Datasheet

Model Selection
 Glossary of Terms
DescriptionTerms
(Max.) suction flow rate
Volume of air taken in by the ejector. The maximum value is the volume of air taken in
without having anything connected to the vacuum port.
Maximum vacuum pressure
The maximum value of the vacuum pressure generated by the ejector
Air consumption The compressed volume of air consumed by the ejector
Standard supply pressure
The optimal supply pressure for operating the ejector
Exhaust characteristics
Flow-rate characteristics
The relationship between the vacuum pressure and the suction flow rate when the supply
pressure to the ejector has been changed.
The relationship between the vacuum pressure and the suction flow rate with the standard
supply pressure supplied to the ejector.
Vacuum pressure switch Pressure switch for verifying the adsorption of a workpiece
Suction verification switch
Switch, based on an air pressure bridge, for verifying the adsorption of a workpiece.
It is used when the adsorption pad and the nozzle are extremely small.
(Air) supply valve Valve for supplying compressed air to the ejector
(Vacuum) release valve
Valve for supplying positive pressure or air for breaking the vacuum state of the
adsorption pad
Flow adjustment valve
Valve for adjusting the volume of air for breaking the vacuum
Release pressure
Pressure for breaking the vacuum
Pilot pressure Pressure for operating the ejector valve
External release
The action of breaking the vacuum using externally supplied air instead of using the
ejector unit
Vacuum port Port for generating vacuum
Exhaust port
Port for exhausting air consumed by the ejector, and air taken in from the vacuum port.
Supply port Port for supplying air to the ejector
Back pressure Pressure inside the exhaust port
Leakage
The entry of air into the vacuum passage, such as from an area between a workpiece and
a pad, or between a fitting and a tube. The vacuum pressure decreases when leakage
occurs.
Response time
The time from the application of the rated voltage to the supply valve or release valve,
until V port pressure reaches the specified pressure.
Average suction flow rate
The suction flow rate by the ejector or pump for calculating the response speed. It is to
of the maximum suction flow rate.
Conductive pad A low electrical resistance pad for electrostatic prevention measure
Vacuum pressure
Any pressure below the atmospheric pressure. When the atmospheric pressure is used as
a reference, the pressure is presented by –kPa (G), and when the absolute pressure is
used as a reference, the pressure is represented by kPa (abs).
When referencing a piece of vacuum equipment such as an ejector, the pressure is
generally represented by –kPa.
Ejector
A unit for generating vacuum by discharging the compressed air from a nozzle at a high
speed, based on the phenomenon in which the pressure is reduced when the air around
the nozzle is sucked.
Air suction filter
Vacuum filter provided in the vacuum passage for preventing the dust intrusion into the
ejector, vacuum pump, or peripheral equipment
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