Rusch screw pumps are self-priming positive displacement pumps to feed lubricating and non-lubricating media.

The pumps of the types RSP and RSPK are characterized by the suction intakes on both sides which permit individual sucking from two different tanks in conjunction with two sliding valves.

The double-flow pumps have been designed with two spindles and are therefore thrust-balanced.Thanks to little clearance between the screw spindles and among them and the casing the pump is affected by wear depending on the medium.

The driving spindle transmits its torque to the secondary spindle. The dimensions of shafts, bearings and gears are over-sized to guarantee a vibration-free operation at any time.