High Land has developed high level portable hydraulic tester and hydraulic 
comprehensive test stand, , by depending on its own research and deriving
 international advanced technology of processing and manufacturing similar 
equipment. Portable Hydraulic Tester fills the gap in domestic hydraulic field 
and getting national patent. Hydraulic Test Bench sells abroad. Power Recovery 
Test Bench has reached word level and its power recovery can reach above 72%.
 For the production of hydraulic pump and motor, we produce the key components
 using imported material. Excellent producing technology, high product quality and 
fine after-sale service win praise of its wide customers. 
 

                                Series 90 Axial Piston Pumps
                                  Technical Information
                                  General Description

Series 90 Family of               Series 90 hydrostatic pumps and motors can be applied together or combined with 
Pumps and Motors                  other products in a system to transfer and control hydraulic power. They are intended for 
                                  closed circuit applications.

                                  •    Series 90 – advanced technology
                                  •    Seven sizes of variable displacement pumps
                                  •    Proven reliability and performance
                                  •    Compact, lightweight
                                  •    Worldwide sales and service
                                  •    PLUS+1™ compliant controls and sensors

                                  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.