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Product catalogue

Vacuum Generators

Efficient vacuum ejectors – single- and multi-stage generators available as individual, manifold-mounted vacuum units, or systems for vacuum pumps

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JSY1000-E
NEW

JSY1000-E

  • Combination manifold for vacuum and positive pressure
  • Energy-saving function, air is supplied and exhausted intermittently when vacuum decreases
  • Fieldbus communications for both valves and ejectors that support fieldbus communication, EtherNet/IP, EtherCAT, IO-Link & PROFINET compatible
  • With pilot air control unit
  • Up to 24 stations combined as up to 12 valves and 12 ejectors.

ZHV
NEW

ZHV

  • Discharge flow rate up to 6820 l/min
  • Suction flow rate up to 5270 l/min with a vacuum pressure of -6 kPa
  • Fluid passage diameters [mm]: Ø 13, Ø 21.6, Ø 30 and Ø 42
  • Possibility to adjust the suction and discharge flow rate
  • Compact and lightweight design
  • Air-driven, maintenance-free.

ZK2*A

ZK2*A

  • Advanced vacuum unit (ejector/pump/manifold systems) with low noise and high efficiency options.
  • Energy saving digital vacuum switch: Intermittent energising (supply/exhaust) only when vacuum decreases.
  • More efficient 2-stage ejector: Air consumption 30% reduced.
  • Dual 2 port valve (release valve/supply valve): Can hold vacuum even when the power goes out or is turned off. Prevents the sudden dropping of workpieces.
  • All-in-one design with integrated components to make it compact and lightweight.
  • Control and monitor up to 32 outputs via a wide variety of serial interface communication protocols
    • EX260 Compatible protocols: IO-Link, DeviceNet, PROFIBUS DP, CC-Link, EtherNet/IP™, EtherCAT, PROFINET, Ethernet POWERLINK
    • EX500 Compatible protocols: Getaway decentralised system
    • EX600 Compatible protocols: DeviceNet, PROFIBUS DP, CC-Link, EtherNet/IP™, EtherCAT, PROFINET, wireless, compatible wireless base.
  • Retrofitting of vacuum sensor and manifold rail mounting bracket allowed.

JSY & ZK2*A

JSY & ZK2*A

  • Integrated manifold with centralised electrical wiring for vacuum ejectors and valves
  • Wide variety of serial interface communication protocols for remote batch setting/monitoring
  • Up to 28 stations, configurations combined with a maximum of 24 valves and 8 vacuum ejectors
  • High flow rate in a compact valve body: up to 567 l/min
  • Suction flow rate up to 67 l/min with a vacuum pressure of -91 kPa.

ZKJ

ZKJ

  • Combination manifold for vacuum and positive pressure
  • PROFINET, EtherNet/IP™, EtherCAT and IO-Link communication for remote batch setting/monitoring
  • Up to 16 ejectors in a single manifold
  • Energy saving function, with up to 90 % air consumption reduction
  • Suction flow rate up to 74 l/min with a vacuum pressure of -89 kPa
  • Prevents work pieces from dropping suddenly when the power goes out or is turned off
  • Exhaust sealing function for the quick release of workpieces
  • IP65 enclosure and M12 connector.

ZL1/3/6

ZL1/3/6

  • Energy-saving, large flow rate, 3-stage diffuser construction ejector
  • Energy saving function selectable, with reduction of up to 90%
  • Suction flow rate up to 600 l/min, increased by 250% compared to one-stage ejectors
  • Supply valve/release valve combinations
  • Exhaust specifications: built-in silencer (standard), port exhaust
  • Vacuum pressure sensor options: digital vacuum pressure switch, vacuum pressure gauge, vacuum adapter
  • All-in-one design with integrated components to make it compact and lightweight.

ZQ*A

ZQ*A

  • Energy-saving function, with up to 90% air consumption reduction
  • Compact and lightweight solution, 10 mm width and weight as low as 60 g
  • Suction flow rate up to 22 l/min with a vacuum pressure of -80 kPa
  • Reduced power consumption: 0.4 W
  • Vacuum release pressure from 0 MPa
  • Copy function for up to 10 units.

