China Supply High Quality Hydraulic Axial Variable Displacement Piston Pump A4VSO Series For Excavators

For extensive information on the selection of hydraulic fl uids and application conditions please consult our data sheets RE 90220 (mineral oils), RE 90221 (ecologically acceptable fl uids) and RE 90223 (HF-fl uids). The variable pump A4VSO is suitable for operation on HF-fl uids. (HFA, HFB, and HFC: EA4VSO or A4VSO....F HFD: standard version A4VSO with FKM seals) However, limitations to the technical data, according to RE 90223 must be observed.

On certain selected HFC-fl uids, pump sizes 125...355, executed in accordance to RE 92053 can be operated with the same pressures and speeds as on mineral oil. On operation with HFA and HFB-fl uids, limitations of the technical data must be observed according to RE 90223. On operation with rolling oil please consult us. When ordering, please state the fl uid to be used. Operating viscosity range Within the operating viscosity range between 16...100 mm2/s the units can be operated without limitations of the technical data. In order to obtain optimum effi ciency and service life, we recommend that the operating viscosity (at operating temperature) be selected in the range