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Ejectors

Vacuum technology

Aventics EBS series ejectors generate vacuum from compressed air using the Venturi principle and are available in nozzle diameters from 5 to 25 mm. The series divides into pneumatically controlled variants (EBS-PI, EBS-PT) and electrically controlled versions (EBS-ET) with NC and NO switching functions. Connection options include DA04, DA06, DA08, DA10 as well as threaded connections M5, G1/8, G1/4, and G3/8. Variants with vacuum monitoring (suffix VE) report the switching status of the gripping system.

The ejector generates vacuum without moving parts, enabling low-maintenance operation at high cycle rates. For rapid blow-off cycles, variants with integrated blow-off port are available that release the suction cup actively and quickly.

TypeControlNozzle mmCharacteristic
EBS-PIPneumatic (internal)5, 7Compact design, DA04 connections
EBS-PTPneumatic (external)5-25Wide nozzle range, DA04-DA10
EBS-ETElectric (NC/NO)5-25Direct PLC integration, internal signal
EBS-PT/ET + VEPneum./elect.5-25Vacuum monitoring function

Nozzle diameter determines the achievable volume flow and maximum suction capacity. For high vacuum forces (large, heavy parts), larger nozzle diameters are required; for small-part gripping tasks, 5-7 mm suffice. The choice between pneumatic and electric control depends on the automation concept: electrically controlled EBS-ET ejectors can be actuated directly from a PLC and do not require an upstream control valve. Variants with VE vacuum monitoring are suitable for safety-relevant handling processes where gripper failure must be detected.

Typical applications: Decentralized vacuum generation on robot grippers and handling axes without a central vacuum unit, parts handling in assembly automation and pick-and-place systems, placement machines in the electronics industry, handling of glass panes and plastic parts in the packaging and printing industries, and sorting and transfer processes in logistics automation.

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What are Aventics ejectors and what industrial applications use these pneumatic vacuum devices?
Aventics ejectors are pneumatic vacuum generators that create vacuum using compressed air through the Venturi principle, eliminating the need for electric vacuum pumps in industrial automation systems. These devices are extensively used in packaging machinery for suction cup handling, semiconductor manufacturing for wafer transport, automotive assembly lines for component positioning, and food processing equipment where oil-free vacuum generation is mandatory. The MSC series ejectors from Aventics integrate directly into pneumatic circuits and provide reliable vacuum generation for pick-and-place operations, material handling systems, and automated production lines across manufacturing industries.
What technical criteria determine the selection of Aventics MSC series ejectors for specific pneumatic applications?
Selection of Aventics MSC ejectors depends on bore diameter ranging from 016mm to 025mm as shown in models like MSC-DA-016-0150 and MSC-DA-025-0200, stroke length typically between 100mm to 200mm, and guide rod configuration including HM-HM for maintenance-free operation or PM-PE for standard applications. Operating pressure requirements typically range from 2 to 10 bar, with vacuum flow capacity directly correlating to the ejector bore size and compressed air consumption. The mounting interface and connection type, indicated by the final designations in the part numbers, must match the existing pneumatic system architecture and space constraints within the automation equipment.
Which international standards and certifications apply to Aventics ejector installations in industrial pneumatic systems?
Aventics ejectors comply with ISO 15552 for pneumatic cylinder dimensions ensuring interchangeability, ISO 5599 for valve mounting interfaces, and EN ISO 13849 for safety-related control system integration in machinery applications. The devices meet IP65 ingress protection ratings for dust and water resistance in industrial environments, while materials and sealing systems conform to RoHS directive requirements for lead-free construction. ATEX certification applies to specific models intended for explosive atmosphere applications, and all ejectors satisfy EN 60204 electrical safety standards when integrated with electronic vacuum switches or pressure monitoring systems in automated production equipment.
How do the different Aventics MSC ejector series variants like HG-HM, HG-PM/PE, and HG-EM differ in construction and application suitability?
The MSC-HG-HM series features maintenance-free magnetic piston detection with integrated permanent magnets for position sensing, while the MSC-HG-PM/PE variant combines pneumatic cushioning with electronic position feedback for precise control applications. The MSC-HG-EM series incorporates electronic position monitoring with adjustable switching points and LED status indication for complex automation sequences. The HG-EE variant provides dual electronic sensors for redundant position confirmation in safety-critical applications, with each series maintaining identical stroke lengths and bore diameters but differing in sensing technology and maintenance requirements for specific industrial automation needs.
What installation requirements and system compatibility factors apply to Aventics ejector integration in pneumatic systems?
Aventics MSC ejectors require G1/8 or M5 threaded compressed air connections with filtered, oil-free air at 2-10 bar working pressure, and mounting configurations accommodate both rod-end and clevis mounting using standard ISO 15552 dimensions. The devices integrate with 24VDC control systems through M8 or M12 connector interfaces for sensor feedback, while vacuum connections typically use 4mm to 8mm push-in fittings compatible with standard polyurethane tubing. Installation clearances must accommodate the full stroke length plus 20mm service access, and the ejector mounting orientation affects vacuum performance with vertical mounting preferred for optimal air flow and condensate drainage in humid operating environments.
What safety ratings and operating parameter limits define Aventics ejector performance in industrial environments?
Aventics MSC ejectors operate within -10°C to +60°C ambient temperature range with IP65 ingress protection against dust and water jets, while maintaining consistent vacuum performance across working pressures from 2 to 10 bar with maximum 16 bar proof pressure rating. The devices withstand 2G vibration resistance per IEC 60068-2-6 and provide 10^6 operational cycles minimum service life under standard industrial conditions. Safety integration follows EN ISO 13849-1 Category 3 requirements when dual sensor configurations are implemented, with vacuum monitoring systems providing fail-safe operation detection and automatic compressed air supply shutoff in case of system malfunction or excessive vacuum loss.
What maintenance intervals and inspection procedures ensure reliable operation of Aventics ejector systems?
Aventics ejectors require quarterly visual inspection of air connections and vacuum tubing for wear or damage, with compressed air filter replacement every 6 months or after 1 million cycles depending on air quality and operating conditions. Annual calibration of vacuum switches and position sensors ensures accurate feedback signals, while the maintenance-free MSC-HG-HM series requires only external cleaning and connection torque verification every 12 months. Preventive replacement intervals typically extend to 5 million cycles or 3 years for standard applications, with vacuum performance testing recommended every 6 months using calibrated vacuum gauges to verify consistent suction capacity and response times meet original specifications.