ZU*A

ZU*A

  • In-line type vacuum ejector. Compact and lightweight
  • Suction flow rate up to 16 l/min
  • Maximum vacuum pressure: -90 kPA
  • Nozzle diameters: 0.3, 0.4, 0.5 and 0.7 mm
  • Piping variations. Oval type one-touch fittings: Ø 4 and 6 mm. Screw-in connections: Rc 1/8.

ZH*A

ZH*A

  • Body ported type/ Box type vacuum ejector. Compact and lightweight
  • Suction flow rate up to 155 l/min
  • Nozzle diameters: 0.5, 0.7, 1, 1.3, 1.5, 1.8 and 2 mm
  • Multiple piping variations: One-touch fittings and screw-in connections (G/Rc/NPT)
  • 4 mounting types: direct, standard bracket, L-bracket or DIN rail.

ZH**-X267, Vacuum Ejector, All Stainless Steel

ZH**-X267, Vacuum Ejector, All Stainless Steel

  • All stainless steel (SCS13: Equivalent to stainless steel 304).
  • Sealant not required.
  • Maximum operating temperature: 260°C.
  • Grease-free.

ZB

ZB

Requests for a vacuum unit with fast workpiece absorption and improved transfer application performance have now been answered with the launch of our new compact vacuum ejector and pump unit - Series ZB. Developed initially for wafer and chip transfer applications, Series ZB is around 25% smaller than our alternative vacuum units and it´s also considerably lighter – at only 46g for a single unit without sensor. Thanks to these reductions in size and weight, the ZB unit can now be mounted directly onto a machine´s moving component and as close as possible to the transfer workpiece - dramatically improving the vacuum absorption performance. Series ZB has also been constructed with separate vacuum and pressure paths which effectively reduce the chance of dust collecting in the filter element being discharged into the surrounding atmposphere via the units exhaust. Additional ZB features and options include a supply valve with latching specifications, a digital vacuum switch, with copy function, where up to 10 switches can be set simultaneously thereby saving installation time and potentially annoying individual input setting mistakes and the use of simple one-touch-fittings to connect a suction filter and silencer.

ZM

ZM

The ZM series is an all-in-one vacuum generator, complete with internal suction filter, exhaust silencer, supply and break valve, and vacuum switch. Its dual-stage nozzle design increases suction flow by 40% over single-stage generators, yet its compact size makes it suitable for many different applications. ZM series generators also boast a strong vacuum break pressure for quick cycle times. Available in standalone or manifold configurations.

ZX

ZX

This product is being discontinued and will be replaced by ZK2-A series.
The ZX is a single-stage vacuum generator. The modular design allows the user to choose only the components needed for the application. The ZX is available with a combination of generator unit, supply/release valve unit, pressure switch unit, and suction filter unit. Order without the generator unit for use as a filter and valve assembly for house vacuum systems. Special function plates allow the use of shop air to create the vacuum, and nitrogen for the blow-off. Available in standalone or manifold configurations.

ZR

ZR

The larger ZR is a single-stage vacuum generator. The modular design allows the user to choose only the components needed for the application. The ZR is available with a combination of generator unit, supply/release valve unit, pressure switch unit, and suction filter unit. Order without the generator unit for use as a filter and valve assembly for house vacuum systems. Special function plates allow the use of shop air to create the vacuum, and nitrogen for the blow-off. Available in standalone or manifold configurations.

ZK2

ZK2

  • This product is being discontinued and will be replaced by ZK2-A series.
  • Advanced vacuum unit (ejector/pump/manifold systems) with low noise and high efficiency options.
  • Energy-saving digital vacuum switch: Intermittent energizing (supply/exhaust) only when vacuum decreases.
  • More efficient 2-stage ejector: Air consumption 30 % reduced.
  • Dual 2 port valve (release valve/supply valve): Supply valve with self-holding function. Interlink between supply valve and release valve.
  • All-in-one design with integrated components to make it compact and lightweight.

