Premium performance electric drives custom-designed for heavy duty hydrostatic pump integrations, high vibration environments, and explosive gas atmospheres.
Shaanxi Nanfang Motor Technology Co., Ltd is the authorized premier distributor of Wolong Electric Drive Group Co., Ltd. Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has transitioned from a localized manufacturing business into an undisputed global pioneer of electric motors, motion controls, and drive systems.
Through decades of calculated technical evolution, Wolong operates a dynamic network of 3 key global manufacturing bases, 39 advanced manufacturing facilities, and 3 global R&D institutions. The group is dedicated to providing specialized motor-control architectures designed for extreme heavy-duty environments, including offshore marine projects, high-temperature operations, chemical processing, and mining industries.
Integrating world-renowned expertise to construct structural drive systems capable of powering hydrostatic pumps and complex transmissions globally.
In 2011, Wolong acquired a 97.94% stake in the Austrian ATB Group, one of Europe's top three motor manufacturers. This acquisition brought in Morley Motors, a benchmark in heavy mining conveyor drives with over 130 years of history, and Laurence Scott, famous for low starting current configurations and nuclear/naval marine grade equipment.
Brook Crompton stands as a venerable and profoundly skilled participant within the electric motor sector, boasting over a century of mastery. Known for leading energy-efficient advancements, they introduced the premium Brook Crompton “W” and “10” series, specifically engineered to operate in hazardous, highly corrosive hydrostatic transmission setups.
Schorch (established 1882) defines standards for high-output driving systems utilized across oil & gas and marine test stations. OLI Vibration Motors, integrated through partnerships since 1999, stands as the global leader in high-frequency, explosion-proof vibration sensors and industrial electric shaker systems.
In 2015, Wolong Electric Nanyang Explosion-proof Group (CNE), China's largest explosion-proof motor scientific base, joined the fold. In 2018, General Electric's (GE) commercial and industrial division formed a strategic partnership with Wolong, offering huge support in massive heavy-duty mechanical engineering.
Explaining the mechanical and electrical features that enable our motors to drive high-torque hydraulic pumps under constant pressure fluctuations.
For standard duty hydrostatic pumps, our cast aluminum rotors are manufactured using centrifugal aluminum casting or precision die-casting techniques. Pure molten aluminum is poured directly into the slots of the laminated rotor core, yielding an integrated structure where the rotor bars and end rings form a single unit. This design ensures exceptional torque profiles and eliminates mechanical weak points.
For high-capacity, high-torque applications, copper bar rotors are deployed. These assemblies feature copper bars welded to the end rings using advanced silver brazing technology. High-speed motors are further reinforced with non-magnetic steel protective rings, preventing centrifugal displacement of the copper windings at speeds up to 3600 RPM.
Our stator coils are insulated using polyester film combined with high-mica content glass cloth tapes. Once wound, the stator undergoes Vacuum Pressure Impregnation (VPI) with solventless epoxy resin. The VPI system removes air and moisture from the stator pack, replacing voids with a solid, thermally conductive resin block.
This process provides excellent moisture resistance, high mechanical stiffness to withstand start-up torque, and class H thermal performance, protecting the windings against severe insulation breakdown.
Using a fully digital simulation platform, our engineers run structural and fluid multi-physics simulations on the cast iron and structural steel frames. This simulation ensures that the physical dimensions retain structural safety margins to absorb mechanical shocks from sudden hydraulic blockages.
Furthermore, the cooling fin placement is optimized for heat dissipation, ensuring a low thermal delta and preventing heat transfer back to the hydraulic pump seal interface.
The low-noise ventilation system integrates a fan cover body, air guide cylinder, protection window, and silencer plate. Air intake is positioned laterally, optimizing ventilation paths even when the motor is installed close to bulkheads or equipment covers.
Internal noise-absorbing materials reduce fan shear noise. With an IP22 rating on the inlet grilles, human fingers or foreign particles cannot contact the high-speed fan blade, ensuring operation safety.
Embracing permanent magnet technologies, advanced digital twin monitoring, and eco-sustainable designs to meet next-generation industrial demands.
The industry is shifting from traditional induction motors to Permanent Magnet Synchronous Motors (PMSM) like the WEPM series. By utilizing high-coercivity NdFeB magnets, these drives reduce rotor losses, achieving IE5 energy efficiency profiles. This translates to fuel savings and reduced CO2 emissions in heavy machinery.
Integrating OLI-compatible vibration sensors and thermal monitoring systems directly into the motor frame allows for real-time telemetry. Data streams are processed by machine learning algorithms to predict bearing wear, stator insulation degradation, and winding overheating, preventing unexpected downtime.
We are reducing the carbon footprint of motor manufacturing by sourcing recycled silicon steels, low-VOC insulation varnishes, and optimizing frame shapes to reduce raw iron usage. This ensures compliance with EU Ecodesign directives while maintaining mechanical performance.
