Bosch Rexroth A A4VSO 125 DR /30R-PPB13N00 axial piston variable pump

A A4VSO 125 DR /30R-PPB13N00, material number R910994306, is a factory-listed A4VSO axial piston variable pump for open-circuit hydraulic drives. Its swashplate changes displacement and therefore flow at a given drive speed. Its DR pressure controller destrokes the pump when outlet pressure reaches the command, supplying the flow required by the consumers. The factory pressure setting is not established by the published article identity.

The dated 2018-10 RE92050 series reference gives 350 bar nominal design pressure and 400 bar short-period pressure, with 1 second single periods and 300 hours cumulative exposure. These are base rotary-group catalog limits under the stated fluid and inlet conditions. The selected standard-size table gives 125 cm³/rev geometric displacement, 1800 rpm at maximum displacement and 225 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.

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 RE92050, edition 2018-10, 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.