Explore our core range of medium-voltage, low-voltage, explosion-proof, and synchronous AC motors engineered for severe industrial conditions.
The standard baseline for power, safety, and reliability in heavy-duty machinery systems.
High-power AC motors serve as the workhorses of global heavy industries, consuming over 60% of all industrial electricity worldwide. As international regulations enforce stricter carbon footprints and sustainability frameworks, the global industrial sector has shifted from standard IE3 induction motors toward IE4 and IE5 super-premium efficiency systems. These systems are critical for high-load, continuous-run infrastructure projects, such as large-scale extraction, fluid dynamics pumps, compressors, and ventilation systems. Our solutions enable substantial operational savings and emissions reductions, aligning with global net-zero compliance targets.
Global procurement teams now require motor designs that minimize downtime, feature diagnostic sensor integration, offer universal mounting capabilities, and reduce starting current draw.
Variable frequency control (VFD) compatibility, permanent magnet rotor designs, and robust cooling methods are critical requirements for process automation.
Operations in flameproof environments, underground mining, and hazardous petrochemical installations demand certified safety designs under IECEx, ATEX, and EAC codes.
Bridging global industrial applications with Wolong's massive manufacturing and technology capabilities.
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 in 2002 (code SH600580). After more than 30 years of development, Wolong has 3 manufacturing bases, 39 factories, and 3 R&D centers worldwide now. Wolong has always focused on the manufacture of motors and control systems, committed to a global brand strategy, making Wolong a leader in R&D, technology, process, manufacturing, and sales in the global market.
Through Nanfang Motor Technology, global EPC contractors and system integrators gain direct, certified engineering access to this robust international technology ecosystem, ensuring compliant configurations, documentation, and shipping pathways.
Providing custom, energy-efficient power drives with advanced certification frameworks.
We supply diverse explosion-proof motor certifications, including flameproof, increased safety, and non-sparking configurations designed for hazardous areas.
We provide standard low-voltage and high-voltage three-phase asynchronous motors in IE3, IE4, and IE5 efficiency levels, alongside customized permanent magnet synchronous designs.
Our comprehensive selection of frame sizes, mounting styles, and protection ratings allows us to design and deliver tailored motors for severe process applications.
Leveraging century-old global brands integrated into the Wolong industrial manufacturing network.
Wolong has established motor and drive control R&D centers in China, Europe, and Japan, and established a central research institute in Shanghai. It is committed to the research of leading technologies in the field of motor and control technology. Some products have reached the international leading level.
Wolong owns leading domestic brands such as Nanyang explosion, as well as internationally renowned century-old brands, such as Brook Crompton, Morley, Laurence Scott, Schorch, ATB, etc., and has a high brand reputation in the fields of oil and gas, petrochemicals, mining, etc.
As a well-known domestic motor manufacturer, Wolong has significant advantages in explosion-proof performance, reliability, durability, etc., and are widely used in dangerous environments such as petroleum, chemical industry, coal mines, etc., and have passed the explosion-proof certification of national authoritative agencies and international fields: ATEX, IECEx, CU-TR, etc.
Tracing Wolong's acquisitions of world-class motor engineering innovators.
Accumulated with abundant assets and brilliant experiences in manufacturing, WOLONG started to reach for higher attempts. To be the leading manufacturer of AC motors & drives worldwide, WOLONG strove to acquire the overseas groups.
In 2011, WOLONG company has acquired strong technical and technological supports. WOLONG’s holdings group successfully acquired 97.94% of the Austrian ATB Group (ATB motor), one of the three major European motor manufacturers and become the actual controller of the ATB Group, and has become a world-renowned and high-strength global motor manufacturer. ATB motor group included the brand Morley in mining industry and Laurence Scott.
Both are excellent in the motor manufacturing. Morley motor, with its nearly 130-year history, has been closely linked to underground coal mining. Currently, the Morley brand is highly esteemed in the global underground coal market and has become synonymous with quality, power, and reliability. It is a manufacturer that can provide the mine motor with high-specification, high-performance, high-quality electrical equipment for the global market.
Laurence Scott, the pioneering company that supplied motors for British nuclear power plants, is currently renowned for manufacturing equipment with low starting currents and also equips British naval vessels with generators. Following its acquisition by WOLONG, the company has been honored with the Queen's Award for three consecutive years.
