Direct Drive Oil-Sealed Rotary Vacuum Pumps GHD-031

Two-stage / with cord, and switch/with thermal protector


Wide range voltage motor and correspond to CE, cTUVus.
Magnet coupling for no oil leakage from shaft seal and realized longer lifetime.
Integrated check valve below the inlet port for backflow prevention.


Helium leak detector.
Analytical equipment.(GC/MS,ICP/MS,LC/MS)
Laboratory experiment.

  Unit 50Hz 60Hz
Actual Pumping Speed L/min 30 36
Ultimate pressure Pa


Motor   Single phase, 100-120V ,100W , 2 poles, capacitor run
Full load current A 1.85 (100V)
1.80 (110V)
1.89 (100V)
1.71 (120V)
Oil capacity mL 370
Recommended oil   R-2
Weight kg 9.3
Inlet, outlet pipe diameter mm KF-16
Ambient temperature °C 7 – 40
Overall dimensions mm 120(W) x 288.5(L) x 163(H)
*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. If operation is performed at high pressure, oil mist is generated at the exhaust side.
3. 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.
4. This motor houses an automatic returning thermal protector, which may be activated in case of trouble.
The motor will restart automatically when the temperature goes down.
If the thermal protector is activated, switch off the power immediately for safety reason.

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, 100-120V Standard
Single phase, 200-240V

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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.