Select certified three-phase asynchronous and synchronous motors for hazardous zones, marine hulls, and heavy-duty machinery.
Shaanxi Nanfang Motor Technology Co., Ltd is the authorized global distributor of Wolong. Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong Electric Drive Group Co., Ltd has established itself as an unparalleled titan in global motor development and motion control systems.
With 3 major global manufacturing bases, 39 ultra-modern factories, and 3 global R&D centers, Wolong serves heavy industries across the globe. Through strategic international integration, Wolong holds legendary motor brands including Brook Crompton, Morley, Laurence Scott, Schorch, ATB, and OLI, ensuring unmatched technological redundancy and deep industry expertise.
We provide heavy industry with optimized drivetrain solutions that combine extreme mechanical safety, low power consumption, and regulatory compliance.
Full spectrum explosion protection certificates designed for global regulatory markets. Guaranteed safety operations in Zone 1, Zone 2, Zone 21, and Zone 22.
We supply induction motors reaching premium IE3/IE4 levels and ultra-premium IE5 levels, including permanent magnet synchronous (PMSM) technologies.
Covers low-voltage, high-voltage, wound rotor, slip ring, marine grade, variable frequency, and positive pressure brushless excitation motor structures.
By acquiring historical European brands, Wolong inherited over a century of motor design archives and specialized engineering capabilities.
Wolong acquired 97.94% of Austria's ATB Group, one of Europe's premier motor developers. The acquisition brought Morley (130-year history in hazardous coal mining motors) and Laurence Scott (British specialist in nuclear power station motors and low starting current technology) under the Wolong umbrella.
Schorch (Germany, founded 1882) joined Wolong, strengthening heavy-duty motor technology for petrochemicals, pipelines, and steel rolling. Parallel Integration of Brook Crompton Motors expanded high-performance W & 10 series low/medium voltage motors into EU and global standard systems.
In 2015, CNE (Nanyang Explosion-Proof Group) joined Wolong, establishing the largest Ex research base in Asia. In 2018, GE Industrial Motors Division entered a strategic transaction with Wolong, creating massive tech integration for heavy industrial oil, gas, power plant, and material handling systems.
In partnership with OLI since 1999, Wolong commands major market share in electric vibration motors (MVE series) and Ex-rated vibration sensors. This allows us to supply complete industrial screening and material handling systems integrated with predictive maintenance hardware.
Every internal motor component is engineered through multi-physics simulations to withstand massive thermal cycles, chemical atmospheres, and structural shocks.
Featuring cast aluminum squirrel cage rotors produced using centrifugal casting or advanced high-pressure die-casting. This structure integrates the rotor bars and end rings into a solid, durable single unit. Centrifugal casting guarantees the exclusion of micro-porosity, optimizing rotor electrical conductivity and ensuring starting torque performance.
For large high-voltage motors, custom copper bar designs are welded with end rings under computerized induction heating processes. Advanced carbon-fiber retaining rings are equipped on high-speed configurations to control centrifugal deformation.
Wound using heavy-build polyesterimide or polyesterimide-overcoated polyamide-imide wire insulation. Coil structures are reinforced with glass-backed polyester film and wrapped with premium, low-powder or medium-powder mica tape to ensure maximum dielectric properties.
The entire core assembly undergoes a state-of-the-art Vacuum Pressure Impregnation (VPI) cycle. Standard double-VPI treatment is applied to high-voltage classes, ensuring bubble-free resin distribution, superior mechanical strength, moisture rejection, and an H-class thermal endurance index.
Engineered through fully digitized platform structural modeling and internal fluid-thermal simulations. Built utilizing high-tensile gray cast iron or welded structural steel (frame sizes > 450).
Our structural configuration features excellent safety margins to suppress natural frequencies, preventing mechanical resonance under variable frequency drive (VFD) operations. Deep-cooling fin structures optimize air velocity across the frame surface, keeping bearing operating temperatures down for extended grease lifetimes.
The high-efficiency cooling assembly includes a dynamic wind guide, custom noise attenuator plates, and safety mesh windows. Built to meet IP22/IP55 requirements, the design prevents accidental physical contact while maintaining optimal airflow.
By designing air intake channels to run on the perimeter rather than directly at the rear, we eliminate back-reflection noise. Integrated acoustic insulation liners absorb aerodynamic vortex noise, allowing quiet operation even at high rotation speeds.
Every industry demands specific operational performance. We configure our motors to match the exact physical challenges of each application sector.
Our WEBP3 and YBXKK explosion-proof series provide certified operations in atmospheres containing explosive gases. Configured with flameproof enclosures (Ex d) or increased safety (Ex e) structures to handle refinery pumps, gas compressors, and offshore drilling platforms.
Represented by the Morley and YBSD series, our conveyor and tunnel boring machine motors feature high starting torque (high slip rotor designs), structural shock resistance up to 5G, and water-jacket cooling options to run safely in dust-heavy underground tunnels.
The YQ series of low voltage marine motors are built to resist salt-spray corrosion, using double-epoxy varnishes, rustproof hardware, and IP56 sealing. Fully certified by major marine classification registries including DNV, ABS, LR, and BV.
Expanding your operations globally requires seamless regulatory compliance. Wolong electric motors carry all major international certificates, ensuring smooth customs clearances and insurance approvals.
Through automation and standardized processes, we deliver high-performance motors with shorter lead times and consistent quality control.
Our production facilities utilize automated winding and insertion lines. Robotized coil insertion ensures uniform slot fill factors and eliminates wire scraping, reducing electrical failure rates.
By securing direct relationships with domestic raw material suppliers, we guarantee access to high-grade copper and cold-rolled silicon steel sheets (0.35mm and 0.5mm) even during global supply chain fluctuations.
Every motor undergoes load tests, rotor balance checks, and insulation insulation strength diagnostics in our automated testing center. All performance parameters are recorded to provide full tracking histories.
As energy efficiency standards tighten worldwide, industrial motor tech must evolve. We are focusing on two major developments: ultra-premium efficiency (IE5+) and integrated smart diagnostics.
Our WEPM series uses permanent magnet synchronous technology to significantly reduce rotor copper losses, providing high energy efficiency even under partial load. Additionally, we are building IoT-connected Ex-proof vibration and temperature sensors directly into motor frames, enabling real-time condition monitoring to prevent unplanned downtime.
Purchasing heavy electric motors requires careful evaluation of total cost of ownership (TCO), electrical compatibility, and mechanical engineering support.
Ensure your chosen motors are rated for VFD operation. Wolong motors utilize insulated non-drive end bearings (such as hybrid ceramic designs) to eliminate rotor shaft currents and prevent premature bearing failure.
An IE4 or IE5 motor typically pays for its price difference within 12 to 18 months in continuous operation. Our engineering team provides energy savings reports to help calculate payback periods before purchase.
Standard motors often require modification for specific installations. We offer custom shaft extensions, special terminal box positions, thermal sensors (PT100), and anti-condensation heaters to match your mechanical specifications.
Through Wolong’s global service offices, Shaanxi Nanfang Motor provides technical support, local warranty coverage, and engineering design services. Our regional centers carry spare parts inventories and offer field repair capabilities to minimize operating downtime.
Whether you need Ex-proof compliance updates, replacement bearing alignments, or energy audits, our team is equipped to support your operations worldwide.
Find direct answers to common questions about motor selection, ex-proof classifications, and purchasing procedures.
Custom-engineered high-voltage synchronous, slip-ring, non-sparking, and multi-speed motors built for industrial operations.
NANFANG
