Heavy duty flameproof explosion proof motors engineered specifically for long-distance conveyors, coal shearers, and excavation equipment in demanding environments.
Malaysia is undergoing a rapid transition toward advanced manufacturing, downstream mineral processing, and deepwater energy extraction. Industries such as offshore oil and gas platforms in Sarawak and Terengganu, bulk coal handling plants, palm oil refining, and subsea operations require rugged equipment. In these highly volatile environments, explosion hazards from natural gas, hydrocarbon vapors, and organic dusts represent a continuous threat. Thus, compliance with standard certification guidelines is not merely a formality but a mandatory safety ceiling.
Operating in Malaysia requires strict compliance with the **Department of Occupational Safety and Health (DOSH / JKKP)** regulations. Heavy rotating machines, particularly those operating in Zone 1, Zone 2 (gas hazards), Zone 21, and Zone 22 (dust hazards), must carry recognized explosion-proof certifications. Manufacturers supplying these systems must navigate international framework validations (such as **ATEX** and **IECEx**) along with local registration rules before deploying electrical motor systems in chemical facilities, offshore oil wells, or deep coal mining fields.
To support this landscape, Shaanxi Nanfang Motor Technology Co., Ltd provides an engineered class of high-efficiency asynchronous and permanent magnet synchronous motors. By combining the global strength of the Wolong Electric Drive Group with our localized logistics and configuration support, we deliver high-reliability drive packages. These systems reduce unexpected downtime and help processing plants lower their overall operational carbon footprint.
Get Localized Project Evaluation
Shaanxi Nanfang Motor Technology Co., Ltd is the authorized distributor of Wolong. Founded in 1984, Wolong Electric Drive Group (SH600580) operates 3 major manufacturing bases, 39 factories, and 3 R&D centers globally.
Through systematic, multi-brand acquisitions over the past two decades, Wolong has integrated some of the world's most historically significant electric motor manufacturers into its ecosystem. In 2011, WOLONG acquired a 97.94% stake in the Austrian **ATB Group**, bringing premium European technology under its umbrella. This transaction brought together specialized sub-brands including **Morley** (reputed for underground coal mine motors with 130 years of pedigree) and **Laurence Scott** (specialized in low starting current motors for nuclear plants and naval systems).
Following this, **Brook Crompton** joined the group. Renowned for its historical dominance in energy-efficient low, medium, and high-voltage motors, Brook Crompton continues to lead development in high-efficiency design platforms (the "W" and "10" series). In the vibration technology sector, Wolong's partnership with **OLI** established the world's largest market share for vibration motors and Ex sensors. The acquisition of **Schorch** in 2011 further strengthened Wolong's ability to manufacture custom heavy-duty driving systems for critical process industries such as chemical plants and pipeline transmissions.
In 2015, the addition of **Nanyang Explosion-Proof Group (CNE)** consolidated China's largest explosion-proof R&D base into the parent company. In 2018, the acquisition of **General Electric's (GE)** small industrial motor division enhanced the group's technical capabilities in NEMA standard motors, servicing heavy sectors like paper milling, water utility processing, and bulk cement production globally.
How our heavy motors solve technical, mechanical, and safety challenges for complex industrial projects.
Fully certified explosion protection systems (Ex d, Ex de, Ex e, Ex nA) designed to withstand the flammable gases and volatile combustible dusts found in petrochemical and mining zones.
Designed to help heavy industries lower energy use. High-efficiency synchronous and permanent magnet technologies deliver energy savings for high-duty pump systems and continuous air fan installations.
A broad catalog of frame sizes, mounting types, cooling methods (TEFC, water-jacket, air-to-air heat exchangers), and customized shaft dimensions to replace legacy installations without costly piping revisions.
A detailed look at the mechanical components that support reliable operation, high thermal limits, and durability in dusty mines and tropical climates.
Our rotors feature robust cast aluminum or copper bar designs. Cast aluminum rotors are produced using centrifugal casting or high-pressure die-casting to integrate the rotor bars and end rings, delivering high torque performance. For larger or high-speed applications, copper-bar configurations are used, featuring secured bars and welded end rings to withstand thermal stress and high centrifugal forces.
The insulation system uses high-purity mica tape, reinforced with glass cloth and polyester film. The entire assembly undergoes **Vacuum Pressure Impregnation (VPI)**, which cures the insulation, eliminates internal air pockets, and protects the windings from moisture, salt spray, and chemicals.
Constructed using high-tensile cast iron or welded structural steel. The frame geometry is simulated using multi-physics structural and fluid analysis to optimize cooling and minimize vibration. This design provides structural rigidity, protects internal components, and dampens mechanical shock load cycles.
Includes an integrated air guide cylinder, protective entry screen, and silencer plates. The side-entry air inlet helps bypass obstacles behind the motor, reducing turbulence and noise. Rated at **IP22** minimum for the external shroud, it prevents accidental contact while maintaining airflow.
Our products are certified by international organizations, ensuring they meet structural, electrical, and safety requirements across diverse markets.
Nemko/ATEX
CSA
CE
CCC
SABS
TESTSAFE
To support global supply chains, our motors meet multiple regional and international standards:
High-efficiency motors, permanent magnet systems, and specialized marine designs optimized for industrial processes, oil refining, and subsea operations.
How we are developing motor technology to support green operations, high efficiency, and digital diagnostics in the heavy industrial sector.
As the international community moves toward decarbonization, heavy industries are seeking ways to limit energy waste. Shaanxi Nanfang Motor Technology Co., Ltd is aligned with the Wolong Group's development strategy to transition from legacy induction designs to high-efficiency **Permanent Magnet Synchronous Motors (PMSMs)**. PMSM systems offer flat efficiency curves, maintaining high performance under partial loads—a common operating condition for water pumps, air compressors, and ventilation systems in processing plants.
In addition to electrical efficiency, digital system diagnostics are becoming an industry standard. We are integrating IoT sensors onto motor frames to monitor temperature, vibration, and rotor slip in real-time. This data allows plant operators to schedule maintenance based on actual wear, reducing the risk of unexpected motor failures in critical operations. These monitoring systems are designed to operate safely within hazardous Zone 1 and Zone 2 environments.
Answers to common technical, regulatory, and design questions regarding our motor systems.
Our motors carry **ATEX** and **IECEx** certifications, which are recognized globally and align with local guidelines established by the Department of Occupational Safety and Health (DOSH) in Malaysia. Depending on the project requirement, we assist customers with the documentation and registration processes required for local compliance.
Water-cooled models isolate the motor windings from the ambient atmosphere by routing a liquid coolant through the motor jacket. This provides efficient heat dissipation in humid, high-temperature environments, protecting the internal insulation from thermal stress and reducing reliance on external air cooling in enclosed spaces.
Yes. Because Brook Crompton, Schorch, and GE industrial motors are part of the Wolong Group ecosystem, we maintain the original physical mounting footprints, shaft specifications, and electrical parameters. This allows for straightforward retrofitting of older industrial installations.
VPI replaces air voids within the stator slots with a solid, high-insulation epoxy resin. This process seals the winding coils, preventing moisture penetration and protecting them from vibrational wear, thermal expansion, and environmental contaminants.
All cast aluminum and copper bar rotors undergo dynamic balancing to reduce vibration. We run simulations for structural stress and thermal limits, followed by testing to ensure the rotor meets stability requirements under varying load conditions.
NANFANG