A hydraulic intensifier and/or booster (HIB) for transforming an incoming hydraulic pressure at a relative low-pressure to an amplified outgoing hydraulic pressure at a relative high-pressure. The HIB comprising a hydraulic motor and an intensifying mechanism, possibly a hydraulic screw pump mechanism, wherein the hydraulic motor being arranged from the incoming hydraulic pressure to output power. The intensifying mechanism being arranged to receive the outputted power from the hydraulic motor and transform it to linear power of a piston and via the piston being arranged to build the amplified outgoing hydraulic pressure.
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