High-Quality Ex Motors Suppliers & Exporters

Ex-Proof Engineering, Certified Safety, and High-Efficiency Drive Systems for Hazardous Industrial Environments

Global Industrial Demand & Procurement Dynamics

In high-risk heavy industries, the choice of a drive system is direct linked to continuous production uptime and operational safety.

Modern petrochemical complexes, deep underground mines, and volatile process plants require robust and certified explosion-proof (Ex) motor systems. As worldwide regulations around climate impact and efficiency targets tighten, the demand has moved from standard workhorse machinery towards highly integrated, low-loss, and intrinsically safe dynamic setups.

Industrial buyers require robust proof of compliance with global standards, including ATEX, IECEx, UL, and CSA. Furthermore, there is a distinct push toward high-efficiency targets, such as IE4 and IE5, which lower operational expenses (OPEX) and ease the carbon loading of major mechanical processes. Securing equipment from a reliable global exporter ensures parts consistency, regulatory certification, and technical support across borders.

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Global Safety Certifications

Full compliance with ATEX, IECEx, CSA, Nemko, and other regional certification regimes guarantees reliable operation in Zone 1, Zone 2, and dust environments (Zone 21/22).

High-Efficiency Standards

Configurable drive technologies supporting IE3, IE4, and permanent magnet IE5 designs translate directly to lower grid loads and minimized heat generation.

Authorized Distributor: Shaanxi Nanfang Motor Technology Co., Ltd.

Direct access to the comprehensive manufacturing ecosystem of Wolong Electric Drive Group.

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). Over the past three decades, the company has grown into a premier global player in motors and industrial drive controls, operating 3 key manufacturing bases, 39 state-of-the-art factories, and 3 global research and development centers.

By integrating local distribution capabilities with global manufacturing resources, Shaanxi Nanfang Motor delivers custom-engineered hazardous area motors, synchronous systems, and industrial drives directly to end-users and engineering firms worldwide. This partnership ensures premium hardware is backed by direct factory guarantees and technical support.

100+
Production Lines
58+
Countries Served
32+
Core Patents
200+
Major Projects

A Global Ecosystem: Synergy of Century-Old Motor Brands

Through strategic acquisitions and partnerships, Wolong has integrated some of the world's most recognized motor brands to create a unified technological platform.

ATB

ATB Group

Acquired in 2011, ATB (Austrian ATB Group) is one of Europe's top motor manufacturers. It includes the prestigious Morley and Laurence Scott brands, bringing high-specification and high-performance safety designs to the global petrochemical and mining sectors.

BC

Brook Crompton

Boasting over a century of electric motor expertise, Brook Crompton joined the Wolong Group, bringing energy-efficient technologies, including the famous premium "W" and "10" series designed for harsh environments.

SC

Schorch Motors

Established in 1882 in Germany and joining Wolong in 2011, Schorch sets high standards for high-quality heavy-duty drive systems, specializing in oil and gas, shipbuilding, power generation, and metal processing industries.

OLI

OLI Vibration

Beginning joint operations in 1999, OLI represents a global leader in vibration motors (MVE) and Ex vibration sensors, providing specialized industrial processing solutions across the globe.

CNE

Nanyang Explosion

Acquired in 2015, CNE (Nanyang Explosion-Proof Group Co., Ltd.) is China's largest scientific research and production base for explosion-proof motors, supporting petrochemical, military, and nuclear industries.

GE

General Electric (Partnership)

In 2018, GE's industrial motor business joined Wolong. As a veteran manufacturer of heavy-duty industrial electric equipment, GE provides extensive technological support to the Wolong global network.

China Factory 4.0: Supply Chain Resilience & Efficiency

Leveraging advanced automation, smart manufacturing, and integrated logistics to secure global production lines.

China's manufacturing transition to Industry 4.0 has changed the global distribution of explosion-proof electrical machinery. With centralized component sourcing, automated production lines, and direct access to major international shipping routes, Wolong’s production lines deliver high-specification products with optimized lead times and high reliability.

By deploying digital twins, automated VPI (Vacuum Pressure Impregnation) setups, and AI-driven quality checks, the factories ensure each motor meets tight mechanical tolerances. This vertical integration protects the supply chain against raw material fluctuations and components shortages, ensuring that global partners receive consistent production deliveries on time.

China Factory 4.0 Manufacturing Center

Advanced Motor Engineering & Component Breakdown

Inside our high-performance explosion-proof motors, precision manufacturing ensures safety under high mechanical stress.

Motor Rotor Manufacturing

Rotor Assembly

Utilizes squirrel cage cast aluminum or copper bar configurations. Centrifugal casting and high-precision dynamic balancing assure reliable torque delivery and low mechanical vibration levels.

Motor Stator VPI Process

Stator & Windings

Crafted from high-grade polyester film and glass-fiber mica tape, followed by the Vacuum Pressure Impregnation (VPI) cycle to achieve high insulation resistance and thermal stability.

Rugged Cast Iron Motor Frame

Enclosure / Frame

Engineered via digital multi-physics thermal modeling. Cast iron or heavy steel frames provide robust heat dissipation, high structural integrity, and resistance to environmental damage.

