A4VSO355DFR/30L-PPB13N00 German Rexroth Variable Axial Piston Pump A4VSO250
Price:
Negotiable
MOQ:
1
Delivery Time:
2 weeks
Brand:
Rexroth
Product Description
A4VSO355DFR/30L-PPB13N00 German Rexroth Variable Axial Piston Pump
Product Specifications
| Model | A4VSO355DFR/30L-PPB13N00 |
|---|---|
| Brand / Origin | Rexroth / Germany |
| Type | Swashplate-type axial piston variable pump (Open circuit) |
| Displacement (Vg max) | 355 cm³/rev |
| Control Type | DFR – Pressure & Flow Controller: maintains constant differential pressure across an external orifice (flow control by sensing Δp) and overlays a mechanically adjustable pressure limiting function |
| Nominal Pressure | 350 bar (35 MPa) Continuous |
| Peak / Maximum Pressure | 400 bar (40 MPa) Intermittent |
| Maximum Speed (nₘₐₓ) | 1500 rpm @ Vg max (Size 355) |
| Recommended Speed | 1000 - 1500 rpm |
| Theoretical Flow @ 1500 rpm | ≈ 533 L/min (Q = n × Vg / 1000) |
| Rotation Direction | L – Counter‑clockwise (viewed from shaft end) |
| Mounting Flange | ISO 3019‑2 / Series 30, 4‑bolt (Code PP) |
| Through‑drive | Yes – PPB indicates through‑drive capable (N00 = no auxiliary pump fitted) |
| Port Configuration | PPB13 – SAE flange side ports, pressure (B) & tank (S) ports 90° apart |
| Seal Material | FKM (Fluoroelastomer / Viton, standard for mineral oil HLP) |
| Case Drain | Two case drain ports – must be routed to tank < 2 bar backpressure |
| Recommended Oil Viscosity | 16 - 100 mm²/s (optimal ISO VG 46 at operating temp) |
| Oil Cleanliness Requirement | ISO 4406 18/16/13 (NAS 1638 Class 8-9) |
| Net Weight (Approx.) | ≈ 207 kg (dry, excl. coupling) |
| Package / Condition | Original factory wooden crate, new unused, German import |
| Salable / Supply Region | Global – Available via Rexroth authorized industrial hydraulics distributors |
Applicable Industries
- Heavy injection molding / die‑casting machines
- Metallurgy – rolling mill auxiliaries, forging press clamps
- Mining – centralized HPUs, crusher adjusters, roof‑support test rigs
- Oilfield – skid‑mounted well‑service HPUs, BOP test benches
- Marine – deck machinery open‑circuit power packs
- Industrial test benches
Model Code Breakdown
A4VSO – Axial piston variable pump, open circuit
355 – Displacement 355 cm³/rev
DFR – Pressure & Flow controller (flow held constant by Δp sensing across throttle orifice + pressure cut‑off adjustable mechanically)
30 – Design Series 30
L – Counter‑clockwise rotation (viewed from shaft end)
PPB13N00
- PP – Through‑drive capable, ISO 4‑bolt flange
- B13 – SAE flange side ports (P & T 90° apart)
- N00 – No auxiliary pump / no special option on through‑drive
Frequently Asked Questions
What does DFR (Pressure & Flow Controller) do?
DFR is a composite hydraulic controller:
- Flow Control: Maintains constant pump flow by sensing the pressure drop (Δp) across an external orifice/throttle
- Pressure Limiting: Overlays a mechanical pressure cut‑off – when system pressure reaches the set spring value, the pump strokes down
What is the difference between DFR and DFR1?
- DFR: Pilot oil port X is open (connected internally); standard version
- DFR1: Pilot oil port X is plugged / without orifice – used when the load‑sensing signal is supplied externally
Can I mount a second pump on the back?
Yes. The PPB code indicates through‑drive capability. An A4VSO (same or smaller) or gear pump can be flange‑mounted on the rear. N00 = no auxiliary pump pre‑fitted, through‑drive shaft is present.
What are critical installation points?
- Case Drain: Plumb directly to tank, backpressure ≤ 1.5-2 bar
- Suction Line: Keep short & large‑diameter; absolute inlet pressure ≥ 0.8 bar
- Pilot / Sensing Lines (DFR): Ensure pilot pressure is available and flow‑sensing orifice is correctly sized
- Rotation Check: "L" = counter‑clockwise from shaft end
- Bleed: Fill case and suction with oil, vent before first start‑up
Is a system relief valve still required with DFR?
Yes, strongly recommended. DFR provides pressure cut‑off under normal conditions but has finite response time. A system safety relief valve protects against spikes from thermal expansion or control lag.
What oil cleanliness is required?
Maintain ISO 4406 18/16/13 (NAS 1638 Class 8-9) minimum using a return‑line filter β₁₀ ≥ 200 (10 µm nominal). Contamination is the primary cause of A4VSO premature wear.
Is this the main pump for a wheel loader or excavator?
No. A4VSO is an industrial open‑circuit pump. Mobile wheel loaders/excavators typically use A4VG (closed) or A11VO (open axial) as travel/main pumps. A4VSO with DFR may be used in loader factory test benches, auxiliary stationary HPUs, or mine‑site industrial hydraulic stations.
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Company
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
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Nan'an, Fujian Province, China
Contact Person
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