TwisTorr 305 FS Turbo Pump

The TwisTorr 305 FS turbomolecular pump features an entirely new design and advanced connectivity options such as Bluetooth. This 300 L/s connected turbo pump can be driven wirelessly using the Vacuum Link app. The TwisTorr 305 FS turbo pump is ideal for academic research and industrial applications where compression ratio is an important factor. The pump’s low noise and vibration features make it a perfect solution for sensitive instruments, like electron microscopes and surface analysis.


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  • Low noise levels - 41 dB(A) at full speed
  • High compression ratios for light gases
  • Compact size
  • Smart power management
  • Oil-free solution
  • Low-maintenance cost
  • Multiple configurations available for various flange sizes and air/water cooling
  • Two controllers are available to drive the pump operation
  • Full range of accessories
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Pumping speed ISO 100 K / CFF 6”/ ISO 160 K / CFF 8”
N2 250 L/s
He 255 L/s
H2 220 L/s
Ar 250 L/s
Max gas flow rate
N2 250 SCCM
Compression ratio
N2 > 1 x 1011
He > 1 x 108
H2 1.5 x 106
Ar > 1 x 1011
Max foreline pressure tolerance N2 12 mbar
Base pressure with recommended forepump  <1 x 10 -10 mbar
(<1 x 10 -10 Torr)
Inlet flange ISO 100 K, CFF 6”, ISO 160 K, CFF 8”
Foreline flange KF16 NW (KF25 - optional)
Rotational speed 60000 rpm (1010 Hz driving frequency)
Start-up time < 3 minutes (longer when soft start is used)
Recommended forepump Dry pumps: IDP-3 (no gas flow), IDP-7, IDP-10,
Mechanical: DS102, DS302
Operating position Any
Oper. ambient temperature +5 °C to +35 °C
Bakeout temperature Max 80 °C at inlet flange
Lubricant Permanent lubrication
Cooling requirements
Air cooling Natural convection (only with no gas load)
Forced air (5- 35 °C ambient temperature)
Water cooling Minimum flow: 50 l/h (0.22 GPM)
Temperature: +15 °C to +30 °C
Max pressure: 5 bar (75 psi)
Noise pressure level 41 dB(A)
(at 1m at full speed)
Storage temp. -40°C to +70°C
Weight kg (lbs) ISO 100 K    5,84 kg (12,8)
TwisTorr 305 FS CFF 6’’         8,16 kg (17,9)
  ISO 160 K     6,28 kg (13,8)
  CFF 8’’        10.43 kg (22.9)
Compliance with: EN 61010-1
EN 61326-1
EN 1012-2
EN 12100
EN 50581
Machinery Directive 2006/42/EC
Electromagnetic Compatibility Directive
2014/30/EU Directive 2011/65/EU
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