Series 90 hydrostatic pumps and motors can be applied together or combined with
other products in a system to transfer and control hydraulic power. They are intended for
closed circuit applications.
Series 90 variable displacement pumps are compact, high power density units. All
models utilize the parallel axial piston/slipper concept in conjunction with a tiltable
swashplate to vary the pump's displacement. Reversing the angle of the swashplate
reverses the flow of oil from the pump and thus reverses the direction of rotation of the
motor output.
Series 90 pumps include an integral charge pump to provide system replenishing
and cooling oil flow, as well as control fluid flow. They also feature a range of auxiliary
mounting pads to accept auxiliary hydraulic pumps for use in complementary hydraulic
systems. A complete family of control options is available to suit a variety of control
systems (mechanical, hydraulic, electric).
Series 90 motors also use the parallel axial piston/slipper design in conjunction with a
fixed or tiltable swashplate. They can intake/discharge fluid through either port; they are
bidirectional. They also include an optional loop flushing feature that provides additional
cooling and cleaning of fluid in the working loop.
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