Edwards XDS35i Scroll Vacuum Pump


XDS35i Scroll Vacuum Pump

The XDS35i pump has the same innovative bearing shield design as the XDS5 and XDS10. This isolates the vacuum environment from all forms of lubricant, not only making it totally dry but hermetically sealed. The shield also protects the bearing from any process vapours. Gas ballast allows vapour to be handled and opens up the range of applications to many that were previously unsuited to scroll pumps.
The inverter drive controls the motor characteristics and ensures the pump always runs at optimum speed.
XDS35i Scroll Vacuum Pump
Noise Level < 57 dB
Vacuum Pump Type Scroll Pump
Weight 48 kg
Additional Specifications Displacement 50/60Hz: 43 m³h^-1 / 25 ft3min^-1
Peak pumping speed 50/60Hz: 35 m³h^-1 / 21 ft3min^-1
Ultimate vacuum (Total pressure): 1 x 10^-2 mbar / 8 x 10^-3 Torr
Max inlet pressure for water vapour: 35 mbar / 23 Torr
Max water vapour pumping rate – GB I: 70 gh^-1
Max water vapour pumping rate – GB II: 240 gh^-1
Max allowed outlet pressure: 1 bar gauge
Max allowed inlet and GB pressure: 0.5 bar gauge
Motor power: 0.52kW
Nominal rotation speed: 1800 rpm
Inlet flange: NW40
Exhaust flange: NW25
Vibration: <4.5mms ^-1
Leak tightness (static): <1 x 10^-6 mbar ls^-1
Operating temperature range: 10 to 40 °C / 50 to 104 °F


Bearing shield
  • Totally clean and dry vacuum
  • No bearings or grease in the vacuum space
  • No shaft seals, no bearing purges
  • Simple single sided scroll design
  • Tip seal change in 20 minutes
  • No special tools required

Integral IEC 60320 connector
  • No customer wiring

Inverter driven motor with external change-over switch
  • Simple voltage selection, less world-wide stock

Selectable gas ballast position
  • No permanent gas ballast leak
  • Large water vapor handling capacity

Inverter driven motor (XDS35i)
  • Worldwide voltage, low power consumption
  • Pump overload protection
  • Remote on/off control capability
  • Remote speed selection capability

All pumps externally approved to EN61010, CSA C22.2 1010, UL 61010 standards
  • Ease of incorporating pump into approved systems, safe product

Manufactured under
  • ISO 9001 standard
  • High quality product

Manufactured under ISO 14001 standard
  • Environmentally friendly processes




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Bearing replacement - is it possible?

I know this was asked a number of years ago, but wondering if there was an update/newer information out there. I have an Edwards XDS35i that is overheating and not pumping down to a good pressure. I am thinking I will buy one of the major repair...

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