Premium selection of low-voltage, high-voltage, and explosion-proof synchronous & asynchronous industrial motors.
Shaanxi Nanfang Motor Technology Co., Ltd. is the authorized distributor of Wolong. Wolong Electric Drive Group Co., Ltd. was founded in 1984 and successfully listed on the Shanghai Stock Exchange in 2002 (code SH600580). Over more than three decades of rigorous expansion, Wolong has established 3 global manufacturing bases, 39 state-of-the-art factories, and 3 world-class R&D centers globally.
Wolong focuses on the precise manufacture of electric motors and complex drive control systems. Committed to a global brand strategy, Wolong acts as a market leader in R&D, production, technology integration, and sales in the international market, ensuring customers receive unparalleled service and premium equipment.
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Aligning motor engineering with strict international safety protocols and maximum performance requirements.
Different kinds of Ex certificates for your specific industry and market demands, guaranteeing safety in Zone 1, Zone 2, Zone 21, and Zone 22 hazardous environments.
IE5, IE4, and IE3 efficiency classes available. We also provide specialized permanent magnet (PMSM) types to minimize total cost of ownership (TCO) and reduce carbon footprints.
Rich product lines covering low-voltage and high-voltage motors designed for fans, pumps, compressors, and specialized hazardous area heavy machinery.
Through strategic acquisitions, Wolong has integrated a century of motor engineering wisdom from the world's most respected brands.
Wolong has established advanced motor and drive control R&D centers in China, Europe, and Japan, with a central research institute in Shanghai. It is committed to research in leading motor and control technologies, with several product lines setting international performance benchmarks.
Accumulated with abundant assets and brilliant experience in manufacturing, WOLONG successfully acquired 97.94% of the Austrian ATB Group (ATB motor), one of the three major European motor manufacturers. This acquisition brought the historical brands Morley (with 130 years of underground coal mining expertise) and Laurence Scott (renowned for low starting current nuclear-grade equipment and naval generators) under Wolong's direct technology portfolio.
Brook Crompton Motors joined the Wolong Group, bringing over a century of mastery in design and technology. Pioneering in energy-efficient motors, Brook Crompton has developed comprehensive ranges of low, medium, and high-voltage AC motors, including the premium "W" and "10" series suitable for hostile, harsh, and hazardous operating settings.
Schorch, established in 1882, has set the standard for heavy-duty German engineered drive systems. Collaborating with strategic global partners, Schorch provides motors for critical projects in oil & gas, chemical processing, power generation, water management, steel fabrication, and public infrastructure tunnels.
For vibration motors (MVE) and industrial vibrators, OLI brand commands the largest global market share. Dating back to 1999, Wolong and OLI established joint business operations in China, consolidating their market-leading position in bulk materials handling and processing technology.
In 2015, China's largest explosion-proof motor scientific research and manufacturing base, CNE (Nanyang Explosion-Proof Group), officially joined Wolong. Providing rugged high-voltage, low-voltage asynchronous, and synchronous explosion-proof motors, Nanyang CNE is the premier drive supplier for Chinese oil, coal, chemical, metallurgical, and nuclear energy installations.
In 2018, General Electric's commercial and industrial motor division joined Wolong. As a legendary manufacturer of heavy duty machinery, GE's integration has provided Wolong with robust design systems, technology patents, and sales networks for pulp & paper, cement, metallurgy, wastewater, and oil petrochemical complexes globally.
Analysis of energy efficiency regulations, grid demands, and technical advancements in industrial drive design.
Under international standards such as IEC 60034-30-1, the electric motor efficiency landscape is divided into clearly defined classes: IE1 (Standard), IE2 (High), IE3 (Premium), and IE4 (Super-Premium). As countries globally legislate stricter Minimum Energy Performance Standards (MEPS) to combat climate change, transitioning to IE4 motors has become mandatory for heavy industries.
Industrial electric motor systems account for approximately 70% of total electrical energy consumed within manufacturing plants. Upgrading to IE4 efficiency reduces internal motor losses by 15% to 20% compared to IE3 units. This translates to direct operational cost savings, lower thermal stress on motor components, and significantly longer operational lifespans for critical drives.
