Explore our high-efficiency three-phase asynchronous, explosion-proof, and NEMA standard motor selections.
Production Lines
Global Export Destination Countries
Core Mechanical & Electrical Patents
Mega Industrial Projects Completed
Shaanxi Nanfang Motor Technology Co., Ltd serves as the official authorized distributor of Wolong. Founded in 1984, Wolong Electric Drive Group Co., Ltd. achieved its public listing on the Shanghai Stock Exchange in 2002 (code SH600580). Over nearly four decades of rapid industrial and technical development, Wolong has built an extensive global footprint, consisting of 3 primary manufacturing bases, 39 advanced factories, and 3 global R&D centers.
By focusing squarely on the design and manufacture of high-performance electric motors and complex drive control systems, Wolong executes a premium global brand strategy. This dedication has positioned it as a dominant force in R&D, technology engineering, manufacturing, and global sales.
Understanding the shifting demands of modern heavy industries, energy-saving mandates, and Foot-Mounted installation standards.
Worldwide energy regulations demand transitioning from IE3 to IE4/IE5 super high efficiency. Permanent Magnet Synchronous Motors (PMSMs) with Variable Speed Drives (VSDs) are fast becoming the industry standard to minimize carbon footprints.
Industrial applications in mining, petrochemicals, and heavy manufacturing depend on rigid foot-mounted configurations (IM B3) to handle extreme vibration, torque shocks, and alignment maintenance over extended operating lifespans.
Procurement directors require fully integrated supply chains that balance scale with strict certifications like ATEX, IECEx, UL, and DNV Marine. Ensuring resilience against raw material and geopolitical disruptions is paramount.
How Wolong incorporated heritage Western engineering with China's high-efficiency manufacturing ecosystem.
WOLONG acquired 97.94% of the Austrian ATB Group, one of Europe's top three motor manufacturers. This acquisition integrated the Morley brand, which brings over 130 years of underground coal mining expertise. Morley is widely recognized for manufacturing heavy-duty explosion-proof motors that handle the most severe underground mining environments. Additionally, Laurence Scott joined the group, providing high-spec machinery, such as low-starting-current motors for naval and power utilities.
With a centurial footprint, Brook Crompton joined the Wolong Group, further strengthening its capabilities in low, medium, and high-voltage AC motors. Brook Crompton is famous for its "W" and "10" series motors, built specifically for hazardous, highly corrosive, and extreme ambient industrial operations, while integrating speed drive packages for seamless speed regulation.
Operating since 1882, Schorch joined Wolong in 2011, bringing its world-class drive systems serving petrochemicals, oil and gas, steel production, and municipal infrastructure. Meanwhile, Wolong has partnered with OLI, the global leader in industrial vibration motor technology (MVE series) since 1999, to deliver precision vibration solutions globally.
In 2015, China's largest explosion-proof research and manufacturing base, Wolong Electric Nanyang Explosion-proof Group Co., Ltd. (CNE), officially joined Wolong. In 2018, General Electric's (GE) commercial and industrial motor division became part of Wolong, providing substantial support in medium-to-large high-voltage motor engineering, and solidifying Wolong's presence in international oil, gas, chemical, power, and marine markets.
Visual presentation of our overseas acquisitions and global brand collaborations.
Wolong operates state-of-the-art motor and drive control R&D institutes in Europe (Austria and Germany), Japan, and mainland China. With the core Central Research Institute situated in Shanghai, we continuously pioneer breakthroughs in permanent magnet efficiency, variable frequency optimization, and explosion-proof containment design, keeping our products at the forefront of the industry.
By utilizing a multi-brand portfolio featuring Nanyang Explosion, Brook Crompton, Morley, Laurence Scott, Schorch, and ATB, we offer localized engineering support and cross-border project management. This synergy makes us the supplier of choice for EPC contractors and end-users in oil, petrochemical, and mining sectors.
Ensuring steady supply and top-tier product quality through automated machinery, vertical integration, and deep testing protocols.
Our digitalized assembly plants combine automated stator winding, high-pressure die casting, precision multi-axis CNC machining, and automated test benches. This integrated approach ensures consistent build quality and reduces lead times for complex, customized foot-mounted industrial motors.
With direct control over raw materials—from high-grade electrical lamination silicon steel to custom bearing assemblies from premium global brands—our manufacturing processes remain highly resilient against global supply chain shocks.
Key Quality Gates Include:
- 100% computerized rotor dynamic balancing tests.
- In-process Vacuum Pressure Impregnation (VPI) monitoring.
- Fully loaded temperature rise, noise level, and vibration signature tests.