Furthermore, Brook Crompton Motors joined WOLONG group as well. Brook motor stands as a venerable and profoundly skilled participant within the electric motor sector, boasting over a century of mastery in the technology and design of electric motors. With its extensive background in technological innovation and design, Brook Crompton Motors leads the way in motor technology advancements and pioneers in the creation of energy-efficient motors. Driven by technology and innovation, Brook Crompton Motor has developed a complete range of low voltage, medium voltage and high voltage AC motors, including the premium Brook Crompton “W”, “10” series and motors suitable for operation in hazardous and harsh environments. Brook Crompton also provides user-friendly adjustable speed drive packages to provide users with efficient and reliable drive systems.
Schorch electric motor joined WOLONG in 2011. Since its establishment in 1882, Schorch has set the standard for high-quality motors. The company offers a diverse range of driving systems to customers globally, catering to both domestic and international projects. Schorch collaborates with its strongest partners to provide services across various industries, including oil and gas, chemicals, power generation, water supply and wastewater management, shipbuilding, steel and metal processing, test stations, tunnels, and so forth.
Regarding the vibration motor(MVE) and Ex vibration sensor, OLI Brand owns the largest market around the globe. Dating back to the year of 1999, WOLONG has jointly started the business with OLI vibration motor in China.
In 2015, WOLONG Electric Nanyang explosion-proof group Co., Ltd. (CNE), China's largest explosion-proof motor scientific research and production bases, joined the WOLONG Group and succeeded realize the strategic cooperation. With various types of explosion-proof motor, low voltage asynchronous motor, Ex-proof high voltage motor, and so forth, Nanyang Explosion Group’s motors are mainly used in oil, coal, chemical, metallurgy, electricity, military, nuclear power and other fields.
In 2018, General Electric (GE) joined the ranks of WOLONG. As the oldest manufacturer of commercial and industrial electrical equipment, GE caters to a multitude of heavy industries, encompassing oil and gas, petroleum and chemicals, power generation, mining and metal processing, paper, water treatment, cement, and materials processing. With the abundant experience in electric motor manufacturing, GE provides huge support with WOLONG.
Analyzing the design and engineering details of our high-power AC 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.
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.
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.
Meeting standard safety rules to guarantee performance across international borders.
Nemko / ATEX
CSA Group
CE Certification
CC / CCC
SABS
TESTSAFE
WOLONG has secured the majority of product certifications, enabling it to penetrate the international market:
Where high power, reliability, and precision control intersect in global projects.
WOLONG's diverse range of motors finds application across a multitude of industrial sectors, serving equipment such as fans, water pumps, compressors, and engineering machinery. These motors are integral to various industries, including ventilation and refrigeration, construction, oil and gas, petrochemicals, coal chemistry, metallurgy, electric and nuclear power, maritime, and industrial automation, to name a few. WOLONG's mission is to deliver optimal solutions and services to our customers.
Powering high-capacity pipeline pumps and multi-stage gas compressors under strict Class I Division 1 (Zone 1) explosion protection requirements.
Providing heavy torque flameproof drive motors for coal face shearers and continuous convey system systems that require high mechanical shock tolerance.
Providing custom low-starting-current asynchronous motors for cooling water circulation pumps and backup generators with high safety levels.
Technical guidance for industrial motor sourcing and specification alignment.
A: Cast aluminum rotors are produced using centrifugal or die-casting techniques, integrating the rotor bars and end rings for excellent torque properties and high mechanical reliability in standard sizes. For larger capacities, copper bar rotors are used because their welded end-ring designs tolerate higher thermal and electrical stresses under heavy startup cycles.
A: The VPI process extracts air and moisture from the stator coils using a vacuum, then forces high-grade insulating resin into the gaps under pressure. Combined with mica tape insulation, this process yields a void-free structure that offers exceptional electrical strength, moisture resistance, and thermal stability.
A: Placing the air inlets on the side avoids direct structural obstacles at the back. This layout minimizes air restriction, limits turbulence, and uses sound-absorbing materials to capture propagation-path energy, lowering operational noise while maintaining an IP22 safety level.
A: Integrating brands like ATB, Brook Crompton, Morley, Laurence Scott, and Schorch allows Wolong to combine European engineering expertise with Chinese manufacturing efficiency, ensuring prompt global distribution of certified, high-quality drive systems.
Explore additional high-voltage, non-sparking, and flameproof motor solutions designed for hazardous conditions.
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