Original Rexroth hydraulic pump imported from Germany with original factory packaging. This swashplate-type axial piston variable pump features electro-proportional displacement control for precise flow regulation.

Additional Rexroth plunger pump models with various configurations:

• A4VSO — Axial piston variable pump, open circuit
• 355 — Geometric displacement 355 cm³/rev
• EO1 — Electro-proportional displacement controller (electric setpoint → swash angle)
• 30 — Design Series 30
• L — Counter-clockwise rotation (viewed from drive shaft end)
• PPB13N00 — ISO flange w/ through-drive (PP), SAE side ports (B13), no auxiliary pump (N00)

EO1 controls the pump's swash plate angle proportionally to an electrical command signal (typically 0-10 V, ±10 V, or 4-20 mA via an external proportional amplifier). It varies the pump's output flow while the pump itself provides no pressure limiting. System pressure is determined by load; over-pressure protection must be provided by a separate relief valve (e.g., DB/DBW type).

Yes. The PPB code indicates through-drive capability — a secondary A4VSO pump (same or smaller frame) can be flange-mounted to the rear. The N00 suffix means no auxiliary gear pump is pre-fitted on the through-drive shaft, but the shaft itself is present and ready.

• Case Drain (L-port): Must be plumbed directly to tank with backpressure ≤ 1.5-2 bar (preferably gravity drain or lightly pressured). Never connect to the main return line.
• Suction Line: Keep short & large-diameter; inlet absolute pressure must be ≥ 0.8 bar to prevent cavitation. Install a 100 μm suction strainer.
• Rotation: Verify drive motor rotates counter-clockwise (L) when viewed from the shaft end — opposite rotation will damage the pump.
• Bleeding: Fill case and suction line with oil and vent before first start-up to purge air.

Yes. The pump has a proportional solenoid and position feedback LVDT onboard, but requires an external proportional amplifier card or PLC analog output module to supply the command signal and 24 V DC excitation. Wiring follows the standard Rexroth EO1 terminal diagram in data sheet RE 25702.

Yes, absolutely. EO1 controls flow/displacement only. You must install a correctly sized system safety relief valve in the pressure line to protect against over-pressure due to control faults, thermal expansion, or external load spikes.

Maintain hydraulic oil at ISO 4406 18/16/13 (NAS 1638 Class 8-9) minimum, using a return-line filter with β₁₀ ≥ 200. Particle contamination is the primary cause of premature A4VSO pump wear.

As a standard Rexroth industrial catalog item, this model is regularly stocked by major Rexroth distribution hubs in Europe and Asia. Lead time is typically ex-stock to 6-10 weeks depending on region and order volume. Units are shipped in original Rexroth wooden crates with serial number label and test certificate (upon request).