Industrial explosions remain a major threat, with severe human and material consequences. Preventing this risk requires controlling the formation of explosive atmospheres (ATEX) and choosing certified equipment right from the design stage of production processes.
In this guide, discover why and how ATEX-certified pneumatic motors are becoming the safest and most efficient alternative to electric motors in hazardous environments.
An electric motor converts electromagnetic energy into mechanical energy. They are widely used in industry (pumps, conveyors, fans) and come in multiple sizes and configurations. However, their use in explosive atmospheres poses major challenges.
Spark hazards during start-up or insulation failure
Overheating risks that can ignite gases or dust
Sensitivity to harsh environments (dust, humidity, high temperatures, electromagnetic fields)
Complexity and cost of ATEX-compliant control and protection systems
High maintenance and inspection costs to maintain certification
Potential accidents: fires, explosions, electrocution
An ATEX (ATmosphères EXplosibles) is a mixture of air and flammable substances (gas, vapors, dust) that may ignite upon contact with a spark or hot surface. Examples include:
Gases: methane, propane, hydrogen
Vapors: ethanol, acetone
Dust: aluminum, grain, coal
In the EU, equipment must comply with Directive 2014/34/EU and the Machinery Directive 2006/42/EC, ensuring it meets strict safety requirements for explosive atmospheres.
A pneumatic motor uses compressed air expansion to generate mechanical power. This technology is valued for its safety, simplicity, and reliability in industrial settings.
Pneumatic motors can be designed and tested to meet ATEX certification, ensuring safe use even in explosive environments.
No spark risk: no electrical components to ignite flammable gases
Self-cooling effect: air expansion cools the motor during operation
Simple and cost-effective: no complex wiring or expensive protective devices
Reliable in extreme conditions: resistant to dust, humidity, and high heat
Multi-industry compatibility: oil & gas, food processing, water treatment, chemical plants, mining
| Criteria | Electric Motor | Pneumatic Motor (ATEX) |
|---|---|---|
| Spark risk | High (electrical arcs) | None (no electricity) |
| Overheating | Possible, needs control | Self-cooling with air |
| Complexity of compliance | High (wiring, shielding) | Low (air network is safe) |
| Maintenance costs | High | Low |
| Suitability in harsh environments | Limited (dust, moisture) | Excellent (robust design) |
| Energy source | Electricity | Compressed air |
| Cost to achieve ATEX compliance | High | Moderate/Low |
Making an entire electrical installation ATEX-compliant can be complex and expensive (special cabling, protective enclosures, periodic inspections).
By contrast, an air network is inherently safe: even in case of leaks or ruptures, there is no risk of sparks or ignition.
Modec designs and manufactures ATEX-certified pneumatic motors tailored to the most demanding industrial environments.
Key advantages:
ATEX-certified for optimal safety
Broad torque and speed range for multiple applications
Proven reliability across oil & gas, chemical, and energy sectors
Technical and marketing support for distributors and industrial clients
Explore Modec’s ATEX pneumatic motor range
Are all pneumatic motors ATEX-certified?
No. Only those tested and labeled under ATEX standards can be used in explosive atmospheres.
Which industries benefit most from ATEX pneumatic motors?
Oil & gas, food processing, water treatment, chemicals, and metallurgy.
Do pneumatic motors consume more energy than electric motors?
While air networks require compressors, the safety and reduced compliance costs make them highly competitive overall.
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