Explore our selection of heavy-duty, high-voltage, and explosion-proof horizontal AC motors designed for demanding applications in petrochemicals, mining, and power generation.
Horizontal motors represent the foundational backbone of industrial rotational mechanics. As standard foot-mounted installations, horizontal configurations balance gravity, control vibrational harmonics, and provide unparalleled structural alignment in applications spanning high-pressure pumping, massive gas compression, and primary material processing.
In today's global industrial landscape, the transition to sustainable energy has catalyzed stricter efficiency protocols. The worldwide market is rapidly moving away from sub-standard units toward premium-efficiency standards (IE3, IE4, and the cutting-edge IE5). By optimizing the magnetic flux distribution within the electrical laminations and mitigating copper loss within both the stator windings and the rotor cage, modern horizontal motors play an indispensable role in reducing the carbon footprint of massive utility complexes.
China, as a global hub of electric motor manufacturing, has moved beyond basic cost competition. Through localized research, international mergers, and strict quality control standards, Chinese manufacturers supply highly specialized products that conform to global frameworks including the American NEMA and European IEC guidelines.
Rising regulatory pressures require the deployment of IE4 and IE5 permanent magnet synchronous designs. This change decreases operating temperatures, extends bearing insulation lifetimes, and reduces overall energy draw in continuous-duty applications.
Modern process industries require dual-certified flameproof architectures. The design must contain internal gas explosions without igniting volatile external atmospheres, conforming directly to ATEX and IECEx standards.
Horizontal motors are increasingly equipped with vibration diagnostics, real-time thermal monitoring, and predictive failure analysis modules, forming a crucial component of cyber-physical production pipelines.
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). After more than 30 years of continuous growth, WOLONG has established a global footprint that consists of 3 major manufacturing bases, 39 state-of-the-art factories, and 3 global R&D centers.
Always focusing on the manufacturing of premium motors and drive control systems, WOLONG is committed to a unified global brand strategy. This ensures that every motor off the production line meets international standards in research, development, assembly precision, and operating efficiency.
A strategic timeline of international expansion and integration of historic motor manufacturers.
WOLONG established a joint venture with OLI, the global leader in vibration motors (MVE) and explosion-proof vibration sensors, securing a dominant share of the international vibration technology market.
WOLONG acquired 97.94% of the Austrian ATB Group, one of Europe's top three motor manufacturers. This acquisition integrated renowned heavy-industry brands including Morley (underground coal mining motors with a 130-year heritage) and Laurence Scott (known for low starting currents, nuclear power auxiliary motors, and naval systems).
Established in 1882 in Germany, Schorch joined WOLONG in 2011. Known for heavy-duty industrial drives, Schorch supplies customized electric systems for global petrochemical, power station, and marine applications.
WOLONG Electric Nanyang Explosion-proof Group Co., Ltd. (CNE), China's largest manufacturing base for flameproof and explosion-proof motors, integrated with WOLONG. This merger enhanced the group's capacity for high-voltage ex-proof machinery in defense, oil refining, and nuclear energy.
WOLONG acquired GE's small industrial motor business. This partnership integrated GE's engineering heritage in heavy industries like oil & gas, mining, and pulp & paper into WOLONG's production and design lines.
"Through integrating historic brands like Brook Crompton, Morley, Laurence Scott, and Schorch, WOLONG has developed a complete range of low, medium, and high voltage AC motors."
Brook Crompton brings over a century of motor design experience. Conforming to premium efficiency frameworks, their "W" and "10" series provide reliable performance in harsh chemical and marine environments.
Every horizontal motor is engineered using multi-physics simulation platforms to balance structural mechanics, thermals, and magnetic flux fields.
The rotor features a squirrel cage design, with cast aluminum rotors widely utilized for standard duties. These are produced using centrifugal casting or high-pressure die-casting techniques, integrating the rotor bars and end rings into a single-piece construction. This structural integrity guarantees excellent torque characteristics and high mechanical strength under rotational acceleration.
For larger high-voltage systems, copper bar rotors are employed, featuring welded end rings and secure bar attachments. Additionally, high-speed configurations incorporate protective retaining rings to manage centrifugal stresses at high speeds.
The coils are crafted using polyester film reinforced with glass cloth, combined with high-grade, mica-filled tapes. Once the coils are wound and placed in the stator core, the assembly undergoes VPI (Vacuum Pressure Impregnation).
This process eliminates air pockets and infuses the stator with protective resins. The resulting insulation system provides excellent electrical strength, moisture resistance, and long-term thermal stability.
The frame design is optimized using digital multi-physics simulation platforms. This helps isolate mechanical resonance, optimize cooling air currents, and ensure structural rigidity.
Constructed from high-strength cast iron (or fabricated steel for custom designs), the frame provides the necessary stiffness to withstand operational shocks, maintain low vibration levels, and ensure heat dissipation.
The cooling system includes a lightweight fan cover body, an air guide cylinder, a protective window, and a silencer plate. This layout helps minimize structural vibrations.
By drawing air from the sides, the design avoids obstacles behind the motor, minimizing noise caused by turbulent flow. Sound-absorbing materials are also integrated, helping lower noise levels. The fan cover carries an IP22 rating, preventing accidental contact with the rotating fan blades.
To support global distribution and ensure safety in hazardous industries, WOLONG motors comply with major international certifications and standards.
WOLONG's motor and drive solutions are deployed globally across 39 manufacturing facilities and 4 R&D centers, spanning countries such as China, Vietnam, the UK, Germany, Austria, Italy, Serbia, Mexico, and India.
These motors drive equipment including industrial ventilation fans, high-pressure water pumps, cooling compressors, and heavy engineering machinery. Key sectors served include:
WOLONG operates dedicated R&D centers in China, Europe, and Japan, alongside a central research institute in Shanghai. Key focus areas for our technology development include:
Detailed answers on configuration, safety compliance, and efficiency requirements for horizontal motors.
Browse our range of specialized motor designs, including brushless excitation synchronous, high-output explosion-proof, and variable frequency speed-regulated drives.
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