Low Noise Fan Hood System

Low-Noise Fan Hood

Features sound-absorbing baffles, an optimized air-guide cylinder, and an IP22 rating. Promotes high cooling performance while maintaining low acoustic output.

International Standards and Conformity Certifications

Tested and verified by international authorities, our product range meets the safety criteria of global markets.

Nemko ATEX Certification
Nemko / ATEX
CSA Certification
CSA
CE Marking
CE
CCC Certification
CC / CCC
SABS Certification
SABS
TESTSAFE Standard Certification
TESTSAFE

Adhering to Strict Certification Protocols

WOLONG’s commitment to safety certifications has enabled its entry into major international markets. ISO 9001 Certification serves as the framework for our quality management systems, while specific electrical standards meet NEMA and IEC requirements.

Our low-voltage products carry UL and CSA marks for North American markets. For high-voltage and flameproof lines, ATEX and IECEx certificates enable integration in European hazardous areas. The addition of TestSafe certification (the largest coal equipment certification body in the Southern Hemisphere) helps open distribution paths for Chinese mining machinery in Australia and nearby markets.

Certificate Documents

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Certificate 5

History of Innovation and Strategic Acquisitions

Wolong's growth into a global motor supplier is built on strategic investments and integrating established engineering names.

2011: ATB Group Acquisition

WOLONG acquired 97.94% of Austrian ATB Group, gaining access to key European production facilities and incorporating brands like Morley (coal mining motors) and Laurence Scott (nuclear and naval applications) into its portfolio.

ATB Acquisition Event

Integrating Brook Crompton & Schorch

Adding Brook Crompton expanded the group's options for energy-efficient low/medium voltage motors. The integration of Schorch (established in Germany in 1882) strengthened our position in high-power driving systems for oil and gas projects.

Brook Crompton & Schorch Integration

2015-2018: Nanyang & GE

In 2015, Nanyang Explosion-proof Group (CNE) joined Wolong. In 2018, the partnership with General Electric (GE) industrial motors consolidated the group's engineering resources for large-scale mining, metallurgy, and water treatment projects.

Nanyang & GE cooperation

State-of-the-Art Production & Testing Facilities

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Localized Application Scenarios

WOLONG’s motors are configured for specific roles across global infrastructure projects, municipal systems, and deep-sea environments.

Petrochemical & Gas

Installed in refineries, pipeline pumping stations, and gas liquefaction plants where flameproof properties prevent ignition of volatile vapors.

Coal & Heavy Mining

Morley conveyor motors and traction drives power coal cutters and material handlers operating under high dust loads and damp conditions.

Marine & Naval

Laurence Scott low starting current generators and custom drives supply power aboard naval vessels, ocean transports, and offshore drilling platforms.

Water & Wastewater

Synchronous motors power high-volume municipal pumps, treatment blowers, and water supply grids, lowering long-term operating costs.

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Technical Q&A / FAQ

Detailed insights to assist procurement managers and systems engineers in selecting hazardous area electrical drives.

Q1: What are the key differences between ATEX and IECEx certifications for Ex motors?
ATEX is a mandatory European Union directive (ATEX 2014/34/EU) that applies to equipment operated in hazardous environments within the European Economic Area. In contrast, IECEx is an international certification scheme based on IEC standards, designed to ease global trade by aligning safety requirements. While many technical requirements are similar, ATEX requires specific CE marking and compliance with local European directives, whereas IECEx is widely accepted directly in regions outside Europe, such as Australia, parts of Asia, and South America.
Q2: How does the Vacuum Pressure Impregnation (VPI) process enhance motor durability?
VPI introduces a premium, high-mica varnish into the stator winding assembly under vacuum and pressure cycles. This eliminates microscopic air pockets, moisture pockets, and voids within the insulation. The result is a solid, environmentally sealed insulation system with high dielectric strength, high thermal dissipation properties, and resistance to chemical moisture. This protection is critical for motors subjected to thermal cycling and high vibrations in hazardous chemical processing.
Q3: Why are permanent magnet synchronous motors (PMSM) like the WEPM series growing in demand?
PMSM systems achieve IE5 ultra-high efficiency standards by using rare-earth permanent magnets within the rotor assembly. This design eliminates rotor copper losses (heat generation due to electrical resistance in standard cage rotors), resulting in higher torque density, better partial-load efficiency, and cooler operation. Lower motor temperatures extend the life of bearings and stator winding insulation, which reduces maintenance intervals in remote oil, gas, and chemical storage locations.
Q4: What role does digital simulation play in modern motor frame development?
Our engineering teams use multi-physics digital simulation platforms to model structural forces, fluid dynamics, and heat dissipation simultaneously. By calculating the natural frequency margins of the motor structure, engineers can design cast iron or steel frames that resist resonance and isolate internal dynamic forces. This minimizes physical vibration, increases heat rejection, and ensures structural durability under high mechanical loads.
Q5: How does the TestSafe standard benefit coal mining equipment exporters?
TestSafe is a major safety certification body for electrical equipment operating in underground coal mines within the Southern Hemisphere. Obtaining TestSafe certification confirms that our mining motors meet Australian safety protocols (such as AS/NZS 60079 series). This speeds up procurement approvals and site compliance reviews for major mining companies operating in Australia and surrounding regions.