China's industrial motor manufacturing sector has transitioned from large-scale assembly lines to smart Factory 4.0 centers. By integrating industrial IoT, automated winding machines, laser precision testing, and high-grade raw material supply chains, Chinese exporters can deliver world-class IE4 motors with shortened lead times.
Our supply chain resilience is rooted in localized integration. We source premium cold-rolled silicon steel sheets, high-purity copper wires, and heavy duty cast-iron housings within structured industrial hubs. This layout protects global clients from supply shocks, controls pricing fluctuations, and ensures consistent quality control throughout production.
Modern procurement executives evaluate electric motor investments through a Total Cost of Ownership (TCO) lens. While the initial purchasing price represents only 2% to 3% of a motor's lifecycle cost, electricity consumption accounts for over 95%. Investing in Wolong's IE4 super-premium efficiency systems typically yields full amortization within 12 to 18 months, depending on local energy tariffs.
Additionally, modern global enterprises require drives that offer dual-frequency capabilities (50Hz/60Hz), broad voltage ranges, and full compatibility with Variable Frequency Drives (VFD) for optimized fluid dynamics in pumps, fans, and compressors.
A deep dive into the mechanical and electrical construction that ensures the longevity and safety of our motors.
The rotor features the squirrel cage design, with cast aluminum rotors being widely utilized. These rotors are produced using either centrifugal aluminum casting or die-casting techniques, where molten pure aluminum is poured into the slots of the rotor core, resulting in a single-piece construction that integrates the rotor bars and end rings.
The structural integrity and manufacturing process of cast aluminum rotors guarantee the motor rotor's reliability, and also endow the motor with outstanding torque properties. For larger capacity motors, copper bar rotors are employed, which benefit from dependable bar securing and end ring welding procedures. Additionally, the protective ring design of high-speed motors further ensures the reliable operation of the copper bar rotor.
The coil is crafted from polyester film and reinforced with glass cloth, utilizing either low-powder mica tape with a high mica content or medium-powdered mica tape with an abundance of mica. Following the VPI (Vacuum Pressure Impregnation) process, a pristine white coil emerges from the production line. After the billet is extracted from the wire, it proceeds through the VPI process to transform into a finished unit.
The winding and insulation are meticulously engineered to provide exceptional electrical performance, mechanical strength, resistance to moisture, and thermal stability under continuous peak loads.
The motor frame employs a fully digital platform for structural and fluid multi-physics field simulations. This simulation platform retains the original patent's structure and design, utilizing mature, high-strength cast iron (or steel as an alternative). The frame boasts exceptional structural redundancy, outstanding heat dissipation properties, and ample inherent frequency isolation margins for the entire machine.
It is engineered to endure significant mechanical shocks, maintain a superior vibration level, and ensure a lower temperature increase in the motor, directly enhancing bearing life and overall service intervals.
The low-noise fan cover system comprises a fan cover body, an air guide cylinder, a protective window, and a silencer plate. Its compact structure and lightweight design facilitate vibration reduction. The air inlet is situated on the side, which optimizes the avoidance of obstacles behind the motor, minimizing adverse effects on ventilation and reducing noise caused by energy loss during propagation path changes.
The system also incorporates sound-absorbing materials that absorb noise, thereby lowering the overall motor noise. Additionally, the fan cover is rated IP22, ensuring that hands cannot come into contact with the fan.
Full compliance with international standards, permitting seamless integration across global industrial networks.
Nemko / ATEX
CSA Standard
CE Conformity
CCC Standard
SABS Standard
TESTSAFE Standard
WOLONG adheres to a comprehensive marketing strategy for the electric motor and the entire industry chain, securing the certifications required to enter international markets:
WOLONG drive solutions operate in highly critical process industries across the globe.
As a globally recognized manufacturer of motors and drive solutions, WOLONG operates 39 manufacturing facilities and 4 research and development (R&D) centers across countries including China, Vietnam, the United Kingdom, Germany, Austria, Italy, Serbia, Mexico, and India.
WOLONG's diverse range of motors finds application across a multitude of industrial sectors, serving equipment such as industrial fans, high-pressure water pumps, multi-stage compressors, and heavy engineering machinery. These motors are integral to key industries including:
Frequently asked technical questions regarding the implementation and operation of IE4 high-efficiency motors.
High-efficiency, permanent magnet, and flameproof options engineered to match your specifications.
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