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A4VSO355EO1/30L-PPB25N00 Rexroth hydraulic pump, German made piston pump

China A4VSO355EO1/30L-PPB25N00 Rexroth hydraulic pump, German made piston pump

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A4VSO355EO1/30L-PPB25N00 Rexroth hydraulic pump, German made piston pump

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Mounting Flange	ISO 3019-2 (4-bolt, metric)
Supply Ability	100
Theoretical Flow @ 1500 rpm	~532 L/min
Weight (approx.)	~195 kg
Packaging Details	wooden box
Complete Model	A4VSO355EO1/30L-PPB25N00
Payment Terms	Western Union,T/T,D/P,D/A,L/C
Delivery Time	2 weeks
Peak Pressure (Intermittent)	400 bar
Model Number	A4VSO355EO1/30L-PPB25N00
Certification	ISO
Brand Name	Rexroth
Place of Origin	German

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Product Specification


Mounting Flange	ISO 3019-2 (4-bolt, metric)	Supply Ability	100
Theoretical Flow @ 1500 rpm	~532 L/min	Weight (approx.)	~195 kg
Packaging Details	wooden box	Complete Model	A4VSO355EO1/30L-PPB25N00
Payment Terms	Western Union,T/T,D/P,D/A,L/C	Delivery Time	2 weeks
Peak Pressure (Intermittent)	400 bar	Model Number	A4VSO355EO1/30L-PPB25N00
Certification	ISO	Brand Name	Rexroth
Place of Origin	German
High Light	Rexroth A4VSO355 hydraulic pump ，German made piston pump ，A4VSO355EO1 hydraulic pump with warranty

A4VSO355EO1/30L-PPB25N00 Rexroth Hydraulic Pump

German made axial piston pump with electro-hydraulic pressure/flow control

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)
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)
Compatible Fluids	Mineral oils (HL/HLP), HFC (Water Glycol with derating)
Weight (approx.)	~195 kg

Frequently Asked Questions

Q1: What does "EO1" control mean on an A4VSO pump?

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?

"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?

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?

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?

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?

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)?

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.

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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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