- ATEX/IECEx certified laboratory verifications.
A deep look at our motors' core structural components, engineered for maximum durability and thermal control.
Our squirrel-cage rotors feature centrifugal cast aluminum or advanced copper bar construction. Pure molten aluminum is poured using centrifugal or high-pressure die casting to ensure slot integrity. For high-output applications, dynamically balanced copper bars are joined using automated induction brazing. High-speed models include protective retaining rings to prevent centripetal deformation.
Coils are wound with high-purity enameled copper wire insulated with polyester film and high-mica-content tape. Following stator assembly, the winding undergoes Vacuum Pressure Impregnation (VPI) using solventless epoxy resin. This process eliminates internal air bubbles, providing excellent dielectric strength, moisture proofing, and thermal endurance (Class F/H).
Constructed from high-tensile gray cast iron or structural steel, our motor frames are designed using multi-physics finite element analysis (FEA). This maximizes cooling fin surface area while maintaining mechanical stiffness to isolate vibrations, withstand heavy shock loads, and keep alignments secure.
Comprising a lightweight acoustic hood, airflow guide cylinder, and integrated silencer plate. The side-entry air design minimizes pressure drops and flow turbulence. By lining the interior with sound-damping materials and maintaining an IP22/IP23 rating, we protect operators while maintaining high heat dissipation rates.
Our motors carry the approvals required for seamless integration into high-risk industrial facilities globally.
Nemko / ATEX
CSA Group
CE Conformity
China Compulsory
SABS South Africa
TestSafe
ISO 9001 Ex Manufacturing: Our production bases conform strictly to the ISO 9001 quality management framework. Maintaining these international standards acts as the foundation for our manufacturing, engineering, and commerce activities.
NEMA Standard compliance: To verify compliance with NEMA mechanical and electrical characteristics, our motors undergo strict efficiency testing, insulation resistance checks, locked-rotor torque validation, and dynamic vibration testing. Low-voltage models carry UL and CSA certifications.
IECEx & ATEX standards: For both low-voltage and high-voltage explosion-proof configurations, our products carry IECEx and ATEX markings, ensuring smooth clearance and commissioning inside EU countries and other safety-regulated jurisdictions.
TestSafe certification: Our products have achieved TestSafe approval, the key certification required for coal mining electrical products in the Southern Hemisphere. This credential eases entry into Australia's mining sector and surrounding global markets.
Delivering high-reliability torque and motor control across the world's most demanding environments.
Powering continuous-duty pumps, air compressors, and mixers in refineries and offshore platforms. Our explosion-proof (Ex d / Ex de) structures ensure safety in gas-laden environments.
Built for continuous operation in dusty underground mines and open-pit conveyors. Our robust foot-mounted (IM B3) cast iron housings are engineered to resist heavy vibrations and high impact.
Providing corrosion-resistant high-torque solutions for winches, ship thrusters, and port cranes. With DNV Type Approval, these motors withstand high humidity and saline atmospheres.
Explore our high-voltage, marine-certified, variable frequency, and non-sparking electrical equipment line.
Direct technical answers addressing queries from design engineers, procurement heads, and quality managers.
IM B3 is the standard designation for a foot-mounted motor where the machine stands on feet integrated with or bolted to the frame. IM B5 designates a flange-mounted motor without feet, where the motor is supported by the driving flange. IM B35 combines both mounting types, featuring feet and a drive-end flange, which is ideal for high-vibration applications requiring additional support.
Our explosion-proof motors (such as the YBXKK, YBBPX, and WEX3 series) undergo certification testing in approved laboratories. Compliance is maintained through tight flameproof joint tolerances, rugged housing designs that contain internal pressure, thermal insulation protections, and regular quality audits of our production plants by European notified bodies.
We offer customizations for challenging environments, including Class H winding insulation, anticondensation space heaters, PT100 temperature sensors, insulated bearings to protect against VFD-induced currents, IP56/IP66 enclosure ratings, corrosion-resistant paints, and special shaft extensions.
Marine installations require type-approval certificates from international classification societies. Our YQ marine-duty motors carry DNV, ABS, or BV approvals, validating their resistance to salt spray corrosion, high humidity, and structural tilt.
Lead times vary depending on frame sizes and customizations. Standard low-voltage high-efficiency motors (such as the WE3 and YE4 series) are typically stocked or shipped within 4 to 6 weeks. Customized high-voltage induction or non-sparking motors (like the YWKK/YWKS series) require between 12 to 16 weeks to allow for detailed engineering review and testing.
NANFANG
