High-performance industrial motors engineered by China's leading R&D manufacturing consortiums.
Industrial vibrators—specifically rotary electric vibration motors—serve as the mechanical heart of bulk materials processing, screening, compaction, and conveying across the globe. By generating controllable, continuous centrifugal force through adjustable eccentric weights positioned on both ends of the double-extended rotor shaft, these specialized motors transform electrical energy into precise mechanical excitation. The demand for these rugged assemblies spans multiple critical verticals, including heavy construction, coal mining, steel metallurgy, grain handling, chemical formulation, and pharmaceutical processing.
As the international process industries transition toward smart automation and increased plant capacity, the demand for high-reliability vibration motors with long bearing life and explosion-proof integrity has accelerated. In high-stakes operations, unplanned downtime can lead to catastrophic losses. Consequently, procurement teams look for suppliers that guarantee rigorous mechanical engineering standards, precision balancing, and dynamic sealing capabilities. In this highly specialized market, China has consolidated its position not just as a high-capacity manufacturing hub, but as an advanced engineering partner capable of delivering robust drives that meet the strictest international specifications (ATEX, IECEx, CSA, NEMA, CE).
Shaanxi Nanfang Motor Technology Co., Ltd stands as the authorized distributor of Wolong (Wolong Electric Drive Group Co., Ltd), one of the world's most powerful motor and control technology alliances. Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has achieved global preeminence through dedicated technical innovation and targeted international acquisitions.
Today, the Wolong footprint encompasses 3 major manufacturing bases, 39 state-of-the-art factories, and 3 global R&D centers. By integrating century-old global engineering institutions into a unified manufacturing matrix, Wolong delivers cutting-edge rotating machinery, low-voltage to high-voltage asynchronous motors, permanent magnet systems, and specialized industrial vibrator drives that serve critical infrastructures worldwide.
Through highly targeted acquisitions, Wolong has built an unparalleled brand ecosystem that brings together Europe’s and America’s most respected historic brands, standardizing advanced European design principles with Chinese production efficiency.
Regarding vibration motors (MVE series) and explosion-proof vibration sensors, OLI holds the largest market share globally. In 1999, Wolong established a strategic joint business with OLI in China, consolidating their leading positions in external vibrators and electric exciters.
Acquired by Wolong in 2011, ATB (comprising Morley and Laurence Scott) brings nearly 130 years of history in underground coal mining drives. ATB delivers high-specification explosion-proof equipment with low starting currents, trusted by naval fleets and chemical plants.
These century-old institutions joined the Wolong Group, bringing pioneers of energy-efficient motor designs. Their portfolios cover standard and hazardous environment motors, supplying premium driving systems to petrochemical facilities and testing stations.
Furthermore, the integration of Nanyang Explosion-Proof Group Co., Ltd (CNE) in 2015—China’s largest scientific research and production base for explosion-proof electric motors—and the acquisition of General Electric (GE)’s industrial motor division in 2018, have bolstered Wolong’s technical capability. This massive network gives Wolong access to top-tier design platforms and quality assurance frameworks, allowing Shaanxi Nanfang Motor Technology Co., Ltd to deliver premium vibration and electric drive equipment worldwide.
Industrial vibrators and motors operate under persistent mechanical stress and high vibrational gravity forces (often exceeding 10G). Because of this, every component must be designed using advanced multi-physics simulation platforms to prevent fatigue failure. Below is an engineering teardown of the Wolong design architecture:
Our rotors feature a robust squirrel cage design. Cast aluminum rotors are produced using centrifugal aluminum casting or die-casting techniques, ensuring a single-piece construction that integrates the rotor bars and end rings. For larger capacity motors, copper bar rotors are employed, featuring reliable bar securing and end-ring welding procedures. Dynamic balancing prevents shaft fatigue during high centrifugal force output.
The stator coil is insulated with high-grade polyester film reinforced with glass cloth, using low-powder mica tape with high mica content. Following the VPI (Vacuum Pressure Impregnation) process, the coils are thoroughly cured to provide exceptional electrical performance, high mechanical strength, excellent moisture resistance, and reliable thermal stability under continuous operation.
Utilizing a fully digital platform for structural and fluid multi-physics simulations, our heavy-strength cast iron (or alternative steel) frames feature exceptional structural redundancy. The design provides robust heat dissipation and natural frequency isolation, keeping the motor protected against external mechanical shocks and preventing resonant stresses.