Tailored electro-hydraulic drive configurations designed to survive and perform in the world's most demanding physical sectors.
Operating off-shore requires resilience to saltwater corrosion, high ambient humidity, and explosive gas pockets. Our NEXP and YQ series motors provide dual protection: corrosion-resistant offshore epoxy paint systems alongside Ex d (flameproof) or Ex de (increased safety) certification.
These motors are coupled with axial piston hydrostatic pumps for offshore drilling rigs, mud pump stations, and subsea deepwater winch controls. The DNV Type Approval ensures safety compliance for maritime projects.
Mining operations face high ambient dust levels, low ventilation, and mechanical impacts. Building on Morley’s technical legacy, our YBS series conveyor motors feature heavy steel constructions, dust-ignition proof ratings, and water-cooled jackets to maintain safe surface temperatures.
These drives handle the high starting torque of loaded longwall conveyors and heavy hydrostatic shuttle cars, reducing mechanical strain during starting cycles.
Our manufacturing processes are verified by international testing agencies to ensure global regulatory compliance.
ISO 9001 Quality Framework: Every step of production, from raw steel selection to final dynamic balance testing, is logged and traceable. This strict process control guarantees consistent quality across our 39 global factories.
NEMA Standard Testing: Motors intended for the North American market undergo testing for insulation resistance, starting current, torque under load, and vibration limits, securing UL and CSA listings.
IECEx & ATEX Standards: For hazardous zones (Zone 1, Zone 2, Zone 21, Zone 22), our motors are designed with flameproof enclosures (Ex d) or dust-ignition-proof shells (Ex t). These certifications allow for direct deployment across the European Union and global markets.
TESTSAFE Standard: Testsafe certification allows our heavy-duty mining motors to enter Australia. This compliance ensures that Wolong products meet local safety requirements, offering a reliable choice for regional mining operators.
Our main manufacturing centers in China operate under a Industry 4.0 framework. High-speed automated stamping machines process raw electrical steel laminations with micron-level precision, reducing magnetic losses. Stator winding processes are semi-automated, ensuring uniform winding tension and insulation coverage.
By vertically integrating core manufacturing processes—including wire drawing, lamination stamping, casting, and VPI treatments—we maintain control over lead times and quality. Strategic raw material sourcing helps stabilize pricing against fluctuations in copper and steel markets, ensuring competitive rates for OEM contracts.
This manufacturing base is backed by global logistics links. Shaanxi Nanfang Motor Technology manages shipping, custom export packaging, and international trade clearance, facilitating delivery to ports worldwide.
We align with global corporate supply chains by adhering to transparent procurement frameworks.
We provide step-by-step engineering support, offering raw 3D CAD files, shaft load limits, torque curves, and thermal models. This collaborative approach helps verify fitment and mechanical compatibility before production begins.
We support customer-specific Quality Plan protocols. Factory Acceptance Testing (FAT) options include witness testing for insulation resistance, thermal rise curves under load, dynamic balancing, and noise level measurements.
Our supply chain complies with RoHS environmental directives, REACH chemical controls, and standard labor safety policies. We prioritize carbon-reduction programs and resource conservation throughout our manufacturing footprint.
Find answers to common questions regarding hydraulic pump compatibility, certifications, VFD usage, and custom modifications.
You must specify the pump's displacement (cc/rev), maximum operating pressure (bar/psi), and target input speed (RPM). These metrics determine the starting torque and peak horsepower requirements. You should also define the duty cycle, ambient temperature range, and site-specific certifications (such as ATEX, IECEx, or NEMA).
VPI removes air voids inside the stator core and replaces them with solventless insulating resin. This process increases the winding's mechanical strength against magnetic vibrations, enhances heat dissipation to the outer frame, and protects against moisture or chemical contamination in wet environments.
Yes, our motors, including the TBVF and WEPM series, are designed for VFD operation. They feature corona-resistant wire insulation systems and can be equipped with insulated non-drive end bearings or shaft grounding rings to prevent electrical bearing damage caused by common-mode voltages.
Our explosion-proof ranges (such as NEXP, YE3, and YBX3 series) meet ATEX and IECEx standards for Gas Group IIA, IIB, and IIC applications, and Dust Group IIIA, IIIB, and IIIC environments. They are certified for Zone 1, Zone 2 (gas hazards) and Zone 21, Zone 22 (combustible dust hazards), covering most industrial safety requirements.
PMSM designs use neodymium magnets inside the rotor, eliminating induction rotor current losses. This allows the motor to run cooler and maintain higher efficiency even at partial loads, reducing electrical consumption compared to standard induction motors.
Explore our specialized heavy-duty motor line-up, featuring DNV-approved marine motors, high-voltage wound rotor designs, and robust flameproof water pump systems.
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