Bosch Rexroth A A10V O 71 DR /31L-PSC62N00 axial piston variable pump

A A10V O 71 DR /31L-PSC62N00, material number R910963426, is a factory-listed A10VO axial piston variable pump for open-circuit hydraulic drives. Its swashplate changes displacement and therefore flow at a given drive speed. The pressure controller reduces displacement when outlet pressure reaches the commanded level, matching delivered flow to the consumers.

The dated 1995-11 manufacturer series reference gives 280 bar nominal pressure and permits 315 bar intermittent operation at 10% duty. It also cites 350 bar peak pressure, but does not establish an article-specific permissible peak duration; that peak figure is not presented as a delivered operating rating. The newer 2024 option key differs from this legacy execution and is not substituted for it. The selected standard-size table gives 71 cm³/rev geometric displacement, 2200 rpm at maximum displacement and 156 L/min theoretical flow at that speed. These catalog reference values require mineral-oil operation in the optimum 16–36 mm²/s viscosity range and compliance with inlet, shaft-load and drive-torque conditions; they are not universal assembly ratings. For size 71, the source requires the 1 in high-pressure port B mounting above 250 bar; the 1¼ in standard-pressure position is limited to 250 bar.

The exact material number and complete factory designation identify this execution. Delivered controller settings, displacement stops, optional equipment and any customized suffix require the binding factory documentation. The technical reference is manufacturer-authored RE92701, edition 1995-11, preserved from a distributor-hosted copy; its date is stated rather than presented as current article-specific approval.

The manufacturer series photograph is representative. Confirm the actual shaft, flange, port and control envelope before installation; the PDF selection preserves relevant complete source pages and distinguishes series geometry from customized delivery details.