Aftermarket Replacement A10VO Series 31 pumps

A10VO Series 31 pumps

Series 31 is the classic all-purpose axial piston variable pump of the A10VO family. Swashplate design, open circuit — nominal pressure 280 bar, maximum 350 bar, covering sizes NG18 to NG100. It keeps the familiar DR / DFR / DFR1 control naming, offers the DFLR constant-power control, and the through drive allows adding a gear pump or an axial piston pump. Available pumps are new aftermarket replacements, quality checked before shipping.

Technical data — A10VO Series 31

Size (NG)18284571100
Displacement Vg max (cm³)18284571100
Nominal / max pressure280 bar nominal / 350 bar maximum
Max speed at Vg max (rpm)33003000260022002000
Flow at nnom (l/min)5984117156200
CircuitOpen circuit, swashplate design

Available controls

  • DR — pressure controller
  • DRG — pressure controller, remotely controlled
  • DFR / DFR1 / DRSC — pressure and flow controller (load-sensing; DFR1 with flushing, DRSC without)
  • DFLR — pressure, flow and power controller (constant power)
  • ED / ER — electrohydraulic pressure control
  • EC4 — electro-hydraulic control valve, positive control

What is Series 31 used for?

Series 31 suits general-purpose machines that need a dependable 280 bar variable pump. When the original pump carries /31 in its model code, it is the direct match — mounting, ports and the DR / DFR / DFR1 control naming follow the original, with no code translation needed. We also stock the NG140 /31R variant of this series.

Need help choosing the right pump? Send us your existing model code — we will confirm the correct configuration before you order. Contact us

A10VSO axial piston variable pumps, Series 31 — open circuit, nominal pressure 280 bar, maximum pressure 350 bar. New aftermarket replacements.

A10VO Series 31

A10VSO axial piston variable pumps, Series 31 — open circuit, nominal pressure 280 bar, maximum pressure 350 bar. New aftermarket replacements.

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