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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 Specification
GCD-051X GCD-136X GCD-201X
50Hz 60Hz 50Hz 60Hz 50Hz 60Hz
Model
Rotary vane (2 vanes)
Pumping speed
(L/min)
50 60 135 162 200 240
G.V.
close
6.7
×
10
-1
Ultimate
pressure
(Pa)
G.V. Open
6.7
V
100 100/110 100 100/110 100 100
1-phase
W(Pole) 200(4)
400(4)
550(4)
V
200 200/220 200 200/220
Motor
3-phase
W(Pole)
400(4) 700(4)
1-phase 5.6(100V)
4.8(100V)
5.1(110V)
5.6(100V)
5.4(100V)
5.1(110V)
7.5(100V)
7.2(100V)
7.0(110V)
Full-load
current
(A)
3-phase 1.9(200V)
1.8(200V)
1.7(220V)
3.5(200V)
3.0(200V)
2.9(220V)
1-phase 1,440(100V)
1,730(100V)
1,740(110V)
1,425(100V)
1,715(100V)
1,725(110V)
1,420(100V)
1,715(100V)
1,725(110V)
Revolution
(r/min)
3-phase
1,440(200V)
1,730(200V)
1,740(220V)
1,430(200V)
1,705(200V)
1,730(220V)
Standard
oil
SO-M
Oil
Oil amount
(mL)
500
～
800
1,000 1,100
Note 1: The ultimate pressure values in the above table are indicated by a Pirani 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: SO-M
Note 3: “G.V.” is an abbreviation for gas ballast valve.
