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A4VSO355EO2/30L-PPB13N00 Rexroth Germany A4VSO355 piston pump

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A4VSO355EO2/30L-PPB13N00 Rexroth Germany A4VSO355 piston pump

Displacement (Geometric)​ : 355 cm³/rev​

Model Number : A4VSO355EO2/30L-PPB13N00

Maximum Speed (nₘₐₓ)​ : 1500 rpm​ @ Vg max (Size 355)

MOQ : 1

Packaging Details : wooden box

Supply Ability : 100

Control Type​ : EO2 — Electro-proportional displacement control with pilot pressure requirement​ (typically min. pilot pressure 50/100 bar for Size 355), pump swash angle proportional to electric command signal

Certification : ISO

Type​ : Swashplate-type axial piston variable pump (Open circuit)

Brand Name : Rexroth

Payment Terms : Western Union,T/T,D/P,D/A,L/C

Delivery Time : 2 weeks

Nominal Pressure​ : 350 bar (35 MPa)​ Continuous

Place of Origin : Germany

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A4VSO355EO2/30L-PPB13N00 Rexroth Germany A4VSO355 Piston Pump
Technical Specifications
ModelA4VSO355EO2/30L-PPB13N00
Brand / OriginRexroth / Germany (Brueninghaus Hydromatik design)
TypeSwashplate-type axial piston variable pump (Open circuit)
Displacement (Geometric)355 cm³/rev
Control TypeEO2 - Electro-proportional displacement control with pilot pressure requirement (typically min. pilot pressure 50/100 bar for Size 355), pump swash angle proportional to electric command signal
Nominal Pressure350 bar (35 MPa) Continuous
Peak / Maximum Pressure400 bar (40 MPa) Intermittent
Maximum Speed (nₘₐₓ)1500 rpm @ Vg max (Size 355)
Recommended Speed1000 - 1500 rpm
Theoretical Flow @ 1500 rpm≈ 533 L/min (Q = n × Vg / 1000)
Rotation DirectionL - Counter‑clockwise (viewed from shaft end)
Mounting FlangeISO 3019‑2 / Series 30, 4‑bolt (Code PP)
Through‑driveYes - PPB indicates through‑drive capable (N00 = no auxiliary pump fitted)
Port ConfigurationPPB13 - SAE flange side ports, pressure & tank ports 90° apart
Seal MaterialFKM (Fluoroelastomer / Viton, standard for mineral oil HLP)
Case DrainTwo case drain ports - must be routed to tank < 2 bar backpressure
Recommended Oil Viscosity16 - 100 mm²/s (optimal ISO VG 46 at operating temp)
Oil Cleanliness RequirementISO 4406 18/16/13 (NAS 1638 Class 8-9)
Net Weight (Approx.)≈ 207 kg (dry, excl. coupling)
Package / ConditionOriginal factory wooden crate, new unused
Salable / Supply RegionGlobal - Available via Rexroth authorized industrial hydraulics distributors (Europe, Americas, Asia-Pacific incl. China mainland)
A4VSO355EO2/30L-PPB13N00 Rexroth Germany A4VSO355 piston pump
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Model Code Breakdown
  • A4VSO - Axial piston variable pump, open circuit
  • 355 - Displacement 355 cm³/rev
  • EO2 - Electro‑proportional displacement control with higher pilot pressure requirement (vs EO1, typically min. 50/100 bar pilot pressure for Size 355, suitable for larger frames)
  • 30 - Design Series 30
  • L - Counter‑clockwise rotation (viewed from shaft end)
  • PPB13N00 - ISO flange with through-drive (PP), SAE side ports (B13), no auxiliary pump (N00)
Frequently Asked Questions (FAQ)
1. What is the difference between EO2 and EO1 control?
Both EO1 and EO2 are electro-proportional displacement controls - pump flow is proportional to the electric command signal via a proportional solenoid + LVDT position feedback. The key difference: EO2 requires a higher external pilot pressure (typically min. 50 bar, often 100 bar for Size 355) to operate the control spool, whereas EO1 can work with lower pilot pressure (≈20 bar, sizes 40-250). EO2 is the version specified for larger displacements (Size 250/355/500+) in the A4VSO Series 30. Always confirm pilot pressure source is available in your hydraulic power unit.
2. Can I mount a second pump on the back?
Yes. The PPB mounting code indicates through‑drive capability. You can flange-mount another A4VSO pump (same or smaller size) on the rear to form a tandem combination. N00 = no auxiliary gear pump pre-fitted on the through-drive shaft, but the through-drive shaft is present.
3. What are the critical installation points?
  • Case Drain (Leakage Line): Must connect directly to tank, backpressure ≤ 1.5-2 bar. Never tee into the main return.
  • Suction Line: Keep short & large-diameter; ensure absolute inlet pressure ≥ 0.8 bar to avoid cavitation. Use 100 µm suction strainer.
  • Pilot Pressure (EO2): Supply the EO2 pilot port with clean hydraulic oil at the required pilot pressure (≥ 50 bar, check nameplate - often 100 bar for Size 355).
  • Rotation Check: "L" = counter‑clockwise when viewed from shaft end - verify prime mover direction before coupling.
  • Bleed: Fill case and suction side with oil and vent before first start-up.
4. Does EO2 need a separate amplifier?
Yes. The pump has the proportional solenoid and LVDT onboard, but requires an external electronic amplifier (e.g. Rexroth VT 5035-1X or PLC analog output card) to supply the command signal (±10V / 4-20mA / PWM as specified) and 24V DC for the solenoid. The amplifier is ordered separately.
5. Is a system relief valve still required?
Yes, absolutely. EO2 controls displacement/flow only - it provides no pressure limiting function. You must install a properly sized system safety relief valve (e.g. DB type) in the pressure line.
6. What oil cleanliness is required?
Maintain hydraulic oil at ISO 4406 18/16/13 (NAS 1638 Class 8 -9) minimum, using a return-line filter with β₁₀ ≥ 200 (10 µm nominal). Contaminated oil is the leading cause of A4VSO pump failure.
7. What pilot pressure is needed for EO2 on Size 355?
For A4VSO Size 355 with EO2 control, the typical minimum pilot pressure is 50 bar, often specified as 100 bar depending on the exact sub-version. The pilot oil must be clean and sourced from the main system or a dedicated pilot pump. Lack of adequate pilot pressure will cause the EO2 controller to fail to stroke the swash plate.

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