Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
| Packaging Details | wooden box |
| Supply Ability | 100 |
| Theoretical Flow @ 1500 rpm | ~532 L/min |
| Complete Model | A4VSO355EO1/30L-PPB25N00 |
| Payment Terms | Western Union,T/T,D/P,D/A,L/C |
| Peak Pressure (Intermittent) | 400 bar |
| Weight (approx.) | ~195 kg |
| Delivery Time | 2 weeks |
| Mounting Flange | ISO 3019-2 (4-bolt, metric) |
| Model Number | A4VSO355EO1/30L-PPB25N00 |
| Brand Name | Rexroth |
| Certification | ISO |
| Place of Origin | German |
View Detail Information
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Product Specification
| Packaging Details | wooden box | Supply Ability | 100 |
| Theoretical Flow @ 1500 rpm | ~532 L/min | Complete Model | A4VSO355EO1/30L-PPB25N00 |
| Payment Terms | Western Union,T/T,D/P,D/A,L/C | Peak Pressure (Intermittent) | 400 bar |
| Weight (approx.) | ~195 kg | Delivery Time | 2 weeks |
| Mounting Flange | ISO 3019-2 (4-bolt, metric) | Model Number | A4VSO355EO1/30L-PPB25N00 |
| Brand Name | Rexroth | Certification | ISO |
| Place of Origin | German |
|
Parameter Category |
Parameter |
Specification / Description |
|---|---|---|
|
General Information |
Manufacturer / Model |
Rexroth (Germany), A4VSO Series |
|
Complete Model |
A4VSO355EO1/30L-PPB25N00 |
|
|
Pump Type |
Swashplate Axial Piston Pump, Open Circuit |
|
|
Hydraulic Performance |
Nominal Displacement |
355 cm³/rev |
|
Nominal Pressure (Continuous) |
350 bar |
|
|
Peak Pressure (Intermittent) |
400 bar |
|
|
Recommended Speed |
1000 – 1500 rpm (Max ~1800 rpm subject to inlet conditions) |
|
|
Theoretical Flow @ 1500 rpm |
~532 L/min |
|
|
Control Type |
EO1 — Electro-Hydraulic Pressure / Flow Control (External Pilot Pressure Dependent, typically for remote LS or electronic interface via separate amplifier) |
|
|
Mechanical Interface |
Shaft Type |
Parallel Key Shaft (DIN 6885) |
|
Rotation Direction |
Counter-Clockwise (L) — viewed from shaft end |
|
|
Mounting Flange |
ISO 3019-2 (4-bolt, metric) |
|
|
Port Configuration |
PPB25: SAE flanged ports, metric screws, 25 series port plate |
|
|
Through Drive |
N00: No through-drive capability |
|
|
Sealing & Media |
Seal Material |
NBR (Standard, code P implied) |
|
Compatible Fluids |
Mineral oils (HL/HLP), HFC (Water Glycol with derating) |
|
|
Weight (approx.) |
~195 kg |
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Q1: What does "EO1" control mean on an A4VSO pump?
A: EO1 is an electro-hydraulic control version — typically a load-sensing / pressure-limiting control that accepts an external pilot pressure signal (and optionally an electrical command via a separate proportional valve or Rexroth RC/VT type controller). Unlike DFR (built-in spring-controlled LS), EO1 relies on an external pilot circuit to define the pump's displacement demand. The exact function (LS-only, LS+DR, remote pressure) depends on the pilot valve/block used with it.
Q2: The rotation code is "L" (30L) — what does that mean practically?
A: "L" = Counter-Clockwise when viewed from the drive shaft end. This is the opposite of the more common "R" (Clockwise). The pump must be driven in this direction — running it in reverse will cause immediate failure due to loss of lubrication and improper suction. Always verify your prime mover / coupling rotates counter-clockwise from the shaft side.
Q3: What are the suction (inlet) requirements for this large displacement pump?
A: With a 355 cc displacement, proper inlet conditions are critical:
At 1500 rpm, inlet absolute pressure should be ≥ 0.8–1.0 bar (supercharge preferred for sustained high speed).
For speeds >1500 rpm, a boost pump is strongly recommended to prevent cavitation.
Keep inlet line short, generously sized, and avoid restrictions. Use a 149 µm (100 mesh) suction strainer.
Q4: Can I mount an auxiliary pump (gear pump) on the rear?
A: No. The suffix N00 indicates no through-drive shaft. The rear of the pump housing is blanked. If you need a through-drive for a charge / pilot gear pump, select a version with a through-drive code such as K01, K02, etc.
Q5: How should the case drain (L port) be handled?
A: Connect one case drain port directly to the tank with a dedicated line — zero backpressure (max 0.5 bar). The second drain port must be plugged. The case drain line should be positioned above the tank oil level or looped to prevent air ingestion. A blocked drain = shaft seal failure.
Q6: What drive motor power is required?
A: At 1500 rpm, 350 bar, and 355 cc:
Theoretical hydraulic power ≈ (355 × 10⁻⁶ × 350 × 1500) / 600 ≈ 310 kW
Including mechanical losses (~90%), input power ≈ 345 kW
Recommend a 355 kW (≈475 HP) prime mover with adequate starting torque reserve for 400 bar peak conditions.
Q7: Is the standard NBR seal okay for water glycol (HFC) or phosphate ester (HFD)?
A: Standard NBR is compatible with HFC (water glycol) with pressure/temp derating. It is NOT compatible with HFD (phosphate ester) — for HFD you need FKM (Viton) seals, which would be a custom order (typically with /V suffix on the shorter code). Confirm with Rexroth if your fluid is not mineral oil.
Company Details
Business Type:
Manufacturer,Exporter
Total Annual:
1 million-10 millon
Employee Number:
>50
Ecer Certification：
Verified Supplier
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...
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