Hydac screw pumps

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The Hydac screw pumps are suitable for industrial applications where high reliability and low noise are required. They produce low vibration and are optionally coupled with electrical motors.

Suitable for a variety of hydraulic applications for cooling, fluid transferring and lubrication, the pumps can also be equipped with an optional integrated pressure bypass.

The range is available from 8 to 550 L/min and is suitable for viscosities from 4 up to 2000 mm²/s.

The screw pumps of Hydac are positive displacement rotary pumps with axial flow design. There are only three moving parts. The power rotor is the only drive part that extends outside the case. The idler screws actually act as sealing parts and are turned hydraulically by the fluid being pumped. There is only a rolling action between the drive screw and the idler ones. The rolling action eliminates noise and vibration.