Rexroth A4VSO45 71 125 180 A4VSO250 A4VSO355 A4VSO250DRG/30R-PPB13N00 Hydraulic pump for excavator

Filtration 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)