OEM ATB Motors Manufacturers & Companies

Empowering global heavy industries with premium custom ATB brand drives, certified explosion-proof motor systems, and international compliance security.

The Integration of ATB & Wolong: Global Industrial Powerhouse

In the highly regulated world of industrial electric motors, safety, efficiency, and customized engineering dictate project success. Operating under the strategic banner of Shaanxi Nanfang Motor Technology Co., Ltd (the authorized distributor of Wolong), we provide direct access to the global technical reserves and production prowess of Wolong Electric Drive Group Co., Ltd. Founded in 1984 and listed in 2002 (code SH600580), Wolong has grown to command 3 manufacturing bases, 39 advanced factories, and 3 global research institutes.

A transformative milestone occurred in 2011, when Wolong acquired a 97.94% stake in the Austrian ATB Group (ATB Motor)—one of Europe’s top three electric motor manufacturers. This acquisition integrated a century of engineering pedigree, positioning Wolong and ATB as industry-leading giants in the development of customized high-voltage and medium-voltage explosion-proof motors.

Strategic Synergy: By combining ATB's robust European design engineering with Wolong’s high-precision mass production capabilities, we deliver customizable motor drives that meet the strictest limits of IECEx, ATEX, NEMA, and local requirements worldwide.
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Strategic advantages
100+
Production Sites
58+
Export Countries
32+
Core Patents
200+
Large Projects

Our Industry Solutions & Advantages

Discover how our systems integrate compliance certificates, unmatched energy efficiency, and premium brand legacy.

ATEX/IECEx/EAC Certified

Designed for Zone 1, Zone 2, Zone 21, and Zone 22. We hold certificates including ATEX, IECEx, CSA, UL, and CU-TR to guarantee compliance for hazardous chemical and mining plants.

IE4/IE5 Ultra-High Efficiency

Offering massive energy savings using permanent magnet technologies (TBVF series) and optimized rotor dynamics, reducing total cost of ownership (TCO) across decades of active service.

Diversified Product Lines

From low voltage variable frequency induction systems (WEBP3, YFB3) to high voltage positive pressure shell designs (YZYKK, TZYW) covering frames 355 to 560 and beyond.

R&D Advantages

R&D and Technical Prowess

Wolong maintains top-tier R&D centers across Europe (Austria, UK, Germany), Japan, and Shanghai (Central Research Institute). Using multi-physics simulation platforms, we optimize fluid dynamics, electromagnetic performance, and mechanical structures before prototyping.

Brand Legacy

Centurial Brand Heritage

The Wolong Group consolidates world-renowned heritage brands including Schorch (established 1882), Brook Crompton, Laurence Scott (historic nuclear and naval supplier), Morley (underground mining specialists), and ATB. This establishes deep engineering trust.

Explosion Proof Advantage

Explosion-Proof Leadership

With CNE (Nanyang Explosion-Proof Group) under the Wolong umbrella, we operate China's largest testing and manufacturing base for flameproof and positive-pressure technologies. Our motors serve major operations in petrochemicals, oil exploration, and deep shaft mines.

Our Global Heritage: Legacy of Schorch, Morley, Laurence Scott & Brook Crompton

Tracing the evolution of the world's most trusted electrical machine manufacturers under one unified banner.

Acquisitions history

ATB Group & Morley Mining Motors

In 2011, WOLONG's holdings group acquired 97.94% of the Austrian ATB Group. Along with ATB came Morley Motors, boasting nearly 130 years of underground coal mining expertise. Morley motors are synonymous with rugged durability, built to withstand the extreme environmental conditions of dust, mechanical stress, and combustible gas in global coal extraction markets.

Laurence Scott Motors

Laurence Scott: Nuclear & Naval Authority

Laurence Scott has a storied history of providing custom low starting-current motors for British nuclear power plants and generators for naval vessels. This level of safety and reliability has been preserved and integrated into the high-voltage solutions we supply to critical offshore platforms and public infrastructure projects.

Brook Crompton Motors

Brook Crompton Motors

Having joined the Wolong Group, Brook Crompton is a pioneer in premium high-efficiency motors. The "W" and "10" series of low, medium, and high-voltage motors are widely used for general industry applications, reducing greenhouse gas emissions through advanced design.

Schorch Motors

Schorch Electric Motors

Established in Germany in 1882, Schorch joined Wolong in 2011. Famous for heavy industrial drives, Schorch manufactures custom systems for oil and gas, pipeline compressors, municipal water supply, metal processing, and high-load test beds globally.

OLI Vibration Motors

OLI Brand & Vibration Technology

Dating back to 1999, Wolong's strategic partnership with OLI vibration motors has commanded a dominant share of the global vibration market. OLI provides high-performance MVE vibration motors and Ex-certified sensors for bulk material handling.

Nanyang Explosion Proof Group

Nanyang Explosion-Proof Group (CNE) & GE Cooperation

In 2015, CNE, China's largest R&D and manufacturing base for explosion-proof motors, integrated with Wolong. In 2018, the strategic scope expanded further when General Electric (GE) entered into a global alliance. Through this partnership, Wolong gained extensive support in commercial and industrial design, serving global heavy industries (petroleum, water, pulp, cement, mining) with premium GE-standard products.

Comprehensive Certifications & Quality Assurances

We break international trade barriers by strictly complying with all major global engineering standards.

