Explore our state-of-the-art heavy industry low-voltage and high-voltage three-phase AC asynchronous 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 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.
Learn More About WolongWhy dual-mount B35/B34 setups are standard for severe-duty industrial drivetrains requiring maximum structural rigidity.
In the heavy-duty industrial landscape, motor mounting configurations are vital. The combination of foot and flange mounting, categorized primarily under IEC standards as IM B35 (IM 2001) or IM B34 (IM 2101), represents the zenith of mechanical design stability. B35 motors incorporate both feet for base mounting and a clearance-hole flange on the drive-end shield, allowing double anchoring.
This dual anchoring is engineered to resolve high axial and radial load stresses in demanding environments, such as marine thrusters, heavy-duty centrifugal compressors, and positive displacement pumps. By combining the load-bearing strength of the foot mount with the precision alignment of the flange mount, B35 motors minimize shaft misalignment and dampen harmonic vibration, preventing premature bearing failure.
Double-anchor systems prevent shaft movement, offering exceptional resistance to high startup torques and fluctuating radial loads.
By using both cast iron feet and machined steel flanges, load paths are distributed efficiently through the host machine's baseplate and frame.
Crucial for hazardous, explosive environments where motor shifting can cause catastrophic contact spark ignition.
A complete breakdown of our industrial solutions, including efficiency standards, certification, and application versatility.
Nemko/Atex
CSA
CE
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SABS
TESTSAFE
Adhere to the comprehensive marketing strategy for the electric motor and the entire industry chain: WOLONG has secured the majority of product certifications, enabling it to penetrate the international market.
Combining century-old Western engineering pedigree with highly optimized Chinese industrial supply chain advantages.
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. and development, 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, LaurenceScott, 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.
Accumulated with abundant asset 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 oversea 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 became 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. 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.
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. 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.
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 across various industries, including oil and gas, chemicals, power generation, water supply, shipbuilding, and metal processing.
OLI Brand owns the largest vibration motor (MVE) and Ex vibration sensor market around the globe, partnered with Wolong in China in 1999. 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. Mainly used in oil, coal, chemical, metallurgy, electricity, military, and nuclear power 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, paper, water treatment, cement, and materials processing. GE provides huge support with WOLONG.
Why global OEMs trust Shaanxi Nanfang Motor to navigate complex cross-border logistics and local engineering audits.
Purchasing foot-flange mounted motors from China is not just about cost reduction; it's about access to the world's most vertically integrated industrial ecosystem. Our factories utilize high-purity electrolytic copper, self-manufactured high-precision lamination stacks, and automated CNC casing centers. This ensures that every B35 mounting foot and flange surface is machined in a single clamping process to guarantee true concentricity.
Furthermore, Wolong's massive raw material purchasing power cushions our clients from global commodities price volatility. With over 100 automated production lines, the lead time for custom OEM motor frames is reduced by up to 35% compared to European or North American manufacturers.
Engineering compliance is the primary hurdle for global industrial buyers. Shaanxi Nanfang Motor provides a complete compliance audit pack with every shipment. We ensure that our foot-flange mounted motors conform directly to regional operating environments, matching local voltage frequencies, mounting alignments (both metric and fractional NEMA shafts), and explosion safety ratings.
Whether your project is located in the North Sea, the Australian Outback, or South American petrochemical zones, our localized compliance engineers provide localized documentation, on-site commissioning supervision, and localized structural adapter solutions.
A detailed breakdown of the internal materials and physics simulations behind Wolong's premium electric drives.
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.
Deploying high-torque, variable-speed drivetrains in critical infrastructure worldwide.
As a globally esteemed manufacturer of motors and drive solutions, WOLONG boasts 39 manufacturing facilities and 4 research and development centers (R&D center) across various countries including China, Vietnam, the United Kingdom, Germany, Austria, Italy, Serbia, Mexico, India and so forth.
This global footprint allows us to support multi-national engineering procurement construction (EPC) contractors, providing unified engineering support, seamless parts replacements, and global project dispatch services.
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.
Deciphering total cost of ownership (TCO), ESG metrics, and smart IoT-enabled condition monitoring.
Integrating OLI Ex vibration sensors directly into the B35 frame enables continuous monitoring of bearing wear, winding temperature, and rotor alignment via cloud networks, cutting downtime by 40%.
Global regulations are moving rapidly towards IE4 and IE5 standards. Our permanent magnet synchronous motors (PMSM) operate with variable speed drive systems to drastically reduce total energy footprints.
Strategically matching logistics routes from China to global industrial clusters helps reduce shipping costs, clear import tariffs, and secure smooth custom clearances with local certifications.
Discover our frequency-regulated, composite explosion-proof, and coal mine duty high-voltage motor series.
Critical engineering and logistics information for supply chain professionals and electrical engineers.
Every single motor shipped by Shaanxi Nanfang Motor undergoes comprehensive factory testing to ensure absolute reliability. Our testing protocols include:
NANFANG