TÜV has certified that the Lafert range of brushless servo motors is suitable for operation in potentially explosive atmospheres in accordance with the ATEX Directive 2014/34/EU. The ATEX-certified servo motors are designed for applications where flammable gases or combustible dusts may be present occasionally, ensuring safe and reliable operation under defined conditions.
The ATEX certification complies with international standards EN 60079-0, EN 60079-15, and EN 60079-31, and covers Category 3G (gas) and Category 3D (dust) applications for Zone 2 and Zone 22, with IP65 protection. The motors are certified with protection concepts Ex ec for gas atmospheres and Ex tc for dust atmospheres, with controlled surface temperatures suitable for hazardous-area operation.
ATEX servo motors are available with torque ratings from 0.25 Nm to 300 Nm. They retain the same mechanical dimensions and mounting interfaces as the standard Lafert brushless servo motor range, allowing seamless integration into existing machine designs. Performance parameters are adapted to meet ATEX thermal and safety requirements, ensuring compliance while preserving precise and stable servo control.
Main Advantages
300 Nm270 mmUP TO 6000 rpm
- Torque range 0.25 to 300 Nm
- Rated speed up to 6000 rpm
- Superior performance, high torque accuracy
- High overload capability
- Compact design with high power density
- Forced ventilation (fan cooling) option available
- IP65 protection; TENV construction
- cURus certification
- Special rotor balancing grade and inertia
- One cable solution
- Customised flange and special shaft
- Wide range of transducers:
resolver, incremental and absolute encoders
- All motors available with brake as an option
ATEX Servo Motors are used in industrial applications where precise motion control is required in environments with potentially explosive gas or dust atmospheres.
Zone 2 and Zone 22 areas are environments where explosive gas or dust atmospheres may occur occasionally during normal operation. ATEX Servo Motors are designed and certified to limit ignition risks by controlling surface temperature, electrical behaviour, and enclosure protection, ensuring safe operation in these hazardous conditions while maintaining precise motion control.
For Zone 2 (gas) applications, Lafert ATEX Servo Motors use the Ex ec (increased safety) protection concept, which prevents arcs, sparks, and excessive temperatures during normal operation.
For Zone 22 (dust) applications, the motors use Ex tc (protection by enclosure), which prevents dust ingress and limits surface temperature to avoid ignition of combustible dust.
ATEX certification requires controlled thermal behaviour and defined operating limits. Lafert ATEX Servo Motors are engineered to meet these requirements while preserving stable torque output, smooth motion, and accurate position control. Mechanical interfaces remain unchanged, allowing integration without redesigning the machine.
ATEX Servo Motors are designed to work with compatible servo drives installed outside the hazardous area or in accordance with ATEX installation standards. Proper system design, including drive location and cable routing, must follow applicable installation regulations such as EN IEC 60079-14.
Key selection parameters include required torque and speed, duty cycle, ambient temperature, type of explosive atmosphere (gas or dust), and thermal margins. Correct sizing is essential to ensure surface temperature limits are respected while maintaining stable and reliable motion performance.
Yes. Lafert ATEX Servo Motors are designed for S1 continuous duty within the limits defined by the ATEX certification. Continuous operation must be evaluated considering load profile, ambient conditions, and cooling to ensure compliance with temperature class requirements.
Yes. ATEX Servo Motors retain the same mechanical dimensions, flange sizes, shaft geometry, and mounting interfaces as standard Lafert brushless servo motors, simplifying machine design, replacement, and retrofit.
ATEX Servo Motors are available with standard feedback systems such as resolvers and encoders. Feedback selection influences positioning accuracy, control stability, and system integration, and should be chosen based on application requirements and drive compatibility.
Yes. An optional holding brake is available and is intended for parking and load-holding purposes only. The brake is not designed for dynamic stopping and should be used in accordance with Lafert’s installation and safety instructions.
Brochure ATEX Servo Motors
Manual Instructions ATEX Servo Motors
