A10VSO 45 DFR/31R-PPA12N00 A10VSO 45 DFR/31L-PPA12N00 A10VSO 45 DFR1/31R-PPA12N00 A10VSO 45 DFR1/31L-PPA12N00 A10VSO 45 DFLR/31R-PPA12N00 Rexroth German piston pump
hydraulic system | high pressure | electric | cast iron | construction machinery |
hydraulic oil | variable | vertical | Rexroth | plunger pump | hydraulic | |
Edge standing | wooden box | nationwide | pipeline pump | Edge standing | plunger pump | |
Used in the mechanical industry | | | | |

A10VSO28DFLR/31R-PPA12N00-SO385 |
A10VSO28DFLR/31R-PPA12K51 |
A10VSO28DFR1/31R-VSA12N00 |
A10VSO28DFLR/31R-VPA12G30 |
A10VSO28DR/31L-PPA12L40 A10VSO 45 DFR/31R-PPA12N00 | A10VSO 45 DFR/31L-PPA12N00 | A10VSO 45 DFR1/31R-PPA12N00 | A10VSO 45 DFR1/31L-PPA12N00 | A10VSO 45 DFLR/31R-PPA12N00 | A10VSO 45 DFLR/31L-PPA12N00 | A10VO 45 DFR/31R-VSC12K01 | A10VO 45 DFR/31L-VSC12K01 | |
FAQ;
A10VSO45 is an axial piston variable displacement pump with a swashplate structure, specifically designed for open-circuit hydrostatic transmission systems. Its working principle relies on adjusting the tilt angle of the swashplate: as the swashplate angle changes, the stroke of the pistons (which reciprocate in the cylinder block) is modified, thereby controlling the output flow of the pump.
The rated pressure of the A10VSO45 pump is 280 bar, and the peak pressure (for short-term, intermittent operation) can reach up to 350 bar. Note that peak pressure should not be used continuously to avoid premature wear or damage to internal components.
Common causes include three main categories:
- Inadequate suction: This may result from excessive resistance in the suction line (e.g., undersized or overly long hoses), insufficient oil replenishment (e.g., pump speed exceeding the rated limit, low oil level in the tank), air leakage in the suction line (loose connections or damaged seals), or a clogged suction filter.
- Excessive internal leakage: Possible issues include scratches on the valve plate, poor sealing of the check valve in the variable displacement mechanism, or sand holes/abrasion marks on the mating surfaces of the pump body and valve plate.
- Mechanical misalignment: The swashplate may be set to a minimum tilt angle (resulting in minimal displacement), or the motor may be running in the reverse direction (preventing normal piston movement).