Nemko/ATEX logo

ATEX

CSA logo

CSA

CE logo

CE

CCC logo

CCC

SABS logo

SABS

Testsafe logo

TESTSAFE

Global Standards Breakdown

  • ISO Standards: Wolong is an ISO 9001, ISO 14001, and ISO 45001 certified manufacturer, providing a transparent trace for all manufacturing processes.
  • NEMA Standards: For North American projects, we execute comprehensive testing (efficiency, insulation resistance, lock-rotor currents, torque limits, vibration diagnostics) to meet UL and CSA parameters.
  • ATEX & IECEx: Fully verified for flameproof (Ex d), increased safety (Ex e), positive-pressure (Ex p), and non-sparking (Ex n) protection principles, making them safe for hazardous European and international zones.
  • TESTSAFE Standard: Testsafe certification allows our specialized coal mining drives to seamlessly enter the Australian and Southern Hemisphere mining markets.

Inside Wolong ATB: Component Construction & Engineering

Every element is engineered for maximum operational lifetime and resistance to hostile environmental factors.

Explosion-proof Motor Rotor

High-Performance Rotor Design

Utilizing a squirrel-cage construction, our rotors feature centrifugal cast aluminum or die-cast techniques to integrate the bars and end-rings. This monolithic structure offers excellent mechanical stability and high starting torques. For heavy-duty industrial applications, copper bar rotors are fabricated with advanced end-ring welding and retaining ring systems, ensuring mechanical safety at high operating speeds.

VPI Motor Stator Coils

VPI Insulated Stator Coils

Coils are insulated using high-content mica tapes, reinforced with polyester films and glass cloth. The completed stator core undergoes a rigorous Vacuum Pressure Impregnation (VPI) treatment using solvent-free resin. The result is a moisture-resistant insulation system that offers superior dielectric strength, mechanical protection, and thermal dissipation.

Digital Simulated Cast Iron Motor Frame

Digitally Simulated High-Strength Frames

Our cast iron and fabricated steel frames are developed using structural and fluid multi-physics simulation software. This ensures high structural rigidity, optimal heat-dissipation pathways, and low natural frequency vibration. This design mitigates resonant vibrations and structural fatigue under high shock loads.

Low Noise Fan Hood System

Low Noise Acoustic Fan Hood System

Designed with internal air deflectors, silencer plates, and vibration-absorbing structures. Side-entry air intakes minimize dynamic air blockages, lowering noise generated by air friction and turbulence. Rated to IP22/IP23, the hood prevents contact with rotating fan blades while maintaining optimal cooling airflow.

Motor testing and control
Stator winding details
Precision rotor dynamics
Final motor assembly check

Macro Industry Applications & Future Technology Roadmap

Bridging heavy infrastructure demand with next-generation smart electric drive networks.

Global Heavy Industry Integration

WOLONG’s advanced drive systems are engineered for high reliability, operating critical infrastructure such as industrial fans, water pumps, compressors, and mining transport conveyors. Our motors serve key sectors including:

  • Oil & Gas / Petrochemicals: High-voltage flameproof motors driving central refinery compressor trains in environments containing volatile gases.
  • Coal Mining: Water-cooled explosion-proof motors (such as the YBC coal shearer series) designed to endure high dust concentrations and severe impact loads.
  • Marine Propulsion & Auxiliaries: DNV-approved low-voltage marine motors operating under high-salinity and high-humidity ambient conditions.
  • Nuclear & Conventional Power: Low starting-current induction systems that safeguard backup generator sets and critical feedwater pump lines.

Future Technical Roadmap (Towards 2030)

The global transition to net-zero emissions requires motors with high power density and ultra-low energy losses. Our research institutes in Austria, Germany, and Shanghai are executing a three-tier development roadmap:

  1. Wide-Bandgap VFD Integration: Optimizing stator insulation to handle high dv/dt voltage spikes from Silicon Carbide (SiC) variable frequency drives.
  2. Permanent Magnet Synchronous Motors (PMSM): Commercializing IE5+ PM motors for hazardous zones, offering high torque down to near-zero speeds.
  3. Smart Predictive Diagnostics: Integrating vibration, temperature, and magnetic flux sensors within the motor frame. This enables real-time, cloud-connected health monitoring to mitigate unplanned downtime.

Frequently Asked Questions (FAQ)

Expert insights regarding OEM custom options, international compliance, and ATB product compatibility.

What are the main advantages of Wolong's acquisition of the ATB Group for international buyers?
The acquisition combines ATB's European design engineering (with brands like Morley, Laurence Scott, and Schorch) with Wolong's large-scale manufacturing capacity. This integration allows us to deliver high-performance, custom-engineered motors that meet both ATEX/IECEx standards and strict cost requirements.
Can you custom-manufacture explosion-proof motors to match existing footprint constraints?
Yes. Through our OEM engineering division, we specialize in drop-in replacement motors. By utilizing 3D CAD modeling and multi-physics simulation, we custom-engineer the frame dimensions, shaft extensions, and terminal box locations to match your existing footprint, minimizing piping and baseplate modifications.
How does VPI (Vacuum Pressure Impregnation) improve motor reliability in hazardous areas?
VPI removes air bubbles and voids within the stator windings, replacing them with solid, heat-cured insulating resin. This process increases dielectric strength, prevents moisture ingress, and improves thermal conductivity, allowing the motor to run cooler and resist mechanical stresses.
What certifications are required for exporting explosion-proof electric motors to Australia?
For coal mining and hazardous industrial zones in Australia, motors require recognized testing. Wolong's products are certified under the TESTSAFE and IECEx standards, providing direct regulatory clearance for Australian operations.
What types of cooling systems are available for high-voltage ATB motors?
We offer a variety of cooling options, including IC411 (totally enclosed fan-cooled - TEFC), IC611 (air-to-air heat exchanger), and water-cooled configurations (IC71W), optimizing performance based on environmental conditions and space constraints.