Discover our premier selection of CE certified industrial electric drives. Designed with precision ball bearings for continuous heavy-duty cycles, optimal energy efficiency, and certified explosion safety in hazardous zones.
Shaanxi Nanfang Motor Technology Co., Ltd. stands as the authorized flagship distributor of Wolong Electric Drive Group Co., Ltd. Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has achieved global preeminence in the development, manufacturing, and distribution of industrial motor and control systems.
With over three decades of dynamic industrial growth, the Wolong footprint encompasses 3 primary manufacturing bases, 39 advanced factories, and 3 world-class R&D centers globally. Shaanxi Nanfang Motor acts as the strategic node connecting this massive engineering matrix to international enterprises. We deliver robust, CE-certified ball bearing motors to critical industries requiring absolute mechanical reliability, such as petrochemical, mining, power generation, and steel production.
LEARN MORE ABOUT USWe bridge the gap between complex industrial operating parameters and robust mechanical engineering. By optimizing motor design, bearing configuration, and thermal isolation, we offer solutions that mitigate Downtime Risk (DTR) and optimize Total Cost of Ownership (TCO).
We supply high-safety drives configured for Zone 1 and Zone 2 hazardous areas. Offering multi-layered flameproof (Ex d), increased safety (Ex e), and pressurized (Ex p) protective housings certified to ATEX, IECEx, and CU-TR regulations.
Engineered to meet the most stringent global energy efficiency classes. We offer premium-efficiency asynchronous motors (IE3/IE4) and ultra-premium IE5 permanent magnet synchronous motor solutions featuring precise variable frequency control.
Covering the entire spectrum of industrial motor needs: from low-voltage AC drives to high-voltage, high-capacity wound rotor induction motors, and custom vibration motors engineered for tough material handling tasks.
Wolong's ascendancy to the forefront of the global drive industry is marked by the strategic acquisition of legendary motor manufacturers worldwide. These integrations have consolidated century-old craftsmanship with modern automated manufacturing.
In 2011, Wolong acquired a 97.94% stake in the Austrian ATB Group, a titan among European electric motor manufacturers. This acquisition injected deep engineering knowledge into Wolong's design processes. The ATB portfolio includes Morley, which boasts a 130-year legacy of manufacturing underground coal mining motors renowned for their rugged design and reliability.
The acquisition also brought in Laurence Scott, a pioneer in low starting-current propulsion systems that power British nuclear facilities and naval vessels. Laurence Scott's engineering heritage, honored with the Queen's Award, ensures the highest safety standards in severe industrial applications.
Brook Crompton brought over a century of electric motor design experience to the Wolong group. Recognized globally for pioneering premium-efficiency motors, Brook Crompton's legacy is represented in our "W" and "10" series low-voltage and medium-voltage motors, which are tailored for severe chemical and maritime environments.
Similarly, Schorch, founded in Germany in 1882, has set the benchmark for heavy-duty drive systems. Schorch motors are widely used in massive petrochemical pipelines, gas compression facilities, and public water treatment plants, where downtime is not an option.
In 2018, General Electric (GE) Industrial Motors became part of Wolong. As a veteran manufacturer of industrial electric equipment, GE's integration strengthened Wolong's presence in NEMA-standard markets, providing deep expertise in low-voltage and medium-voltage motors for sectors like mining, steel processing, and water purification.
Additionally, the joint venture with OLI, a world-class manufacturer of mechanical vibration motors (MVE) and sensors, has expanded Wolong's capabilities in bulk materials handling and vibration engineering.
In demanding industrial environments, the bearing system is the heart of the electric motor. Our engineers focus on key innovations to extend bearing life, reduce energy losses, and prevent electrical damage from variable frequency drives (VFDs).
Modern VFDs can induce high-frequency shaft voltages, which can cause micro-arcing and pitting inside standard bearings. To resolve this, our high-voltage and chemical-grade motors feature ceramic (silicon nitride) hybrid bearings or insulated outer rings, along with grounding rings to safely divert shaft currents.
We are integrating IoT vibration and thermal sensors directly into our motor bearing caps. This allows plant operators to monitor real-time acceleration data and localized temperatures, shifting maintenance from reactive schedules to predictive, data-driven planning.
Our motors are equipped with high-shear-strength synthetic polyurea greases. Combined with optimized bearing seals, this layout extends the L10 bearing life to over 100,000 hours in horizontal setups, reducing the frequency of regreasing cycles.
Underneath the protective paint lies an engineered framework built using multi-physics simulations to withstand significant dynamic stresses and thermal fluctuations.
The rotor features a 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 stator 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 in humid or chemically aggressive settings.
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.
Our factories utilize precision machining centers, advanced dynamic balancing equipment, and high-voltage test fields to verify that each motor meets international standards before dispatch.
Operating in a highly dynamic global environment, Shaanxi Nanfang Motor and Wolong leverage the Industry 4.0 paradigm to guarantee delivery reliability. By incorporating smart manufacturing systems, automated stator winding cells, and real-time inventory tracking, we optimize production times even for complex, customized motors.
Our supply chain resilience is built on localized sourcing of critical raw materials, such as high-grade electrical silicon steel and pure copper wire. We maintain long-term supply agreements to mitigate price volatility. Additionally, our dual-facility production model ensures that production can be dynamically shifted between manufacturing bases if needed, protecting your projects from supply disruptions.
Adhering to a comprehensive marketing strategy for electric motors across the entire industry chain, Wolong has secured major international certifications. This allows our products to integrate smoothly into different regional regulatory frameworks.
| Standard / Certifying Body | Compliance Target & Geographical Scope | Technical Verification Scope |
|---|---|---|
| ISO 9001:2015 | Global Quality Management Certification | Design, manufacturing, testing, and distribution safety audits. |
| CE / Nemko / ATEX | European Union (EU) Markets | Mechanical and electrical safety, explosive atmosphere verification (EN/IEC 60079 series). |
| CSA / UL Standard | North American Industrial Safety | High efficiency standards, insulation system integrity, starting current levels. |
| TESTSAFE | Australia and Southern Hemisphere Coal Mining | Explosion protection safety, flame propagation prevention in mining environments. |
| SABS | South African Industrial Compliance | Local environmental resilience and electrical safety regulations. |
Nemko/Atex
CSA
CE
CC
SABS
TESTSAFE
Engineering procurement departments look for more than just raw specifications. Global buyers require vendors who can provide verification, engineering services, and long-term support.
We provide full test certificates, including routing test reports, type-tests (covering heating, efficiency, and torque values), and certified dimensional drawings in CAD format prior to shipment.
We keep critical mechanical components, such as bearing housings, dynamic fan assemblies, and pre-packed insulation components, ready in stock to ensure fast dispatch and minimize downtime.
If standard sizes don't match your physical footprint, our design team can configure shaft lengths, mounting configurations, and junction box placements to fit your existing site layout.
Answers to frequently asked questions about bearing systems, certification standards, and motor operation.
Our extended range of heavy industrial drive systems features robust cast frame designs, custom winding configurations, and explosion safety certifications.
NANFANG
