A4VSO125LR2/30L-PPB25N00 Rexroth A4VSO125 series German made piston pump
Price:
Negotiable
MOQ:
1
Delivery Time:
2 weeks
Brand:
Rexroth
Product Description
A4VSO125LR2/30L-PPB25N00 Rexroth A4VSO125 series German made piston pump
Product Introduction
The Rexroth A4VSO125LR2/30L-PPB25N00 is a genuine German-manufactured A4VSO series open-circuit axial piston variable pump, equipped with LR2 constant power (horsepower) limiting control. With a displacement of 125 cm³/r and PPB25 SAE flange & ports, the pump automatically reduces its displacement as system pressure rises so that the product of pressure × flow (input power) does not exceed a preset limit.
This feature is essential when the driving electric motor has a defined power ceiling -- the LR2 control prevents motor overload while maximizing available hydraulic output. It is widely used in heavy presses, extrusion lines, plant-wide hydraulic power units, and process industry systems. Rated for 350 bar continuous / 400 bar peak.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Rexroth, Made in Germany |
| Series | A4VSO - Open Circuit Swashplate Axial Piston Variable Pump |
| Model Code | A4VSO125LR2/30L-PPB25N00 |
| Geometric Displacement (Vg max) | 125 cm³/r |
| Nominal Pressure | 350 bar |
| Peak Pressure | 400 bar |
| Maximum Speed (nnom) | Approx. 1900-2000 rpm |
| Theoretical Flow @1500 rpm | Approx. 187.5 L/min |
| Theoretical Flow @1800 rpm | Approx. 225 L/min |
| Drive Power @350 bar & 1500 rpm | Approx. 109 kW |
| Control Type | LR2 - Constant Power (Horsepower) Limiting Control (displacement decreases as pressure increases to keep input power ≤ preset value) |
| Rotation | L - Left-hand (viewed from shaft end) |
| Flange & Port | PPB25 - SAE Flange & SAE Port (larger porting) |
| Through Drive | N00 - Without Through Drive (tandem-ready variants available on other A4VSO codes) |
| Hydraulic Fluid | Mineral Oil HLP, HFC Water-Glycol Permissible (Derated) |
| Approximate Weight | 75-78 kg |
Working ports 13 and 25, flat key splines p and z, seals p and v, control mode: drg
a4vso125drg/30r-ppb13n00 a4vso125drg/30r-ppb25n00
a4vso125drg/30r-pzb13n00 a4vso125drg/30r-pzb25n00
a4vso125drg/30r-vpb13n00 a4vso125drg/30r-vpb25n00
a4vso125drg/30r-vzb13n00 a4vso125drg/30r-vzb25n00
Working ports 13 and 25, flat key splines p and z, seals p and v, control mode: lr2
a4vso125lr2/30r-ppb13n00 a4vso125lr2/30r-ppb25n00
a4vso125lr2/30r-pzb13n00 a4vso125lr2/30r-pzb25n00
a4vso125lr2/30r-vpb13n00 a4vso125lr2/30r-vpb25n00
a4vso125lr2/30r-vzb13n00 a4vso125lr2/30r-vzb25n00
Working ports 13 and 25, flat key splines p and z, seals p and v, control mode: eo1
a4vso125eo1/30r-ppb13n00 a4vso125eo1/30r-ppb25n00
a4vso125eo1/30r-pzb13n00 a4vso125eo1/30r-pzb25n00
a4vso125eo1/30r-vpb13n00 a4vso125eo1/30r-vpb25n00
a4vso125eo1/30r-vzb13n00 a4vso125eo1/30r-vzb25n00
Working ports 13 and 25, flat key splines p and z, seals p and v, control mode: eo2
a4vso125eo2/30r-ppb13n00 a4vso125eo2/30r-ppb25n00
a4vso125eo2/30r-pzb13n00 a4vso125eo2/30r-pzb25n00
a4vso125eo2/30r-vpb13n00 a4vso125eo2/30r-vpb25n00
a4vso125eo2/30r-vzb13n00 a4vso125eo2/30r-vzb25n00
a4vso125drg/30r-pzb13n00 a4vso125drg/30r-pzb25n00
a4vso125drg/30r-vpb13n00 a4vso125drg/30r-vpb25n00
a4vso125drg/30r-vzb13n00 a4vso125drg/30r-vzb25n00
Working ports 13 and 25, flat key splines p and z, seals p and v, control mode: lr2
a4vso125lr2/30r-ppb13n00 a4vso125lr2/30r-ppb25n00
a4vso125lr2/30r-pzb13n00 a4vso125lr2/30r-pzb25n00
a4vso125lr2/30r-vpb13n00 a4vso125lr2/30r-vpb25n00
a4vso125lr2/30r-vzb13n00 a4vso125lr2/30r-vzb25n00
