Direct Drive Oil-Sealed Rotary Vacuum Pumps G-101D
Two-stage / with gas ballast valve / with thermal protector / with cord



The oil rotary vacuum pump which had abundant track records and realized budget prices.
The vacuum pump in which it is small and carrying is useful.
Compact size suitable for equipment inclusion.
The motor direct connection type with which a high velocity revolution and a small and big exhaust speed are obtained compared with a belt system.
Low vibration and noise.
A two-stage exhaust system is pressure (good vacuum) lower than an one-stage exhaust system.
The safety design by manual return type thermal protector built-in.


Chemical, science experiment, Analyzer and Laser system.
Backing pumps for the electronic microscope.
Semiconductor equipments, sputtering equipments, vacuum evaporation equipments.
Vacuum dryer, freeze dryer.

  Unit 50Hz 60Hz
Actual Pumping Speed L/min 100 120
Ultimate pressure*1 Pa

0.67 (G.V. closed)

6.7 (G.V. open)
Motor   Single phase, 100V, 400W, 4 poles, Capacitor start & run
Full load current A 6.4 5.9
Oil capacity mL 800
Recommended oil   SMR-100
Weight kg 23
Inlet, outlet pipe diameter mm O.D. dia.27 × I.D. dia.20
Ambient temperature °C 7 – 40
Overall dimensions mm 234(W) × 500.5(L) × 264(H)
*1 : Ultimate pressure is measured by Pirani gauge.

1. Oil is deteriorated with operating, and becomes the factor of performance shortage.
A decrease and the dirt of oil are confirmed, and please regularly add and replace it.
2. Please make a suction side into atmospheric pressure when the pump is stopped.
If it holds with a vacuum state, pump oil will be full in a pump room, and pump oil will flow backwards to the vacuum-chamber side.
3. If operation is performed at high pressure, oil mist is generated at the exhaust side.
4. If dust, moisture, etc. are sucked, it will become a cause of pump failure.
I recommend use of Fore-line trap to mixing prevention of a granular material or moisture.
5. It is not suitable for the pump if operation is performed continuously at a high evacuation pressure of 1kPa or more.
6. There is a risk of explosion. Never block the outlet or operate the pump with equipment mounted at the outlet side that blocks the passage of gas.
Otherwise, the internal pump pressure increases causing the pump to explode, the oil level gauge to protrude or the motor to be overloaded.

Outline Drawing

Pumping Speed Curves


* You can see each option, if you click an option.

Optional Voltage
Voltage Applicable Volt CE Marked TUV Marked cTUVus Marked
Single phase, 100V Standard
Single phase, 115V
Single phase, 200V
Single phase, 220V
Single phase, 230V

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Copyright (C) 2003 ULVAC KIKO, Inc. All Right Reserved. Ver.4.00 (December 2011)
· The dimensions and specifications of the products listed in this site are subject to change without prior notice for improvement of their performance.