Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
| Payment Terms | Western Union,T/T,D/P,D/A,L/C |
| Supply Ability | 100 |
| Delivery Time | 2 weeks |
| Packaging Details | wooden box |
| Shaft Type | Parallel Keyed Shaft (DIN 6885) |
| Mounting Flange | ISO 3019-2 / SAE 4-bolt |
| Nominal Size | NG 250 |
| Seal Material | FKM (Viton) |
| Full Model | A4VSO250EO2/30R-VPB25N00-SO368 |
| Brand Name | Rexroth |
| Model Number | R902445797 A4VSO250EO2/30R-VPB25N00-SO368 |
| Certification | ISO |
| Place of Origin | Germany |
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Product Specification
| Payment Terms | Western Union,T/T,D/P,D/A,L/C | Supply Ability | 100 |
| Delivery Time | 2 weeks | Packaging Details | wooden box |
| Shaft Type | Parallel Keyed Shaft (DIN 6885) | Mounting Flange | ISO 3019-2 / SAE 4-bolt |
| Nominal Size | NG 250 | Seal Material | FKM (Viton) |
| Full Model | A4VSO250EO2/30R-VPB25N00-SO368 | Brand Name | Rexroth |
| Model Number | R902445797 A4VSO250EO2/30R-VPB25N00-SO368 | Certification | ISO |
| Place of Origin | Germany | ||
| High Light | Rexroth axial variable piston pump ，A4VSO250EO2 piston pump Germany ，variable piston pump with warranty | ||
|
Parameter |
Specification |
|---|---|
|
Manufacturer / Series |
Rexroth A4VSO Series 30 (Industrial Heavy-Duty) |
|
Order Code |
R902445797 |
|
Full Model |
A4VSO250EO2/30R-VPB25N00-SO368 |
|
Pump Type |
Axial Piston Variable Pump (Swashplate Design, Open Circuit) |
|
Control Type |
EO2 (Electro-Proportional Displacement Control) |
|
Max. Displacement |
250 cm³/rev |
|
Nominal Pressure |
350 bar |
|
Peak Pressure |
400 bar (Intermittent) |
|
Nominal Size |
NG 250 |
|
Rotation Direction |
Right-hand (R, Clockwise, viewed from shaft end) |
|
Shaft Type |
Parallel Keyed Shaft (DIN 6885) |
|
Ports |
S (Suction), B (Pressure), L (Case Drain), X (Control) |
|
Port Size |
Code 25 (SAE Flange, Metric Threads) |
|
Mounting Flange |
ISO 3019-2 / SAE 4-bolt |
|
Max. Speed |
1500 rpm (at Vg max) |
|
Max. Flow |
~375 L/min (at 1500 rpm) |
|
Seal Material |
FKM (Viton) |
|
Hydraulic Fluid |
Mineral oils (HL, HLP), HFD (Synthetic), HFC (Water Glycol) |
|
Operating Temperature |
-20°C to +80°C |
|
Weight |
Approx. 184 kg |
|
Country of Origin |
Germany |
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Q1: What is the function of the "EO2" control? How does it differ from DRG?
A: The EO2 is an Electro-Proportional Control that allows for remote electronic adjustment of the pump's displacement. Unlike the mechanically or hydraulically controlled DR/DRG variants, the EO2 uses an external electrical signal (typically 0–10 V or 4–20 mA) to proportionally control the swashplate angle and thus the flow output. This makes it ideal for automated systems requiring precise speed control or integration with PLCs.
Q2: What does the "VPB25N00" suffix and "SO368" special code indicate?
A: This code defines the mechanical configuration and a special order option:
V: FKM (Viton) seals, offering superior chemical and high-temperature resistance.
P: Standard parallel key shaft (DIN 6885).
B25: Port size code 25 (SAE flange ports with metric threads, larger than the common B13).
N00: No through-drive (solid shaft end).
SO368: Special Option Code 368. This is a factory-specific configuration (e.g., specific sensor, paint, or documentation package) that does not change the core hydraulic performance.
Q3: What is the key application difference between this EO2 pump and the previous DRG models?
A: The primary difference is the control method and system integration:
EO2 (This model): Used in automated, closed-loop control systems. It requires an external electronic controller but offers precise, programmable flow matching and energy savings in complex machinery.
DRG (Previous models): Used in hydraulically controlled systems. It is adjusted by a pilot pressure signal and is simpler but less precise for electronic integration.
Both are A4VSO250 heavy-duty pumps but serve different automation levels.
Q4: What are the electrical requirements for the EO2 control?
A: The EO2 control typically requires:
Power Supply: 24 V DC for the proportional solenoid.
Control Signal: A analog input (e.g., 0–10 V, ±10 V, or 4–20 mA) to command the desired displacement.
Controller: It is highly recommended to use it with a compatible Rexroth amplifier card (e.g., VT-5000 series) or a PLC with a proportional output module for stable control.
Q5: Can this pump be used in a closed-loop hydrostatic system?
A: No. The A4VSO EO2 is designed exclusively for open-circuit applications (pump → valve → actuator → tank). For closed-loop hydrostatic transmissions (e.g., travel drives), you would need an A4VG or A2FM series unit.
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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