Working ports 13 and 25, flat key splines p and z, seals p and v, control mode: eo1
a4vso125eo1/30r-ppb13n00 a4vso125eo1/30r-ppb25n00
a4vso125eo1/30r-pzb13n00 a4vso125eo1/30r-pzb25n00
a4vso125eo1/30r-vpb13n00 a4vso125eo1/30r-vpb25n00
a4vso125eo1/30r-vzb13n00 a4vso125eo1/30r-vzb25n00
Working ports 13 and 25, flat key splines p and z, seals p and v, control mode: eo2
a4vso125eo2/30r-ppb13n00 a4vso125eo2/30r-ppb25n00
a4vso125eo2/30r-pzb13n00 a4vso125eo2/30r-pzb25n00
a4vso125eo2/30r-vpb13n00 a4vso125eo2/30r-vpb25n00
a4vso125eo2/30r-vzb13n00 a4vso125eo2/30r-vzb25n00
LR2 Constant Power Control - Why It Matters
Unlike DR (constant pressure) or DFR (pressure+flow pilot), LR2 protects your prime mover:
- Automatically de-strokes the pump as pressure rises to keep motor input power below a preset kW/hp limit
- Prevents electric motor overheating or tripping on overload during high-pressure stalls
- Allows full flow at low pressure and gradually reduces flow as pressure builds -- optimizing energy use
- Adjustable power setpoint via built-in spring (some variants pilot-influenced -- see LR2G for pilot option)
- Ideal for fixed-speed electric motor drives where motor rated power is the system bottleneck
➡ PPB25 SAE porting minimizes pressure drop in higher-flow piped hydraulic power units.
Typical Applications
- Heavy hydraulic presses (forging, extrusion, molding) with fixed-power electric drives
- Industrial hydraulic power units (HPU) in continuous-process plants
- Metal forming and stamping lines
- Large plastic injection molding machines (clamp/aux pump)
- Testing laboratories simulating load-limited hydraulic power sources
- General heavy industry requiring motor overload protection
Global Sales Countries / Regions
Distributed through Rexroth's authorized global dealer network, including:
- Europe: Germany, Italy, France, UK, Spain, Netherlands, Austria, Switzerland, Poland, Czech Republic, Sweden
- Asia-Pacific: China, Japan, South Korea, India, Taiwan, Thailand, Malaysia, Vietnam, Indonesia, Australia
- Americas: USA, Canada, Mexico, Brazil, Chile (industrial regions)
- Middle East & Africa: UAE, Saudi Arabia, Turkey, South Africa
Power setting procedure, commissioning support and lead time vary by region -- please contact your local authorized Rexroth distributor.
Frequently Asked Questions
Q1: What is the difference between LR2 and DR control on A4VSO pumps?
A1: DR maintains a constant pressure by destroking when set pressure is reached. LR2 limits input power (pressure × flow) -- the pump delivers full flow at low pressure and gradually reduces displacement as pressure rises, so motor load never exceeds the preset power limit.
Q2: Can LR2 prevent my electric motor from burning out?
A2: Yes, when correctly set. LR2 ensures the pump will not draw more power than the preset value, helping avoid motor overload during high-pressure hold or stall conditions -- provided the LR2 power setting matches your motor's rated capacity.
Q3: Is a pressure relief valve still required?
A3: Yes. A system pressure relief valve is still necessary as ultimate overpressure protection, even with LR2 control.
Q4: Can this pump be used in a closed-circuit hydrostatic transmission?
A4: No. The A4VSO series is for open circuit (open loop) only. For closed-loop track/wheel drives, use the A4VG or A4VM series.
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Company
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
Location
Nan'an, Fujian Province, China
Contact Person
liyun