ZL

ZL

  • This product is being discontinued and will be replaced by ZL1/3/6 series
  • Energy-saving, large flow rate, 3-stage diffuser construction ejector
  • Suction flow rate up to 200 l/min, increased by 250% compared to one-stage ejectors
  • Supply valve/release valve combinations
  • Exhaust specifications: built-in silencer (standard), port exhaust
  • Vacuum pressure sensor options: digital vacuum pressure switch, vacuum pressure gauge, vacuum adapter
  • All-in-one design with integrated components to make it compact and lightweight.

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Types of vacuum generators and key differences

Vacuum generators can be classified into three main categories: according to the number of vacuum stages, the physical operating principle, or the mounting configuration.

In addition, SMC offers “all-in-one” vacuum generators that integrate the generator with the vacuum control valve and blow-off valve. These units can also incorporate additional components such as vacuum switches and filters, making them particularly suitable for robotic applications.

Vacuum generators by number of stages: single and multiple

A distinction can be made between single-stage and multi-stage vacuum generators:

  • Single-stage vacuum generators produce vacuum in a single stage.
  • Multi-stage vacuum generators achieve higher vacuum levels at lower supply pressures compared with single-stage units, making them more energy efficient.

Venturi vacuum ejectors

Vacuum generators based on the Venturi principle operate in accordance with Bernoulli’s law. When compressed air passes through a constricted nozzle, its velocity increases while the static pressure decreases. This pressure drop creates a low-pressure zone that draws in the surrounding air, thereby generating suction.

Venturi vacuum generators are suitable for the majority of industrial applications thanks to their simple design, reliability and versatility. However, for more specialised tasks — such as handling delicate, fragile or porous components — alternative vacuum technologies, including non-contact gripping systems, may provide a more appropriate solution.

Vacuum generators by mounting type: single and manifold-mounted

Vacuum generators are available in individual or manifold-mounted configurations.

  • Individual vacuum generators are ideal where only a single unit is required.
  • Manifold-mounted vacuum generators are recommended where multiple units need to be grouped and centrally activated via industrial communication systems, such as fieldbus networks.

SMC also offers hybrid systems that integrate vacuum generators and valves into combined manifold assemblies. These simplify the control of applications involving both positive and negative pressure, helping to streamline machine design.

Such manifolds enable flexible remote vacuum control via multiple industrial communication protocols, including IO-Link.

Applications of vacuum generators

Vacuum generators are highly versatile and suitable for a wide range of applications, including:

  • Installations with low vacuum flow requirements
  • Occasional use of one or more suction cups in handling operations
  • Environments where no central vacuum installation is available

What benefits do vacuum generators offer compared with other vacuum generation systems?

Industrial vacuum generators offer several advantages, including:

  • Maintenance-free operation and greater installation flexibility compared with other systems, as they contain no rotating components.
  • They can be installed in any position and at any point within the application.
  • They provide a fast response time and rapid vacuum build-up.
  • Compact and lightweight design.
  • No heat generation during operation.
  • Integrated energy-saving functions.
  • Additional built-in features to facilitate monitoring and control.

How to select a vacuum generator?

To select the most suitable vacuum generator, several factors must be considered.

Firstly, the shape and dimensions of the nozzle and diffuser are critical, as they determine the maximum suction flow rate and the achievable vacuum pressure.

  • A smaller nozzle diameter achieves higher vacuum levels but lower flow rates.
  • A larger nozzle diameter provides higher flow rates but lower maximum vacuum levels.

When sizing a vacuum generator, it is essential to consider:

  • The required suction flow rate
  • The target final vacuum level

The response time achieved in the application will depend on both the suction flow rate and the pipe cross-section.

When determining the appropriate suction flow, it is important to account for potential leakage at the workpiece. Leakage will vary depending on geometry, surface condition and porosity, among other factors.

For systems prone to leakage, SMC recommends operating at lower vacuum pressures and selecting vacuum generators with high suction capacity in order to compensate effectively for system losses.