Rexroth variable pump A4VSO series specifications
Specifications of Rexroth Variable Displacement Pump A4VSO Series
1. General Overview
The Rexroth A4VSO series is an axial piston variable displacement pump with a swashplate design, specifically developed for hydrostatic drives in open-circuit systems. Its flow rate is proportional to the drive speed and displacement, which can be continuously adjusted by modifying the swashplate angle. The series features excellent suction performance, low noise level, long service life, and a modular design, making it suitable for various industrial applications.
2. Key Technical Specifications
|
Model Size (Nominal Displacement)
|
Max Displacement (cm³/r)
|
Nominal Pressure (bar)
|
Max Pressure (bar)
|
Max Speed (rpm)
|
Max Flow Rate at Max Speed (L/min)
|
Max Power at Max Speed (kW)
|
Approx. Weight (kg)
|
|---|---|---|---|---|---|---|---|
|
A4VSO40
|
40
|
350
|
400
|
2600
|
104
|
61
|
—
|
|
A4VSO71
|
71
|
350
|
400
|
2200
|
156
|
91
|
53
|
|
A4VSO125
|
125
|
350
|
400
|
1800
|
225
|
131
|
88
|
|
A4VSO180
|
180
|
350
|
400
|
1800
|
324
|
189
|
102
|
|
A4VSO250
|
250
|
350
|
400
|
1500
|
375
|
219
|
184
|
|
A4VSO355
|
355
|
350
|
400
|
1500
|
532
|
310
|
207
|
|
A4VSO500
|
500
|
350
|
400
|
1320
|
660
|
385
|
320
|
|
A4VSO750
|
750
|
350
|
400
|
1000
|
750
|
525
|
460
|
|
A4VSO1000
|
1000
|
350
|
400
|
1000
|
1000
|
583
|
605
|
Note: The maximum pressure can reach 420 bar for selected control devices with port plate 36. All parameters are theoretical values without considering efficiency and tolerances, and values are rounded.
3. Control Modes
The A4VSO series offers a variety of control modes to meet different application requirements, including:
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DR: Pressure controller (one-sided swiveling)
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DP: Pressure controller for parallel operation
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FR: Flow controller
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DFR: Pressure and flow controller
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LR: Power controller with hyperbolic characteristic curve
-
MA: Manual control
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EM: Electric motor control
-
HM: Hydraulic control (volume-dependent)
-
EO: Analog electro-hydraulic control
-
HS: Digital electro-hydraulic pump control system
4. Applicable Hydraulic Fluids
The pump is suitable for the following hydraulic fluids:
-
Mineral oil and HFD hydraulic fluids (standard version, no code)
-
HFA, HFB, and HFC hydraulic fluids (special version with code “E” and sealing material NBR nitrile rubber and PTFE shaft seal)
5. Installation & Additional Features
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Installation Position: Any installation position is possible.
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Through Drive: Variable through drive options are available, and combination pumps (A4VSO + A4VSO) can be formed.
-
Swivel Angle Indicator: Equipped with an optical swivel angle indicator for easy monitoring.
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Suction Performance: Excellent suction characteristics ensure stable operation.
