for custom imports. This includes detailed Certificates of Origin, custom laboratory test reports, localized safety stamps (ATEX, CE, EAC, CSA, TestSafe), and shipping documentation designed to expedite customs clearance and installation at site.
Direct answers from our senior engineering team to help you specify the right motor configuration.
A: Asynchronous induction motors utilize magnetic induction in the rotor, resulting in slip losses. Permanent magnet synchronous motors (PMSM) use rare-earth permanent magnets embedded in the rotor. This synchronizes rotor rotation with the stator field, eliminating slip losses and improving overall electrical efficiency by up to 5-10%, especially during partial-load operations.
A: Our explosion-proof motors are designed to contain any internal explosion within the enclosure without allowing flame propagation to the surrounding atmosphere. This is achieved through flameproof joint designs, tight gap tolerances, increased safety terminals, non-sparking cooling fans, and high-impact structural castings certified under ATEX/IECEx/CSA standards.
A: Yes. We customize motor windings to match the output voltage, switching frequency, and control algorithms of existing legacy VFD systems. We also install shaft grounding brushes or insulated bearings to prevent motor bearing currents from causing premature bearing failure.
A: Our standard industrial warranty covers 18 months from shipment or 12 months from commissioning. We support witness testing at our facilities or via digital streaming, providing detailed type test reports covering vibration analysis, torque-speed curves, noise levels, and winding temperature rises.
A: Lead times vary between 8 and 16 weeks depending on frame size, electrical requirements, and the certification level needed. By leveraging our automated manufacturing lines in China, we are often able to deliver custom motors faster than other manufacturers.
Ex-proof variable speed drives, safety brushless motors, and high-efficiency induction solutions.
NANFANG
