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Rexroth A4VSO45 71 125 180 A4VSO250 A4VSO355 A4VSO250DRG/30R-PPB13N00 Hydraulic pump for excavatorFiltration of the hydraulic fluid Finer filtration improves the cleanliness level of the hydraulic fluid, which increases the service life of the axial piston unit. A cleanliness level of at least 20/18/15 is to be maintained according to ISO 4406. At a hydraulic fluid viscosity of less than 10 cSt (mm2/s) (e.g. due to high temperatures during short-time duty) at the drain port, a cleanliness level of at least 19/17/14 according to ISO 4406 is required. For example, the viscosity corresponds to 10 cSt (mm2/s): – HLP 32 a temperature of 163 °F (73 °C) – HLP 46 a temperature of 185 °F (85 °C) |




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