A4VSO250DR/30L-PPB25N00 Open Circuit Axial Piston Variable Pump, DR Constant Pressure Control, Made in Germany
Price:
Negotiable
MOQ:
1
Delivery Time:
2 weeks
Brand:
Rexroth
Product Description
A4VSO250DR/30L-PPB25N00 Open Circuit Axial Piston Variable Pump, DR Constant Pressure Control, Made in Germany
Product Description
The Rexroth A4VSO250DR/30L-PPB25N00 is a genuine A4VSO series swashplate axial piston variable pump for open circuit hydraulic systems, manufactured in Germany. It features a nominal displacement of 250 cm³/r with DR (constant pressure / relief) control, rated for 350 bar continuous and 400 bar peak pressure. The DR control maintains a preset pressure level by reducing displacement toward zero once system pressure is reached, making it a reliable and cost-effective solution for press circuits, industrial power units, and general heavy-duty hydraulic applications.
Technical Specifications
| Manufacturer | Rexroth, Made in Germany |
|---|---|
| Series | A4VSO - Open Circuit Axial Piston Variable Pump |
| Model Code | A4VSO250DR/30L-PPB25N00 |
| Nominal Displacement (Vg max) | 250 cm³/r |
| Nominal Pressure | 350 bar |
| Peak Pressure | 400 bar |
| Maximum Speed (nnom) | Approx. 1500 rpm |
| Theoretical Flow @1500 rpm | Approx. 375 L/min |
| Drive Power @350 bar & 1500 rpm | Approx. 219 kW |
| Control Type | DR - Constant Pressure Control (Pressure Limiter / Relief Function) |
| Rotation | L - Left-hand (viewed from shaft end) |
| Mounting Flange & Ports | PPB25 - SAE Flange & SAE Port |
| Through Drive | N00 - Without Through Drive |
| Hydraulic Fluid | Mineral Oil HLP, HFC Water-Glycol Permissible (Derated) |
| Approximate Weight | 184 kg |
Key Features
- Swashplate design with infinitely variable displacement for on-demand flow
- DR constant pressure control — pump strokes to zero when set pressure is reached
- Rated 350 bar continuous / 400 bar peak for heavy industrial service
- Excellent suction characteristics and low noise operation
- Robust cast-iron housing with long-life heavy-duty bearings
- Compatible with variable speed drive (VSD) systems
- Through-drive option available on tandem-ready A4VSO250 variants
Typical Applications
- Hydraulic presses and stamping lines
- Industrial hydraulic power units (HPU)
- Metallurgy - rolling mill auxiliary hydraulics, furnace systems
- Test rigs and laboratory hydraulic benches
- General heavy industry requiring constant pressure supply
Sales Countries / Regions
Distributed globally through Rexroth's authorized dealer network, including:
- Europe: Germany, Italy, France, UK, Spain, Netherlands, Poland, etc.
- Asia: China, Japan, South Korea, India, Thailand, Malaysia, Vietnam, Indonesia, etc.
- Americas: USA, Canada, Mexico, Brazil
- Others: Australia, United Arab Emirates, Saudi Arabia, Turkey, South Africa
Frequently Asked Questions
Q1: What does "DR" control mean on this A4VSO pump?
A1: DR stands for Constant Pressure Control. The pump maintains a preset pressure by reducing its displacement toward zero once system pressure reaches the setpoint — functioning like a pressure-limiting / relief-controlled pump.
Q2: Can this pump be used in a closed circuit (hydrostatic transmission)?
A2: No. The A4VSO series is designed exclusively for open circuit (open loop) systems. For closed circuits, use the A4VG or A4VM series.
Q3: What should be done before first startup?
A3: Fill the pump housing with clean hydraulic oil through the case drain port to purge air before starting. Ensure the case drain line discharges above the tank oil level and verify motor rotation matches the specified left-hand (L) direction.
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Company
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
Location
Nan'an, Fujian Province, China
Contact Person
liyun