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2. Outline of the Pump
2.1 Specification
This oil sealed rotary vacuum pump is a rotary vane pump (hereinafter called Gaede type pump)
in which the pump is directly driven by the motor. Since the pump is small, light, and quite
simply constructed, it is easily maintained and repaired.
Table 1 Pump specification
Model G-100D G-100S
Type Sliding vane 2stage Sliding vane 1stage
Pumping speed
(L/min)
50Hz 100
60Hz 120
Ultimate pressure
(Pa)
G. V. C l o s e
6.7×10
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9.3
G. V. O p e n 6 . 7 -
Oil
Standard oil SMR-100
Oil amount
(mL)
800 1,200
Inlet pipe diameter
φ27(Inlet pipe of 40□Flange can be installed in pump)
Outlet pipe diameter Mushroom type (Outlet pipe of G1size screw can be installed in pump)
Weight
(Kg)
Single phase 22.4 21.6
Three phase 22.0 21.0
Note 1: The ultimate pressure values in the above table are indicated by a McLeod gauge. A Pirani
gauge shows values approximately one magnitude higher than those shown by the McLeod
gauge.
Note 2: Vacuum pump oils have different steam pressures, viscosities, and oil properties depending
on the type. Always use the oil sealed rotary vacuum pump oil specified by us. The use of
other oils will affect the pump’s performance.
Specified oil: SMR-100
Note 3: “G.V.” is an abbreviation for gas ballast valve.
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