Comprising a fan cover body, an air guide cylinder, a protective window, and a silencer plate, this system optimizes airflow and reduces windage noise. The side air inlet prevents air blockage from obstacles behind the motor. The fan cover is rated IP22, keeping hands safe from the rotating fan while ensuring efficient cooling.
When operating in hazardous areas like chemical storage facilities, deep coal mines, or grain silos, explosion protection is critical. Working with Shaanxi Nanfang Motor Technology Co., Ltd means having access to equipment that carries all major international safety certifications. We test our systems under extreme temperatures, high dust concentrations, and intense mechanical vibrations to ensure safe operation in hazardous conditions.
Nemko/ATEX
CSA
CE
CCC
SABS
TESTSAFE
Our heavy-duty industrial vibrators and electrical drives are designed to handle demanding workloads, delivering consistent excitation force and high uptime in tough processing conditions.
Electric vibrators are vital for maintaining product flow. They clear blockages, bridging, and rat-holing in feed hoppers, bins, and silos, ensuring continuous gravity discharge of cohesive powders, coal, or moist gravel.
Our vibration motors generate the linear or circular force patterns required by heavy vibratory screeners. This ensures reliable sorting of coal, ores, and aggregates, helping to keep mining operations productive.
In precast concrete production and masonry construction, our vibrators deliver high centrifugal force. This eliminates internal air voids and consolidates dense aggregate, ensuring high structural integrity.
Our dust-ignition-proof motors (such as the YFB3 series) and flameproof drives are certified for high-risk chemical environments, providing safe operation where volatile vapors or dry dust mixtures are present.
Our flameproof motors (like the YBU/YBUS/YBUD series) are built to handle the high torque demands of tunnel boring machines and underground coal shearers, working reliably under high dust and moisture conditions.
Leveraging Laurence Scott’s technology, our products extend to high-efficiency outboard propulsion systems, including the Wolong 40kW marine electric outboard motors, supporting clean and low-noise commercial vessel operations.
Selecting the right industrial vibration motor requires balancing several mechanical and electrical criteria. Sourcing managers should evaluate the following factors to ensure compatibility with their systems:
Centrifugal force is calculated based on the weight of the vibratory machine and the material inside. Sourcing managers must specify:
• Excitation Force Range (kN): Dictated by the eccentric weight configurations.
&br>• Rotational Speed (RPM): Controls the amplitude and acceleration of the screen or hopper.
&br>• Duty Cycle (S1/S2): Crucial for continuous-duty applications.
Industrial vibrators are often exposed to dust, moisture, and hazardous vapors. Sourcing specifications should include:
• Ingress Protection (IP Rating): IP66 is recommended for dust-tight, hose-proof reliability.
&br>• Insulation Class: Class F or H systems help handle high operating temperatures.
&br>• Explosion-Proof Standard: Ensure the vendor has the correct ATEX, IECEx, or CSA certificate for your specific zone.
Standard AC induction motors convert electrical energy into rotational kinetic force to drive machinery like fans or pumps via a shaft connection. In contrast, rotary vibration motors feature double-extended shafts equipped with adjustable eccentric weights. These weights generate controlled, continuous centrifugal force, creating the vibrations needed for vibratory feeders, screens, and silos.
We supply explosion-proof motors from Wolong, ATB, and CNE that are manufactured to strict safety standards. By using heavy-duty cast iron frames, high-specification flameproof joints, dust-tight enclosures, and specialized Class H insulation systems, our motors prevent internal sparks or heat from igniting external hazardous gases or combustible dust.
Yes. The excitation force of the OLI MVE series and similar rotary vibrators is adjusted by changing the relative angle of the eccentric weight blocks on both ends of the shaft. Aligning the weights maximizes centrifugal force, while offset configurations reduce force output. This flexibility allows operators to fine-tune the system's vibration amplitude.
Vacuum Pressure Impregnation (VPI) removes air pockets from the stator core and coil windings. The core is placed in a vacuum chamber, submerged in high-bond resin, and pressurized. This creates a solid, moisture-resistant insulation system that protects the windings from short circuits and mechanical stress caused by continuous vibration.
TESTSAFE is a key coal product certification body in the Southern Hemisphere. Obtaining TESTSAFE compliance allows Wolong's explosion-proof mining drives and vibrators to meet safety requirements in Australia and other major mining markets, facilitating international compliance for mineral projects.
High-efficiency three-phase motors and flameproof equipment engineered for heavy industry.
NANFANG
