KHA High Vacuum Dry PumpContinuous operation at ultimate pressure (8 kPa or lower).

KHA100-301 / KHA200-301A
KHA400-301A / KHA750-301B

Ultimate Pressure
8 kPa [abs] (max.)
Flow Rate
65 to 400 L/min (60 Hz)
  • Continued operation possible at ultimate pressure (8 kPa).
  • High degree of vacuum, excellent substitune pump for electronic component and small parts handling automated equipment.


Model KHA 100-301-G1 200-301A-G1 400-301A-G1 750-301B-G1
Designed Pumping Capacity (50/60 Hz) ※1 L/min 55/65 120/145 220/260 330/400
Ultimate Pressure ※2 kPa [abs] (max.) 8
Piping Connection Size   Rc 1/4 Rc 3/8
Voltage (50/60 Hz) V 3-phase 200 / 3-phase 200, 220
Standard Motor Current Rating (50/60 Hz) A 0.69/0.6, 0.62 1.56/1.37, 1.36 2.29/2.08, 1.99 3.8/3.4, 3.4
Operating Noise Level (50/60 Hz) ※3 dB 60/61 61/62 63/66 67/70
Built-In Motor kW 0.1 0.2 0.4 0.75
Mass kg 11 13 21 38
  1. Designed Pumping Capacity: Theoretical value calculated from cylinder volume. Refer to "Performance Data" for actual flow rate.
  2. Pump can be continuously operated at the maximum attainable vacuum.
  3. Operating noise level measured on a new pump with the standard built-in ORION motor. Operating noise levels are from a position of 1 m in front of the unit and at a height of 1 m.
  • Working vacuum range: 48 kPa [abs] to ultimate pressure.
  • Maximum operational pressure variation pulse: 13.3 kPa [abs] /s.
  • Models with ductable exhaust available (KHA100A・200A・400A・750A). When ducting off exhaust, the allowable back pressure from the piping is 25 kPa. (This pressure should not be used for any purpose.)
  • Operating environment (inlet air) conditions: air temp: 0 to 40 °℃, humidity: normal levels (65±20%).
  • Due to the high compression ratios found in high-compression pumps, condensation can easily form within the pump. Therefore the following measures should be taken in order to avoid trouble from rust due to condensation: During a trial run (operation of 5 minutes or less, such as a momentary operation or short test run) if the operating pressure goes above 48 kPa [abs], then a dry run of 10 to 15 minutes should be made at a pressure of 48 kPa [abs] at the vacuum side of the pump.
  • Allowable intermittent power supply voltage fluctuation range is ±10% of the specified voltage; allowable sustained supply voltage fluctuation range is ±5% of the specified voltage.
  • Please install an overload protection device (such as a thermal relay). Setting guideline (may vary depending on the specific application): For Three-phase motors, use the current rating listed on the motor nameplate as a guide.
  • See specifications sheet for further details.
  • If detailed specifications are required, please Contact ORION to request a specifications sheet.

External Dimensions(Units:mm)


Performance Data