Rexroth A10VSO140 Series 31 Axial Piston Pump
In large hydraulic systems, this model usually appears after the equipment has already been scaled up. At that stage, flow demand is no longer stable, and multiple actuators tend to run together rather than independently.
The displacement is 140 cc/rev. Rated pressure is around 280 bar, and peak values can reach about 350 bar depending on circuit design. These figures are often treated as reference points rather than strict operating boundaries in real projects.
What engineers usually pay attention to is not the nominal specification, but whether the system can still maintain usable flow when several functions are triggered at the same time. In heavy equipment, this situation happens frequently during normal work cycles.
You will typically find this pump in mining machines, large construction equipment, and hydraulic stations where long working hours and repeated load changes are expected.
field note
In practice, this size is often introduced only when smaller units fail to keep pressure stable under overlapping actuator demand.
questions that usually come up during installation or maintenance
when multiple hydraulic functions run together, is pressure drop expected?
it depends more on system layout than the pump itself, especially valve matching and flow distribution.
it depends more on system layout than the pump itself, especially valve matching and flow distribution.
why is this model chosen instead of a smaller one?
because smaller pumps tend to struggle when demand overlaps across several actuators.
because smaller pumps tend to struggle when demand overlaps across several actuators.
is this pump limited to mining machinery?
no, it also appears in construction and industrial hydraulic stations with similar load behavior.
no, it also appears in construction and industrial hydraulic stations with similar load behavior.
what usually causes instability in real use?
most cases are related to system design rather than the pump itself.
most cases are related to system design rather than the pump itself.
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