Rocking Piston Dry Vacuum Pump DOP Series

The DOP series rocking piston vacuum pump is available from 44 L/min up to 140 L/min for vacuum and at 84 L/min in the DOP-80P pressurized version. The ideal small pump for vacuum chucks, tweezers and automatic transfer applications. The DOP also does double duty as a small compressor. 


  • Compact size with large displacement.

  • Dry vacuum pump using no oil in the gas contact area.

  • Rich lineup available to suit your application.

  • Safety design with built-in automatic reset type thermal protector.

  • Operation is possible from atmospheric pressure.

  • Continuous operation in all pressure zones is possible.

  • Simple structure and easy maintenance.


  • Vacuum chuck, vacuum tweezers.

  • Absorption and transfer of automatic machines.

  • Vacuum packing printing machines.

  • Tip mounter.

  • Medical equipments.

  • Oxygen generator.


  Unit 50Hz 60 Hz
Actual Pumping Speed L/min 40 44
Ultimate Pressure *1 Pa (kPa) 1.2×103 (-100.1)
Motor*2   Single phase, 100V, 210W, 4P,Capacitor run
Full load current A 3.2 3.9
Weight kg 7.0
Inlet,Outlet pipe diameter mm O.D.Φ9×I.D.Φ5 (Rc 1/4)
Ambient Temperature °C 7~40
Overall diemensions mm 160(W)×270(L)×179(H)

※1:The gauge pressure display is shown in () of Ultimate pressure.
※2:Power supply plug and Power supply code are not included.

Corresponding certificate / Voltage

Model Applicable standard CE
Declartion of confirmity






●:Standard、○:Option、-:Not Applicable


1. The pump is stopped when the lord is operated, and the pump can’t be operated just after that. In this case, please return the atmospheric pressure the inside of the pump.

2. The pump will not often operate normally if it is used with corrosive gases, organic solvents, liquids, or condensed gases (eg steam). The pump will not often operate normally if it is used with gases containing particles or dust etc.

3. Cup packing that is the sliding material of the pump will be worn out by operating, and microscopic particles result from wear of component. Moreover, wear is promoted because the sliding material is weak in moisture, and the pump life decreases if the vacuum gas is moisture. Please suck neither moisture nor condensed gas (steam etc.).

4. It is a pump only in the room. Please do not set it up in the place, that rain and water splash, and outdoors.

5. When securing the pump to a device etc., be sure to attach anti-vibration rubber. Mounting screw size of anti-vibration rubber is M5 x P0.8. Also, the length of the anti-vibration rubber screw mounted on the pump side should not exceed 10 mm.

Pumping Speed Curve

Dimension / Drawing